./Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/loop-lit/gj2007b_true-unreach-call_true-termination.c.i --full-output --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-lit/gj2007b_true-unreach-call_true-termination.c.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 1e17546c38a51643b6e392ce04436e766214299e ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0210da8 [2018-10-21 12:38:08,480 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-21 12:38:08,483 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-21 12:38:08,495 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-21 12:38:08,495 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-21 12:38:08,496 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-21 12:38:08,498 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-21 12:38:08,500 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-21 12:38:08,502 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-21 12:38:08,502 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-21 12:38:08,504 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-21 12:38:08,504 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-21 12:38:08,505 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-21 12:38:08,506 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-21 12:38:08,508 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-21 12:38:08,509 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-21 12:38:08,509 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-21 12:38:08,512 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-21 12:38:08,514 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-21 12:38:08,515 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-21 12:38:08,516 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-21 12:38:08,518 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-21 12:38:08,521 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-21 12:38:08,521 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-21 12:38:08,521 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-21 12:38:08,523 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-21 12:38:08,524 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-21 12:38:08,524 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-21 12:38:08,525 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-21 12:38:08,527 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-21 12:38:08,527 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-21 12:38:08,528 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-21 12:38:08,528 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-21 12:38:08,528 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-21 12:38:08,530 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-21 12:38:08,531 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-21 12:38:08,531 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-21 12:38:08,546 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-21 12:38:08,547 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-21 12:38:08,547 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-21 12:38:08,547 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-21 12:38:08,548 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-21 12:38:08,548 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-21 12:38:08,549 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-21 12:38:08,549 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-21 12:38:08,549 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-21 12:38:08,549 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-21 12:38:08,549 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-21 12:38:08,550 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-21 12:38:08,550 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-21 12:38:08,550 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-21 12:38:08,550 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-21 12:38:08,550 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-21 12:38:08,551 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-21 12:38:08,552 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-21 12:38:08,552 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-21 12:38:08,552 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-21 12:38:08,552 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-21 12:38:08,553 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-21 12:38:08,553 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-21 12:38:08,553 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-21 12:38:08,553 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-21 12:38:08,553 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-21 12:38:08,554 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-21 12:38:08,555 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-21 12:38:08,555 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-21 12:38:08,555 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-21 12:38:08,555 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-21 12:38:08,556 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-21 12:38:08,556 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-21 12:38:08,556 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-21 12:38:08,556 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 -> 1e17546c38a51643b6e392ce04436e766214299e [2018-10-21 12:38:08,606 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-21 12:38:08,619 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-21 12:38:08,622 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-21 12:38:08,624 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-21 12:38:08,624 INFO L276 PluginConnector]: CDTParser initialized [2018-10-21 12:38:08,625 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-lit/gj2007b_true-unreach-call_true-termination.c.i [2018-10-21 12:38:08,682 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9e678ea39/d25662af8ad84b978f6bec504567066e/FLAG42728bcbd [2018-10-21 12:38:09,131 INFO L298 CDTParser]: Found 1 translation units. [2018-10-21 12:38:09,132 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007b_true-unreach-call_true-termination.c.i [2018-10-21 12:38:09,139 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9e678ea39/d25662af8ad84b978f6bec504567066e/FLAG42728bcbd [2018-10-21 12:38:09,153 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9e678ea39/d25662af8ad84b978f6bec504567066e [2018-10-21 12:38:09,159 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-21 12:38:09,160 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-21 12:38:09,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-21 12:38:09,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-21 12:38:09,165 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-21 12:38:09,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 12:38:09" (1/1) ... [2018-10-21 12:38:09,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17a25db9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:38:09, skipping insertion in model container [2018-10-21 12:38:09,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 12:38:09" (1/1) ... [2018-10-21 12:38:09,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-21 12:38:09,200 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-21 12:38:09,378 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-21 12:38:09,382 INFO L189 MainTranslator]: Completed pre-run [2018-10-21 12:38:09,400 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-21 12:38:09,417 INFO L193 MainTranslator]: Completed translation [2018-10-21 12:38:09,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:38:09 WrapperNode [2018-10-21 12:38:09,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-21 12:38:09,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-21 12:38:09,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-21 12:38:09,418 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-21 