./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loop-acceleration/simple_true-unreach-call3_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/loop-acceleration/simple_true-unreach-call3_true-termination.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d57e8ddb55bdff7b186468e47377e815829f9014 .......................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 18:19:56,308 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:19:56,309 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:19:56,321 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:19:56,322 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:19:56,323 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:19:56,324 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:19:56,326 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:19:56,328 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:19:56,329 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:19:56,330 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:19:56,330 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:19:56,331 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:19:56,332 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:19:56,334 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:19:56,335 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:19:56,335 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:19:56,337 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:19:56,340 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:19:56,341 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:19:56,342 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:19:56,344 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:19:56,347 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:19:56,347 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:19:56,347 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:19:56,348 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:19:56,349 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:19:56,350 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:19:56,351 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:19:56,353 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:19:56,353 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:19:56,354 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:19:56,354 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:19:56,354 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:19:56,356 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:19:56,356 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:19:56,357 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:19:56,378 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:19:56,379 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:19:56,381 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:19:56,381 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:19:56,382 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:19:56,382 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:19:56,382 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:19:56,382 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:19:56,382 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:19:56,383 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:19:56,383 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:19:56,383 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:19:56,383 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:19:56,383 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:19:56,383 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:19:56,384 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:19:56,384 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:19:56,384 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:19:56,384 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:19:56,384 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:19:56,385 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:19:56,386 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:19:56,386 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:19:56,386 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:19:56,387 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:19:56,387 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:19:56,387 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:19:56,388 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:19:56,388 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:19:56,388 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:19:56,388 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/UAutomizer-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 -> Automizer 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 -> d57e8ddb55bdff7b186468e47377e815829f9014 [2018-11-28 18:19:56,454 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:19:56,473 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:19:56,480 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:19:56,482 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:19:56,482 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:19:56,483 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loop-acceleration/simple_true-unreach-call3_true-termination.i [2018-11-28 18:19:56,540 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d164021c5/895774246d0d4292a00ae3276ba8647c/FLAGb1d9e0ccb [2018-11-28 18:19:56,962 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:19:56,962 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loop-acceleration/simple_true-unreach-call3_true-termination.i [2018-11-28 18:19:56,969 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d164021c5/895774246d0d4292a00ae3276ba8647c/FLAGb1d9e0ccb [2018-11-28 18:19:57,340 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d164021c5/895774246d0d4292a00ae3276ba8647c [2018-11-28 18:19:57,346 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:19:57,348 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:19:57,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:19:57,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:19:57,354 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:19:57,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:19:57" (1/1) ... [2018-11-28 18:19:57,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11e17088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:19:57, skipping insertion in model container [2018-11-28 18:19:57,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:19:57" (1/1) ... [2018-11-28 18:19:57,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:19:57,387 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:19:57,604 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:19:57,609 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:19:57,626 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:19:57,639 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:19:57,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:19:57 WrapperNode [2018-11-28 18:19:57,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:19:57,640 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:19:57,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:19:57,640 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:19:57,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:19:57" (1/1) ... [2018-11-28 18:19:57,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:19:57" (1/1) ... [2018-11-28 18:19:57,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:19:57,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:19:57,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:19:57,664 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:19:57,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:19:57" (1/1) ... [2018-11-28 18:19:57,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:19:57" (1/1) ... [2018-11-28 18:19:57,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:19:57" (1/1) ... [2018-11-28 18:19:57,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:19:57" (1/1) ... [2018-11-28 18:19:57,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:19:57" (1/1) ... [2018-11-28 18:19:57,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:19:57" (1/1) ... [2018-11-28 18:19:57,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:19:57" (1/1) ... [2018-11-28 18:19:57,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:19:57,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:19:57,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:19:57,690 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:19:57,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:19:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-28 18:19:57,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:19:57,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:19:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:19:57,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:19:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:19:57,828 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:19:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 18:19:57,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 18:19:58,100 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:19:58,100 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 18:19:58,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:19:58 BoogieIcfgContainer [2018-11-28 