./Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/loop-invgen/large_const_true-unreach-call_true-termination.i --full-output --rcfgbuilder.size.of.a.code.block LoopFreeBlock --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-invgen/large_const_true-unreach-call_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 b03e1cb325e2c3a8ef30197a8e07012b3a728d97 --rcfgbuilder.size.of.a.code.block LoopFreeBlock ........................................................................................................................................................................................................................................................................................................................................................................................................................... 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 10:17:12,512 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 10:17:12,514 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 10:17:12,528 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 10:17:12,528 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 10:17:12,529 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 10:17:12,530 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 10:17:12,532 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 10:17:12,533 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 10:17:12,534 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 10:17:12,537 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 10:17:12,537 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 10:17:12,538 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 10:17:12,539 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 10:17:12,540 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 10:17:12,541 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 10:17:12,543 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 10:17:12,545 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 10:17:12,550 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 10:17:12,551 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 10:17:12,556 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 10:17:12,558 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 10:17:12,560 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-22 10:17:12,560 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-22 10:17:12,561 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-22 10:17:12,561 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-22 10:17:12,562 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-22 10:17:12,563 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-22 10:17:12,564 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-22 10:17:12,565 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-22 10:17:12,565 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-22 10:17:12,565 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-22 10:17:12,566 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-22 10:17:12,566 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-22 10:17:12,567 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-22 10:17:12,567 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-22 10:17:12,567 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-22 10:17:12,589 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 10:17:12,590 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 10:17:12,591 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 10:17:12,591 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-22 10:17:12,591 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-22 10:17:12,591 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-22 10:17:12,592 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-22 10:17:12,592 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-22 10:17:12,592 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-22 10:17:12,592 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-22 10:17:12,592 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-22 10:17:12,593 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 10:17:12,593 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-22 10:17:12,593 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 10:17:12,593 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-22 10:17:12,594 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 10:17:12,594 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 10:17:12,594 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 10:17:12,594 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 10:17:12,594 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-22 10:17:12,594 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 10:17:12,595 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 10:17:12,595 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 10:17:12,595 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 10:17:12,595 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 10:17:12,595 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 10:17:12,596 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 10:17:12,596 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 10:17:12,596 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 10:17:12,596 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 10:17:12,596 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-22 10:17:12,596 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 10:17:12,597 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 10:17:12,597 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 10:17:12,597 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 -> b03e1cb325e2c3a8ef30197a8e07012b3a728d97 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock [2018-10-22 10:17:12,646 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 10:17:12,670 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 10:17:12,675 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 10:17:12,677 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 10:17:12,677 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 10:17:12,680 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-invgen/large_const_true-unreach-call_true-termination.i [2018-10-22 10:17:12,748 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/01e0a18da/bba338c128d8491481fd7b5f59144a51/FLAGc8a313b0d [2018-10-22 10:17:13,204 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 10:17:13,205 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const_true-unreach-call_true-termination.i [2018-10-22 10:17:13,212 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/01e0a18da/bba338c128d8491481fd7b5f59144a51/FLAGc8a313b0d [2018-10-22 10:17:13,230 