12:38:09,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:38:09" (1/1) ... [2018-10-21 12:38:09,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:38:09" (1/1) ... [2018-10-21 12:38:09,440 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-21 12:38:09,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-21 12:38:09,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-21 12:38:09,441 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-21 12:38:09,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:38:09" (1/1) ... [2018-10-21 12:38:09,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:38:09" (1/1) ... [2018-10-21 12:38:09,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:38:09" (1/1) ... [2018-10-21 12:38:09,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:38:09" (1/1) ... [2018-10-21 12:38:09,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:38:09" (1/1) ... [2018-10-21 12:38:09,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:38:09" (1/1) ... [2018-10-21 12:38:09,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:38:09" (1/1) ... [2018-10-21 12:38:09,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-21 12:38:09,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-21 12:38:09,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-21 12:38:09,466 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-21 12:38:09,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:38:09" (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 [2018-10-21 12:38:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-21 12:38:09,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-21 12:38:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-21 12:38:09,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-21 12:38:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-21 12:38:09,548 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-21 12:38:09,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-21 12:38:09,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-21 12:38:09,934 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-21 12:38:09,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 12:38:09 BoogieIcfgContainer [2018-10-21 12:38:09,935 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-21 12:38:09,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-21 12:38:09,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-21 12:38:09,942 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-21 12:38:09,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 12:38:09" (1/3) ... [2018-10-21 12:38:09,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29087117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 12:38:09, skipping insertion in model container [2018-10-21 12:38:09,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:38:09" (2/3) ... [2018-10-21 12:38:09,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29087117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 12:38:09, skipping insertion in model container [2018-10-21 12:38:09,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 12:38:09" (3/3) ... [2018-10-21 12:38:09,948 INFO L112 eAbstractionObserver]: Analyzing ICFG gj2007b_true-unreach-call_true-termination.c.i [2018-10-21 12:38:09,967 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-21 12:38:09,988 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-21 12:38:10,024 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-21 12:38:10,079 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-21 12:38:10,079 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-21 12:38:10,080 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-21 12:38:10,080 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-21 12:38:10,080 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-21 12:38:10,080 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-21 12:38:10,080 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-21 12:38:10,080 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-21 12:38:10,080 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-21 12:38:10,103 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-10-21 12:38:10,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-21 12:38:10,109 INFO L367 BasicCegarLoop]: Found error trace [2018-10-21 12:38:10,110 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-21 12:38:10,112 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-21 12:38:10,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:38:10,118 INFO L82 PathProgramCache]: Analyzing trace with hash 425736256, now seen corresponding path program 1 times [2018-10-21 12:38:10,121 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-21 12:38:10,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:38:10,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-21 12:38:10,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:38:10,173 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-21 12:38:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-21 12:38:10,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-21 12:38:10,238 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-21 12:38:10,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-21 12:38:10,238 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-21 12:38:10,242 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-21 12:38:10,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-21 12:38:10,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-21 12:38:10,261 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2018-10-21 12:38:10,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-21 12:38:10,285 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2018-10-21 12:38:10,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-21 12:38:10,286 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-10-21 12:38:10,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-21 12:38:10,299 INFO L225 Difference]: With dead ends: 35 [2018-10-21 12:38:10,299 INFO L226 Difference]: Without dead ends: 17 [2018-10-21 12:38:10,302 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 [2018-10-21 12:38:10,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-21 12:38:10,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-21 12:38:10,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-21 12:38:10,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2018-10-21 12:38:10,345 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10 [2018-10-21 12:38:10,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-21 12:38:10,345 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-10-21 12:38:10,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-21 12:38:10,346 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2018-10-21 12:38:10,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-21 12:38:10,346 INFO L367 BasicCegarLoop]: Found error trace [2018-10-21 12:38:10,347 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-21 12:38:10,347 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-21 12:38:10,347 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:38:10,347 INFO L82 PathProgramCache]: Analyzing trace with hash -145623935, now seen corresponding path program 1 times [2018-10-21 12:38:10,348 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-21 12:38:10,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:38:10,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-21 12:38:10,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:38:10,349 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-21 12:38:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-21 12:38:10,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-21 12:38:10,460 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-21 12:38:10,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-21 12:38:10,460 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-21 12:38:10,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-21 12:38:10,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-21 