18:19:58,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:19:58,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:19:58,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:19:58,107 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:19:58,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:19:57" (1/3) ... [2018-11-28 18:19:58,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7a4c4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:19:58, skipping insertion in model container [2018-11-28 18:19:58,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:19:57" (2/3) ... [2018-11-28 18:19:58,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7a4c4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:19:58, skipping insertion in model container [2018-11-28 18:19:58,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:19:58" (3/3) ... [2018-11-28 18:19:58,112 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_true-unreach-call3_true-termination.i [2018-11-28 18:19:58,123 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:19:58,131 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:19:58,151 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:19:58,184 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:19:58,185 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:19:58,185 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:19:58,186 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:19:58,186 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:19:58,186 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:19:58,186 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:19:58,187 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:19:58,187 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:19:58,207 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-11-28 18:19:58,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 18:19:58,214 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:19:58,215 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:19:58,218 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:19:58,224 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:19:58,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2018-11-28 18:19:58,227 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:19:58,227 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:19:58,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:19:58,286 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:19:58,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:19:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:20:00,818 WARN L180 SmtUtils]: Spent 2.32 s on a formula simplification. DAG size of input: 43 DAG size of output: 15 [2018-11-28 18:20:00,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:20:00,944 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:20:00,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 18:20:00,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 18:20:00,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 18:20:00,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:20:00,968 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2018-11-28 18:20:01,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:20:01,065 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2018-11-28 18:20:01,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 18:20:01,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-11-28 18:20:01,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:20:01,076 INFO L225 Difference]: With dead ends: 26 [2018-11-28 18:20:01,077 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 18:20:01,080 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 18:20:01,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 18:20:01,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 18:20:01,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 18:20:01,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 18:20:01,105 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-11-28 18:20:01,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:20:01,106 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 18:20:01,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 18:20:01,106 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 18:20:01,106 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 18:20:01,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 18:20:01,191 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-28 18:20:01,191 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:20:01,191 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:20:01,192 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 18:20:01,192 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:20:01,192 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:20:01,192 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 9 16) the Hoare annotation is: true [2018-11-28 18:20:01,192 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 9 16) no Hoare annotation was computed. [2018-11-28 18:20:01,192 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 9 16) no Hoare annotation was computed. [2018-11-28 18:20:01,193 INFO L444 ceAbstractionStarter]: At program point L12-2(lines 12 14) the Hoare annotation is: (and (<= main_~x~0 (let ((.cse0 (div main_~x~0 2))) (+ (* 2 .cse0) (* 4294967296 (div (+ main_~x~0 (* (- 2) .cse0)) 4294967296))))) (<= 0 main_~x~0)) [2018-11-28 18:20:01,193 INFO L444 ceAbstractionStarter]: At program point L12-3(lines 12 14) the Hoare annotation is: (and (<= main_~x~0 (let ((.cse0 (div main_~x~0 2))) (+ (* 2 .cse0) (* 4294967296 (div (+ main_~x~0 (* (- 2) .cse0)) 4294967296))))) (<= 0 main_~x~0)) [2018-11-28 18:20:01,194 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-28 18:20:01,194 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-28 18:20:01,195 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-28 18:20:01,195 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-28 18:20:01,195 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-28 18:20:01,195 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-28 18:20:01,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:20:01 BoogieIcfgContainer [2018-11-28 18:20:01,215 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:20:01,217 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:20:01,217 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:20:01,217 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:20:01,218 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:19:58" (3/4) ... [2018-11-28 18:20:01,223 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 18:20:01,231 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 18:20:01,232 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 18:20:01,232 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-28 18:20:01,238 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-28 18:20:01,239 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-28 18:20:01,239 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 18:20:01,301 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:20:01,306 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:20:01,307 INFO L168 Benchmark]: Toolchain (without parser) took 3960.75 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -116.1 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:20:01,311 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:20:01,311 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.67 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:20:01,313 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.40 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:20:01,315 INFO L168 Benchmark]: Boogie Preprocessor took 25.81 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:20:01,315 INFO L168 Benchmark]: RCFGBuilder took 411.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -169.0 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2018-11-28 18:20:01,316 INFO L168 Benchmark]: TraceAbstraction took 3113.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 42.1 MB). Peak memory consumption was 42.1 MB. Max. memory is 11.5 GB. [2018-11-28 18:20:01,316 INFO L168 Benchmark]: Witness Printer took 89.91 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:20:01,322 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 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 290.67 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.3 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 23.40 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.81 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 411.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -169.0 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3113.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 42.1 MB). Peak memory consumption was 42.1 MB. Max. memory is 11.5 GB. * Witness Printer took 89.91 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. 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: 12]: Loop Invariant Derived loop invariant: x <= 2 * (x / 2) + 4294967296 * ((x + -2 * (x / 2)) / 4294967296) && 0 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. SAFE Result, 3.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10 SDtfs, 6 SDslu, 25 SDs, 0 SdLazy, 13 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 51 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 513 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...