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/01e0a18da/bba338c128d8491481fd7b5f59144a51 [2018-10-22 10:17:13,236 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 10:17:13,238 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-22 10:17:13,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 10:17:13,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 10:17:13,243 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 10:17:13,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 10:17:13" (1/1) ... [2018-10-22 10:17:13,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@658e9926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:13, skipping insertion in model container [2018-10-22 10:17:13,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 10:17:13" (1/1) ... [2018-10-22 10:17:13,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 10:17:13,281 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 10:17:13,500 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 10:17:13,504 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 10:17:13,529 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 10:17:13,544 INFO L193 MainTranslator]: Completed translation [2018-10-22 10:17:13,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:13 WrapperNode [2018-10-22 10:17:13,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 10:17:13,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 10:17:13,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 10:17:13,546 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 10:17:13,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:13" (1/1) ... [2018-10-22 10:17:13,558 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:13" (1/1) ... [2018-10-22 10:17:13,563 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 10:17:13,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 10:17:13,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 10:17:13,564 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 10:17:13,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:13" (1/1) ... [2018-10-22 10:17:13,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:13" (1/1) ... [2018-10-22 10:17:13,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:13" (1/1) ... [2018-10-22 10:17:13,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:13" (1/1) ... [2018-10-22 10:17:13,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:13" (1/1) ... [2018-10-22 10:17:13,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:13" (1/1) ... [2018-10-22 10:17:13,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:13" (1/1) ... [2018-10-22 10:17:13,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 10:17:13,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 10:17:13,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 10:17:13,585 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 10:17:13,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:13" (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 10:17:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-22 10:17:13,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-22 10:17:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 10:17:13,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 10:17:13,712 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-22 10:17:13,712 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-22 10:17:13,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-22 10:17:13,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-22 10:17:14,164 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 10:17:14,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:17:14 BoogieIcfgContainer [2018-10-22 10:17:14,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 10:17:14,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 10:17:14,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 10:17:14,169 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 10:17:14,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 10:17:13" (1/3) ... [2018-10-22 10:17:14,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c743f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 10:17:14, skipping insertion in model container [2018-10-22 10:17:14,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:13" (2/3) ... [2018-10-22 10:17:14,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c743f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 10:17:14, skipping insertion in model container [2018-10-22 10:17:14,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:17:14" (3/3) ... [2018-10-22 10:17:14,172 INFO L112 eAbstractionObserver]: Analyzing ICFG large_const_true-unreach-call_true-termination.i [2018-10-22 10:17:14,182 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 10:17:14,191 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 10:17:14,208 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 10:17:14,238 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 10:17:14,239 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 10:17:14,239 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 10:17:14,239 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 10:17:14,239 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 10:17:14,240 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 10:17:14,240 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 10:17:14,240 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 10:17:14,240 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 10:17:14,256 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-10-22 10:17:14,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-22 10:17:14,263 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 10:17:14,264 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 10:17:14,266 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 10:17:14,271 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 10:17:14,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1169309281, now seen corresponding path program 1 times [2018-10-22 10:17:14,274 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 10:17:14,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:17:14,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 10:17:14,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:17:14,321 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 10:17:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 10:17:14,388 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 10:17:14,390 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 10:17:14,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-22 10:17:14,391 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 10:17:14,398 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-22 