./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/recursive-simple/id_b5_o10_true-unreach-call_true-termination_true-no-overflow.c --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/recursive-simple/id_b5_o10_true-unreach-call_true-termination_true-no-overflow.c -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 0449565d36be00deee168302da89fb227fc941e3 ................................................................................................................................................................................................................................................................................................................................................................................................ 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 18:52:39,145 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:52:39,147 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:52:39,163 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:52:39,163 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:52:39,164 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:52:39,166 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:52:39,167 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:52:39,169 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:52:39,170 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:52:39,171 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:52:39,171 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:52:39,172 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:52:39,173 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:52:39,174 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:52:39,175 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:52:39,176 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:52:39,178 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:52:39,180 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:52:39,182 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:52:39,183 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:52:39,184 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:52:39,188 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:52:39,188 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:52:39,188 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:52:39,189 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:52:39,193 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:52:39,196 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:52:39,197 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:52:39,199 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:52:39,199 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:52:39,203 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:52:39,203 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:52:39,203 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:52:39,204 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:52:39,205 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:52:39,206 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:52:39,222 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:52:39,224 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:52:39,225 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:52:39,225 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:52:39,225 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:52:39,226 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:52:39,228 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:52:39,228 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:52:39,228 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:52:39,228 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:52:39,228 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:52:39,229 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:52:39,229 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:52:39,229 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:52:39,229 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:52:39,229 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:52:39,229 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:52:39,230 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:52:39,230 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:52:39,230 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:52:39,230 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:52:39,230 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:52:39,230 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:52:39,231 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:52:39,231 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:52:39,231 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:52:39,231 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:52:39,231 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:52:39,232 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:52:39,233 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:52:39,233 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 -> 0449565d36be00deee168302da89fb227fc941e3 [2018-11-28 18:52:39,270 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:52:39,284 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:52:39,288 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:52:39,290 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:52:39,290 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:52:39,291 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/recursive-simple/id_b5_o10_true-unreach-call_true-termination_true-no-overflow.c [2018-11-28 18:52:39,369 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/447d2ad83/f2f128a8f6cb43819ea4fe080e24d6e8/FLAGeb504643e [2018-11-28 18:52:39,776 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:52:39,777 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/recursive-simple/id_b5_o10_true-unreach-call_true-termination_true-no-overflow.c [2018-11-28 18:52:39,783 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/447d2ad83/f2f128a8f6cb43819ea4fe080e24d6e8/FLAGeb504643e [2018-11-28 18:52:40,171 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/447d2ad83/f2f128a8f6cb43819ea4fe080e24d6e8 [2018-11-28 18:52:40,175 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:52:40,177 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:52:40,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:52:40,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:52:40,183 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:52:40,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:52:40" (1/1) ... [2018-11-28 18:52:40,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d80e72b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:52:40, skipping insertion in model container [2018-11-28 18:52:40,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:52:40" (1/1) ... [2018-11-28 18:52:40,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:52:40,213 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:52:40,409 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:52:40,414 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:52:40,436 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:52:40,454 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:52:40,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:52:40 WrapperNode [2018-11-28 18:52:40,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:52:40,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:52:40,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:52:40,456 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:52:40,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:52:40" (1/1) ... [2018-11-28 18:52:40,473 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:52:40" (1/1) ... [2018-11-28 18:52:40,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:52:40,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:52:40,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:52:40,484 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:52:40,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:52:40" (1/1) ... [2018-11-28 18:52:40,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:52:40" (1/1) ... [2018-11-28 18:52:40,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:52:40" (1/1) ... [2018-11-28 