12:38:10,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-21 12:38:10,463 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 5 states. [2018-10-21 12:38:10,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-21 12:38:10,606 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2018-10-21 12:38:10,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-21 12:38:10,607 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-10-21 12:38:10,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-21 12:38:10,609 INFO L225 Difference]: With dead ends: 29 [2018-10-21 12:38:10,609 INFO L226 Difference]: Without dead ends: 27 [2018-10-21 12:38:10,610 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-21 12:38:10,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-21 12:38:10,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2018-10-21 12:38:10,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-21 12:38:10,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-10-21 12:38:10,624 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 11 [2018-10-21 12:38:10,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-21 12:38:10,624 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-10-21 12:38:10,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-21 12:38:10,624 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-10-21 12:38:10,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-21 12:38:10,627 INFO L367 BasicCegarLoop]: Found error trace [2018-10-21 12:38:10,627 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-21 12:38:10,627 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-21 12:38:10,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:38:10,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1098814237, now seen corresponding path program 1 times [2018-10-21 12:38:10,629 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-21 12:38:10,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:38:10,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-21 12:38:10,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:38:10,630 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-21 12:38:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-21 12:38:10,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-21 12:38:10,796 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-21 12:38:10,796 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-21 12:38:10,797 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-10-21 12:38:10,800 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [29], [32], [34], [37], [39], [40], [41], [42], [44], [45], [46] [2018-10-21 12:38:10,854 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-21 12:38:10,854 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-21 12:38:10,995 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-21 12:38:10,997 INFO L272 AbstractInterpreter]: Visited 14 different actions 18 times. Never merged. Never widened. Never found a fixpoint. Largest state had 4 variables. [2018-10-21 12:38:11,018 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:38:11,018 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-21 12:38:11,100 INFO L232 lantSequenceWeakener]: Weakened 6 states. On average, predicates are now at 61.11% of their original sizes. [2018-10-21 12:38:11,101 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-21 12:38:11,296 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-21 12:38:11,297 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-21 12:38:11,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-10-21 12:38:11,298 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-21 12:38:11,298 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-21 12:38:11,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-21 12:38:11,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-21 12:38:11,302 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 6 states. [2018-10-21 12:38:11,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-21 12:38:11,780 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2018-10-21 12:38:11,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-21 12:38:11,781 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2018-10-21 12:38:11,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-21 12:38:11,784 INFO L225 Difference]: With dead ends: 43 [2018-10-21 12:38:11,784 INFO L226 Difference]: Without dead ends: 31 [2018-10-21 12:38:11,785 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-21 12:38:11,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-21 12:38:11,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2018-10-21 12:38:11,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-21 12:38:11,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2018-10-21 12:38:11,792 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2018-10-21 12:38:11,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-21 12:38:11,793 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2018-10-21 12:38:11,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-21 12:38:11,793 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2018-10-21 12:38:11,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-21 12:38:11,794 INFO L367 BasicCegarLoop]: Found error trace [2018-10-21 12:38:11,794 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-21 12:38:11,795 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-21 12:38:11,795 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:38:11,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1093455445, now seen corresponding path program 1 times [2018-10-21 12:38:11,795 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-21 12:38:11,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:38:11,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-21 12:38:11,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:38:11,797 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-21 12:38:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-21 12:38:12,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-21 12:38:12,107 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-21 12:38:12,107 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-21 12:38:12,107 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-10-21 12:38:12,108 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [14], [17], [21], [29], [32], [34], [40], [41], [42], [44] [2018-10-21 12:38:12,110 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-21 12:38:12,110 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-21 12:38:12,230 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-21 12:38:12,230 INFO L272 AbstractInterpreter]: Visited 13 different actions 77 times. Merged at 5 different actions 40 times. Widened at 1 different actions 4 times. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2018-10-21 12:38:12,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:38:12,264 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-21 12:38:12,320 INFO L232 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 35% of their original sizes. [2018-10-21 12:38:12,320 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-21 12:38:12,549 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-21 12:38:12,549 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-21 12:38:12,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-10-21 12:38:12,550 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-21 12:38:12,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-21 12:38:12,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-21 12:38:12,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-21 12:38:12,552 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 9 states. [2018-10-21 12:38:13,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-21 12:38:13,211 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2018-10-21 12:38:13,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-21 12:38:13,212 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-10-21 12:38:13,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-21 12:38:13,213 INFO L225 Difference]: With dead ends: 43 [2018-10-21 12:38:13,214 INFO L226 Difference]: Without dead ends: 41 [2018-10-21 12:38:13,216 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-10-21 12:38:13,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-21 12:38:13,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2018-10-21 12:38:13,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-21 12:38:13,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2018-10-21 12:38:13,230 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 15 [2018-10-21 12:38:13,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-21 12:38:13,231 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2018-10-21 12:38:13,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-21 12:38:13,231 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2018-10-21 12:38:13,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-21 12:38:13,234 INFO L367 BasicCegarLoop]: Found error trace [2018-10-21 12:38:13,235 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-21 12:38:13,235 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-21 12:38:13,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:38:13,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1642528819, now seen corresponding path program 1 times [2018-10-21 12:38:13,235 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-21 12:38:13,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:38:13,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-21 12:38:13,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:38:13,238 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-21 12:38:13,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-21 12:38:13,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-21 12:38:13,641 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-21 12:38:13,642 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-21 12:38:13,642 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-10-21 12:38:13,643 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [14], [17], [21], [29], [32], [34], [37], [39], [40], [41], [42], [44], [45], [46] [2018-10-21 12:38:13,645 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-21 12:38:13,645 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-21 12:38:13,772 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-21 12:38:13,773 INFO L272 AbstractInterpreter]: Visited 18 different actions 155 times. Merged at 6 different actions 48 times. Widened at 1 different actions 4 times. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2018-10-21 12:38:13,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:38:13,790 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-21 12:38:13,790 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-21 12:38:13,790 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-21 12:38:13,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-21 12:38:13,802 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-21 12:38:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-21 12:38:13,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-21 12:38:14,003 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-21 12:38:14,003 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-21 12:38:14,518 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-21 12:38:14,539 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-21 12:38:14,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 9] total 15 [2018-10-21 12:38:14,539 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-21 12:38:14,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-21 12:38:14,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-21 12:38:14,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-10-21 12:38:14,541 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 6 states. [2018-10-21 12:38:14,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-21 12:38:14,669 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2018-10-21 12:38:14,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-21 12:38:14,670 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-10-21 12:38:14,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-21 12:38:14,672 INFO L225 Difference]: With dead ends: 39 [2018-10-21 12:38:14,672 INFO L226 Difference]: Without dead ends: 25 [2018-10-21 12:38:14,673 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2018-10-21 12:38:14,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-21 12:38:14,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-21 12:38:14,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-21 12:38:14,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2018-10-21 12:38:14,679 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 20 [2018-10-21 12:38:14,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-21 12:38:14,680 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2018-10-21 12:38:14,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-21 12:38:14,680 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2018-10-21 12:38:14,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-21 12:38:14,681 INFO L367 BasicCegarLoop]: Found error trace [2018-10-21 12:38:14,681 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-21 12:38:14,681 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-21 12:38:14,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:38:14,682 INFO L82 PathProgramCache]: Analyzing trace with hash 192947091, now seen corresponding path program 1 times [2018-10-21 12:38:14,682 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-21 12:38:14,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:38:14,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-21 12:38:14,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:38:14,690 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-21 12:38:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-21 12:38:14,755 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-21 12:38:14,756 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-21 12:38:14,756 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-21 12:38:14,756 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-10-21 12:38:14,756 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [14], [17], [19], [21], [29], [32], [34], [40], [41], [42], [44] [2018-10-21 12:38:14,758 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-21 12:38:14,758 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-21 12:38:14,861 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-21 12:38:14,861 INFO L272 AbstractInterpreter]: Visited 14 different actions 118 times. Merged at 6 different actions 60 times. Widened at 1 different actions 5 times. Found 13 fixpoints after 3 different actions. Largest state had 5 variables. [2018-10-21 12:38:14,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:38:14,887 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-21 12:38:14,912 INFO L232 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 35% of their original sizes. [2018-10-21 12:38:14,913 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-21 12:38:15,302 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-21 12:38:15,302 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-21 12:38:15,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-10-21 12:38:15,303 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-21 12:38:15,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-21 12:38:15,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-21 12:38:15,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-10-21 12:38:15,304 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 10 states. [2018-10-21 12:38:15,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-21 12:38:15,687 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2018-10-21 12:38:15,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-21 