10:17:14,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-22 10:17:14,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 10:17:14,419 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2018-10-22 10:17:14,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 10:17:14,443 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2018-10-22 10:17:14,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-22 10:17:14,445 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-10-22 10:17:14,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 10:17:14,452 INFO L225 Difference]: With dead ends: 41 [2018-10-22 10:17:14,453 INFO L226 Difference]: Without dead ends: 20 [2018-10-22 10:17:14,456 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 10:17:14,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-22 10:17:14,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-22 10:17:14,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-22 10:17:14,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-10-22 10:17:14,495 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 14 [2018-10-22 10:17:14,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 10:17:14,495 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-10-22 10:17:14,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-22 10:17:14,495 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-10-22 10:17:14,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-22 10:17:14,496 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 10:17:14,496 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 10:17:14,497 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 10:17:14,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 10:17:14,497 INFO L82 PathProgramCache]: Analyzing trace with hash -659000362, now seen corresponding path program 1 times [2018-10-22 10:17:14,497 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 10:17:14,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:17:14,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 10:17:14,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:17:14,499 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 10:17:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 10:17:14,605 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 10:17:14,605 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 10:17:14,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-22 10:17:14,606 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 10:17:14,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-22 10:17:14,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-22 10:17:14,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-22 10:17:14,608 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2018-10-22 10:17:14,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 10:17:14,752 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2018-10-22 10:17:14,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-22 10:17:14,753 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-10-22 10:17:14,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 10:17:14,754 INFO L225 Difference]: With dead ends: 35 [2018-10-22 10:17:14,754 INFO L226 Difference]: Without dead ends: 22 [2018-10-22 10:17:14,756 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-22 10:17:14,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-22 10:17:14,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-22 10:17:14,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-22 10:17:14,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-10-22 10:17:14,763 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 15 [2018-10-22 10:17:14,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 10:17:14,763 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-10-22 10:17:14,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-22 10:17:14,764 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-10-22 10:17:14,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-22 10:17:14,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 10:17:14,765 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 10:17:14,766 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 10:17:14,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 10:17:14,766 INFO L82 PathProgramCache]: Analyzing trace with hash 594806073, now seen corresponding path program 1 times [2018-10-22 10:17:14,766 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 10:17:14,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:17:14,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 10:17:14,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:17:14,769 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 10:17:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 10:17:15,023 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-22 10:17:15,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 10:17:15,234 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 10:17:15,234 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-22 10:17:15,235 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 19 with the following transitions: [2018-10-22 10:17:15,237 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [37], [41], [47], [55], [58], [60], [66], [67], [68], [70], [75] [2018-10-22 10:17:15,282 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-22 10:17:15,282 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-22 10:17:16,133 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-22 10:17:16,134 INFO L272 AbstractInterpreter]: Visited 16 different actions 143 times. Merged at 7 different actions 90 times. Widened at 2 different actions 18 times. Found 1 fixpoints after 1 different actions. Largest state had 17 variables. [2018-10-22 10:17:16,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 10:17:16,179 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-22 10:17:16,305 INFO L232 lantSequenceWeakener]: Weakened 11 states. On average, predicates are now at 66.88% of their original sizes. [2018-10-22 10:17:16,305 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-22 10:17:16,909 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-22 10:17:16,910 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-22 10:17:16,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 16 [2018-10-22 10:17:16,910 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 10:17:16,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-22 10:17:16,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-22 10:17:16,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-10-22 10:17:16,911 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 11 states. [2018-10-22 10:17:18,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 10:17:18,276 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2018-10-22 