18:52:40,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:52:40" (1/1) ... [2018-11-28 18:52:40,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:52:40" (1/1) ... [2018-11-28 18:52:40,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:52:40" (1/1) ... [2018-11-28 18:52:40,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:52:40" (1/1) ... [2018-11-28 18:52:40,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:52:40,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:52:40,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:52:40,520 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:52:40,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:52:40" (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 18:52:40,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:52:40,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:52:40,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:52:40,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:52:40,660 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:52:40,661 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:52:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure id [2018-11-28 18:52:40,662 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2018-11-28 18:52:40,874 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:52:40,875 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 18:52:40,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:52:40 BoogieIcfgContainer [2018-11-28 18:52:40,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:52:40,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:52:40,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:52:40,880 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:52:40,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:52:40" (1/3) ... [2018-11-28 18:52:40,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724bcd93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:52:40, skipping insertion in model container [2018-11-28 18:52:40,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:52:40" (2/3) ... [2018-11-28 18:52:40,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724bcd93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:52:40, skipping insertion in model container [2018-11-28 18:52:40,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:52:40" (3/3) ... [2018-11-28 18:52:40,885 INFO L112 eAbstractionObserver]: Analyzing ICFG id_b5_o10_true-unreach-call_true-termination_true-no-overflow.c [2018-11-28 18:52:40,896 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:52:40,904 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:52:40,921 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:52:40,951 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:52:40,952 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:52:40,952 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:52:40,952 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:52:40,952 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:52:40,952 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:52:40,952 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:52:40,953 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:52:40,953 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:52:40,972 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-11-28 18:52:40,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-28 18:52:40,980 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:52:40,981 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:52:40,983 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:52:40,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:52:40,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1250208381, now seen corresponding path program 1 times [2018-11-28 18:52:40,996 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:52:40,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:52:41,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:52:41,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:52:41,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:52:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:52:41,303 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 18:52:41,306 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:52:41,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 18:52:41,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 18:52:41,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 18:52:41,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:52:41,337 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2018-11-28 18:52:41,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:52:41,441 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-11-28 18:52:41,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 18:52:41,443 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-28 18:52:41,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:52:41,455 INFO L225 Difference]: With dead ends: 33 [2018-11-28 18:52:41,455 INFO L226 Difference]: Without dead ends: 19 [2018-11-28 18:52:41,459 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:52:41,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-28 18:52:41,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-28 18:52:41,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-28 18:52:41,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-11-28 18:52:41,504 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 13 [2018-11-28 18:52:41,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:52:41,505 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-11-28 18:52:41,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 18:52:41,506 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-11-28 18:52:41,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 18:52:41,508 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:52:41,508 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:52:41,508 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:52:41,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:52:41,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1951994857, now seen corresponding path program 1 times [2018-11-28 18:52:41,510 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:52:41,510 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:52:41,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:52:41,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:52:41,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:52:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:52:41,658 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 18:52:41,658 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:52:41,658 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 18:52:41,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 18:52:41,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 18:52:41,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:52:41,662 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 5 states. [2018-11-28 18:52:41,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:52:41,742 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2018-11-28 18:52:41,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 18:52:41,743 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-11-28 18:52:41,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:52:41,744 INFO L225 Difference]: With dead ends: 31 [2018-11-28 18:52:41,745 INFO L226 Difference]: Without dead ends: 23 [2018-11-28 18:52:41,746 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:52:41,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-28 18:52:41,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2018-11-28 18:52:41,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-28 18:52:41,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-11-28 18:52:41,753 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 20 [2018-11-28 18:52:41,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:52:41,753 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-11-28 18:52:41,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 18:52:41,753 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-11-28 18:52:41,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 18:52:41,754 