12:38:15,687 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2018-10-21 12:38:15,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-21 12:38:15,689 INFO L225 Difference]: With dead ends: 25 [2018-10-21 12:38:15,689 INFO L226 Difference]: Without dead ends: 0 [2018-10-21 12:38:15,690 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-10-21 12:38:15,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-21 12:38:15,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-21 12:38:15,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-21 12:38:15,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-21 12:38:15,693 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2018-10-21 12:38:15,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-21 12:38:15,693 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-21 12:38:15,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-21 12:38:15,693 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-21 12:38:15,693 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-21 12:38:15,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-21 12:38:16,059 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-21 12:38:16,059 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-21 12:38:16,059 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-21 12:38:16,059 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-21 12:38:16,059 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-21 12:38:16,059 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-21 12:38:16,060 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 23) the Hoare annotation is: true [2018-10-21 12:38:16,060 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 23) no Hoare annotation was computed. [2018-10-21 12:38:16,060 INFO L425 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-10-21 12:38:16,060 INFO L421 ceAbstractionStarter]: At program point L20(line 20) the Hoare annotation is: (or (<= main_~n~0 0) (< main_~m~0 main_~n~0)) [2018-10-21 12:38:16,060 INFO L425 ceAbstractionStarter]: For program point L15(lines 15 17) no Hoare annotation was computed. [2018-10-21 12:38:16,060 INFO L425 ceAbstractionStarter]: For program point L14-1(lines 14 19) no Hoare annotation was computed. [2018-10-21 12:38:16,060 INFO L425 ceAbstractionStarter]: For program point L15-2(lines 15 17) no Hoare annotation was computed. [2018-10-21 12:38:16,060 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 23) no Hoare annotation was computed. [2018-10-21 12:38:16,061 INFO L421 ceAbstractionStarter]: At program point L14-3(lines 14 19) the Hoare annotation is: (and (<= main_~x~0 (+ main_~n~0 2147483648)) (or (<= main_~n~0 0) (< main_~m~0 main_~n~0)) (<= 0 (* 2 main_~m~0)) (<= (* 2 main_~n~0) 4294967294) (<= (* 2 main_~x~0) 4294967294) (<= main_~m~0 main_~x~0)) [2018-10-21 12:38:16,061 INFO L421 ceAbstractionStarter]: At program point L14-4(lines 14 19) the Hoare annotation is: (and (<= 0 main_~m~0) (or (<= main_~n~0 0) (< main_~m~0 main_~n~0))) [2018-10-21 12:38:16,061 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-21 12:38:16,061 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-21 12:38:16,061 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-21 12:38:16,061 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-21 12:38:16,062 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-21 12:38:16,062 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-21 12:38:16,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 12:38:16 BoogieIcfgContainer [2018-10-21 12:38:16,073 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-21 12:38:16,073 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-21 12:38:16,073 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-21 12:38:16,073 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-21 12:38:16,074 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 12:38:09" (3/4) ... [2018-10-21 12:38:16,077 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-21 12:38:16,081 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-21 12:38:16,082 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-21 12:38:16,082 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-10-21 12:38:16,085 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-10-21 12:38:16,085 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-10-21 12:38:16,086 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-21 12:38:16,130 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/witness.graphml [2018-10-21 12:38:16,130 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-21 12:38:16,131 INFO L168 Benchmark]: Toolchain (without parser) took 6971.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 171.4 MB). Free memory was 951.9 MB in the beginning and 844.4 MB in the end (delta: 107.5 MB). Peak memory consumption was 278.9 MB. Max. memory is 11.5 GB. [2018-10-21 12:38:16,132 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-10-21 12:38:16,133 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.13 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-21 12:38:16,134 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.97 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-21 12:38:16,134 INFO L168 Benchmark]: Boogie Preprocessor took 24.85 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-21 12:38:16,135 INFO L168 Benchmark]: RCFGBuilder took 469.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 171.4 MB). Free memory was 941.1 MB in the beginning and 1.2 GB in the end (delta: -213.3 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2018-10-21 12:38:16,135 INFO L168 Benchmark]: TraceAbstraction took 6136.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 844.4 MB in the end (delta: 310.0 MB). Peak memory consumption was 310.0 MB. Max. memory is 11.5 GB. [2018-10-21 12:38:16,137 INFO L168 Benchmark]: Witness Printer took 56.91 ms. Allocated memory is still 1.2 GB. Free memory is still 844.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-21 12:38:16,141 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 256.13 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 941.1 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 21.97 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.85 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 469.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 171.4 MB). Free memory was 941.1 MB in the beginning and 1.2 GB in the end (delta: -213.3 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6136.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 844.4 MB in the end (delta: 310.0 MB). Peak memory consumption was 310.0 MB. Max. memory is 11.5 GB. * Witness Printer took 56.91 ms. Allocated memory is still 1.2 GB. Free memory is still 844.4 MB. There was no memory consumed. 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: 14]: Loop Invariant Derived loop invariant: ((((x <= n + 2147483648 && (n <= 0 || m < n)) && 0 <= 2 * m) && 2 * n <= 4294967294) && 2 * x <= 4294967294) && m <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. SAFE Result, 5.9s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 1.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 90 SDtfs, 36 SDslu, 245 SDs, 0 SdLazy, 77 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 114 GetRequests, 66 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.6s AbstIntTime, 4 AbstIntIterations, 3 AbstIntStrong, 0.9297872340425533 AbsIntWeakeningRatio, 0.40425531914893614 AbsIntAvgWeakeningVarsNumRemoved, 3.1914893617021276 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 22 NumberOfFragments, 54 HoareAnnotationTreeSize, 14 FomulaSimplifications, 358 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 524 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 123 ConstructedInterpolants, 0 QuantifiedInterpolants, 6363 SizeOfPredicates, 4 NumberOfNonLiveVariables, 47 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 10/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...