10:17:18,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-22 10:17:18,277 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2018-10-22 10:17:18,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 10:17:18,278 INFO L225 Difference]: With dead ends: 44 [2018-10-22 10:17:18,278 INFO L226 Difference]: Without dead ends: 30 [2018-10-22 10:17:18,279 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2018-10-22 10:17:18,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-22 10:17:18,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2018-10-22 10:17:18,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-22 10:17:18,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-22 10:17:18,292 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 18 [2018-10-22 10:17:18,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 10:17:18,292 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-22 10:17:18,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-22 10:17:18,292 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-22 10:17:18,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-22 10:17:18,293 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 10:17:18,293 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 10:17:18,294 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 10:17:18,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 10:17:18,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1412198404, now seen corresponding path program 1 times [2018-10-22 10:17:18,294 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 10:17:18,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:17:18,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 10:17:18,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:17:18,296 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 10:17:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 10:17:18,412 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 10:17:18,413 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 10:17:18,413 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-22 10:17:18,413 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 10:17:18,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-22 10:17:18,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-22 10:17:18,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-22 10:17:18,414 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 5 states. [2018-10-22 10:17:18,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 10:17:18,725 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-10-22 10:17:18,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-22 10:17:18,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2018-10-22 10:17:18,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 10:17:18,726 INFO L225 Difference]: With dead ends: 32 [2018-10-22 10:17:18,726 INFO L226 Difference]: Without dead ends: 0 [2018-10-22 10:17:18,727 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-22 10:17:18,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-22 10:17:18,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-22 10:17:18,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-22 10:17:18,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-22 10:17:18,728 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2018-10-22 10:17:18,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 10:17:18,728 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-22 10:17:18,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-22 10:17:18,728 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-22 10:17:18,729 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-22 10:17:18,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-22 10:17:18,926 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2018-10-22 10:17:20,531 WARN L179 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 271 DAG size of output: 40 [2018-10-22 10:17:21,369 WARN L179 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 298 DAG size of output: 55 [2018-10-22 10:17:22,344 WARN L179 SmtUtils]: Spent 972.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 51 [2018-10-22 10:17:22,348 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-22 10:17:22,348 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-22 10:17:22,348 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-22 10:17:22,348 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-22 10:17:22,348 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-22 10:17:22,348 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-22 10:17:22,349 INFO L421 ceAbstractionStarter]: At program point L33(line 33) the Hoare annotation is: (and (<= 2 (+ main_~i~0 main_~n~0)) (<= (+ main_~v~0 main_~c1~0) 2147487647) (<= 8000 (* 2 main_~c1~0)) (= (mod main_~k~0 2000) 0) (<= main_~c1~0 (+ main_~i~0 3999)) (<= main_~c3~0 (+ main_~v~0 2147493648)) (= main_~c2~0 2000) (<= main_~i~0 main_~k~0) (<= (+ main_~i~0 1999) main_~c2~0) (<= (* 2 main_~j~0) 0) (= main_~c3~0 10000) (<= main_~n~0 (+ main_~j~0 1))) [2018-10-22 10:17:22,349 INFO L425 ceAbstractionStarter]: For program point L33-1(line 33) no Hoare annotation was computed. [2018-10-22 10:17:22,349 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 38) no Hoare annotation was computed. [2018-10-22 10:17:22,349 INFO L425 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-10-22 10:17:22,349 INFO L425 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-10-22 10:17:22,349 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 38) no Hoare annotation was computed. [2018-10-22 10:17:22,349 INFO L425 ceAbstractionStarter]: For program point L32-1(lines 32 36) no Hoare annotation was computed. [2018-10-22 10:17:22,350 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 38) the Hoare annotation is: true [2018-10-22 10:17:22,350 INFO L421 ceAbstractionStarter]: At program point L32-3(lines 32 36) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 main_~j~0)) (.cse2 (= main_~c3~0 10000))) (or (and (<= main_~n~0 0) (<= main_~i~0 0) .cse0) (let ((.cse1 (* 2 main_~c2~0))) (and (<= .cse1 4000) (= main_~c1~0 4000) (<= main_~n~0 1) (<= 0 (+ main_~c1~0 main_~n~0 2147479648)) (<= 4000 .cse1) .cse2 .cse0)) (and (= main_~c2~0 2000) (<= main_~c1~0 (+ main_~i~0 3999)) (<= main_~i~0 main_~k~0) (<= main_~n~0 (+ main_~j~0 1)) (<= 2 (+ main_~i~0 main_~n~0)) (<= 8000 (* 2 main_~c1~0)) (<= (+ main_~i~0 1999) main_~c2~0) (<= (* 2 main_~j~0) 0) (<= (+ main_~v~0 main_~c1~0) 2147487647) (= (mod main_~k~0 2000) 0) (<= main_~c3~0 (+ main_~v~0 2147493648)) .cse2))) [2018-10-22 10:17:22,350 INFO L425 ceAbstractionStarter]: For program point L32-4(lines 32 36) no Hoare annotation was computed. [2018-10-22 10:17:22,350 INFO L425 ceAbstractionStarter]: For program point L26(lines 26 29) no Hoare annotation was computed. [2018-10-22 10:17:22,350 INFO L425 ceAbstractionStarter]: For program point L24(lines 24 29) no Hoare annotation was computed. [2018-10-22 10:17:22,351 INFO L421 ceAbstractionStarter]: At program point L26-2(lines 20 30) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 main_~n~0)) (.cse0 (= (mod main_~k~0 2000) 0)) (.cse2 (= main_~c3~0 10000))) (or (and (<= 0 (+ main_~k~0 main_~n~0)) (<= main_~c2~0 (+ main_~i~0 2000)) .cse0 (<= 0 .cse1) (<= main_~i~0 0) (<= (+ main_~n~0 1991) main_~c2~0) (= main_~c1~0 4000) (<= 4000 (* 2 main_~c2~0)) .cse2) (and (<= (* 2 main_~n~0) 2) (= main_~c2~0 2000) (<= main_~c1~0 (+ main_~i~0 3999)) (<= main_~i~0 main_~k~0) (<= 2 .cse1) (<= 8000 (* 2 main_~c1~0)) (<= (+ main_~i~0 1999) main_~c2~0) (<= (+ main_~v~0 main_~c1~0) 2147487647) .cse0 (<= main_~c3~0 (+ main_~v~0 2147493648)) .cse2))) [2018-10-22 10:17:22,352 INFO L425 ceAbstractionStarter]: For program point L20-1(lines 20 30) no Hoare annotation was computed. [2018-10-22 10:17:22,352 INFO L425 ceAbstractionStarter]: For program point L20-3(lines 20 30) no Hoare annotation was computed. [2018-10-22 10:17:22,352 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-22 10:17:22,352 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-22 10:17:22,352 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-22 10:17:22,352 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-22 10:17:22,352 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-22 10:17:22,353 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-22 10:17:22,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 10:17:22 BoogieIcfgContainer [2018-10-22 10:17:22,366 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 10:17:22,372 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-22 10:17:22,372 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-22 10:17:22,372 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-22 10:17:22,373 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:17:14" (3/4) ... [2018-10-22 10:17:22,377 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-22 10:17:22,383 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-22 10:17:22,383 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-22 10:17:22,383 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-10-22 10:17:22,389 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2018-10-22 10:17:22,389 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-10-22 10:17:22,389 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-22 10:17:22,441 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/witness.graphml [2018-10-22 10:17:22,441 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-22 10:17:22,442 INFO L168 Benchmark]: Toolchain (without parser) took 9205.16 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 318.2 MB). Free memory was 951.9 MB in the beginning and 929.5 MB in the end (delta: 22.4 MB). Peak memory consumption was 340.6 MB. Max. memory is 11.5 GB. [2018-10-22 10:17:22,443 INFO L168 Benchmark]: CDTParser took 0.31 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 10:17:22,444 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.16 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. [2018-10-22 10:17:22,444 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.56 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. [2018-10-22 10:17:22,445 INFO L168 Benchmark]: Boogie Preprocessor took 21.26 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. [2018-10-22 10:17:22,445 INFO L168 Benchmark]: RCFGBuilder took 579.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -163.3 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2018-10-22 10:17:22,446 INFO L168 Benchmark]: TraceAbstraction took 8201.05 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 184.0 MB). Free memory was 1.1 GB in the beginning and 939.0 MB in the end (delta: 165.5 MB). Peak memory consumption was 388.9 MB. Max. memory is 11.5 GB. [2018-10-22 10:17:22,447 INFO L168 Benchmark]: Witness Printer took 69.12 ms. Allocated memory is still 1.3 GB. Free memory was 939.0 MB in the beginning and 929.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. [2018-10-22 10:17:22,452 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 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 306.16 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 17.56 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 21.26 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 579.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -163.3 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8201.05 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 184.0 MB). Free memory was 1.1 GB in the beginning and 939.0 MB in the end (delta: 165.5 MB). Peak memory consumption was 388.9 MB. Max. memory is 11.5 GB. * Witness Printer took 69.12 ms. Allocated memory is still 1.3 GB. Free memory was 939.0 MB in the beginning and 929.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 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: 32]: Loop Invariant Derived loop invariant: (((n <= 0 && i <= 0) && n <= j) || ((((((2 * c2 <= 4000 && c1 == 4000) && n <= 1) && 0 <= c1 + n + 2147479648) && 4000 <= 2 * c2) && c3 == 10000) && n <= j)) || (((((((((((c2 == 2000 && c1 <= i + 3999) && i <= k) && n <= j + 1) && 2 <= i + n) && 8000 <= 2 * c1) && i + 1999 <= c2) && 2 * j <= 0) && v + c1 <= 2147487647) && k % 2000 == 0) && c3 <= v + 2147493648) && c3 == 10000) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((((((((0 <= k + n && c2 <= i + 2000) && k % 2000 == 0) && 0 <= i + n) && i <= 0) && n + 1991 <= c2) && c1 == 4000) && 4000 <= 2 * c2) && c3 == 10000) || ((((((((((2 * n <= 2 && c2 == 2000) && c1 <= i + 3999) && i <= k) && 2 <= i + n) && 8000 <= 2 * c1) && i + 1999 <= c2) && v + c1 <= 2147487647) && k % 2000 == 0) && c3 <= v + 2147493648) && c3 == 10000) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. SAFE Result, 8.1s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 1.8s AutomataDifference, 0.0s DeadEndRemovalTime, 3.6s HoareAnnotationTime, HoareTripleCheckerStatistics: 79 SDtfs, 40 SDslu, 134 SDs, 0 SdLazy, 48 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.9s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.8529411764705883 AbsIntWeakeningRatio, 1.2352941176470589 AbsIntAvgWeakeningVarsNumRemoved, 27.41176470588235 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 12 PreInvPairs, 18 NumberOfFragments, 246 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 8 FomulaSimplificationsInter, 2134 FormulaSimplificationTreeSizeReductionInter, 3.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 3259 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 7/9 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...