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:52:41,755 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:52:41,755 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:52:41,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:52:41,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1923365706, now seen corresponding path program 1 times [2018-11-28 18:52:41,755 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:52:41,756 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:52:41,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:52:41,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:52:41,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:52:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:52:41,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 18:52:41,996 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 18:52:41,996 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 18:52:42,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:52:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:52:42,072 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:52:42,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 18:52:42,295 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 18:52:42,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2018-11-28 18:52:42,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 18:52:42,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 18:52:42,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-11-28 18:52:42,297 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 10 states. [2018-11-28 18:52:42,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:52:42,456 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-11-28 18:52:42,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 18:52:42,457 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2018-11-28 18:52:42,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:52:42,458 INFO L225 Difference]: With dead ends: 27 [2018-11-28 18:52:42,458 INFO L226 Difference]: Without dead ends: 23 [2018-11-28 18:52:42,459 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-11-28 18:52:42,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-28 18:52:42,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-28 18:52:42,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-28 18:52:42,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-11-28 18:52:42,465 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2018-11-28 18:52:42,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:52:42,465 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-11-28 18:52:42,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 18:52:42,466 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-11-28 18:52:42,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-28 18:52:42,467 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:52:42,467 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:52:42,467 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:52:42,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:52:42,468 INFO L82 PathProgramCache]: Analyzing trace with hash 376843494, now seen corresponding path program 1 times [2018-11-28 18:52:42,468 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:52:42,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:52:42,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:52:42,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:52:42,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:52:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:52:42,545 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-28 18:52:42,545 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:52:42,546 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 18:52:42,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 18:52:42,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 18:52:42,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:52:42,548 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 5 states. [2018-11-28 18:52:42,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:52:42,597 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-11-28 18:52:42,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 18:52:42,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-11-28 18:52:42,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:52:42,599 INFO L225 Difference]: With dead ends: 23 [2018-11-28 18:52:42,599 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 18:52:42,600 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:52:42,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 18:52:42,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 18:52:42,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 18:52:42,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 18:52:42,601 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-11-28 18:52:42,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:52:42,601 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 18:52:42,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 18:52:42,602 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 18:52:42,602 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 18:52:42,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 18:52:42,629 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-28 18:52:42,629 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:52:42,630 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:52:42,630 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 18:52:42,630 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:52:42,630 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:52:42,630 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2018-11-28 18:52:42,630 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 11 17) no Hoare annotation was computed. [2018-11-28 18:52:42,631 INFO L448 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-11-28 18:52:42,631 INFO L448 ceAbstractionStarter]: For program point L14(lines 14 16) no Hoare annotation was computed. [2018-11-28 18:52:42,631 INFO L451 ceAbstractionStarter]: At program point L13(line 13) the Hoare annotation is: true [2018-11-28 18:52:42,631 INFO L448 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2018-11-28 18:52:42,631 INFO L448 ceAbstractionStarter]: For program point L14-2(lines 11 17) no Hoare annotation was computed. [2018-11-28 18:52:42,631 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2018-11-28 18:52:42,632 INFO L448 ceAbstractionStarter]: For program point idFINAL(lines 4 9) no Hoare annotation was computed. [2018-11-28 18:52:42,632 INFO L448 ceAbstractionStarter]: For program point idEXIT(lines 4 9) no Hoare annotation was computed. [2018-11-28 18:52:42,632 INFO L451 ceAbstractionStarter]: At program point idENTRY(lines 4 9) the Hoare annotation is: true [2018-11-28 18:52:42,632 INFO L448 ceAbstractionStarter]: For program point L7(line 7) no Hoare annotation was computed. [2018-11-28 18:52:42,632 INFO L451 ceAbstractionStarter]: At program point L6(line 6) the Hoare annotation is: true [2018-11-28 18:52:42,632 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-28 18:52:42,633 INFO L448 ceAbstractionStarter]: For program point L6-1(line 6) no Hoare annotation was computed. [2018-11-28 18:52:42,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:52:42 BoogieIcfgContainer [2018-11-28 18:52:42,636 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:52:42,637 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:52:42,637 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:52:42,637 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:52:42,638 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:52:40" (3/4) ... [2018-11-28 18:52:42,642 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 18:52:42,650 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 18:52:42,651 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 18:52:42,651 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2018-11-28 18:52:42,656 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-28 18:52:42,656 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-28 18:52:42,657 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 18:52:42,710 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:52:42,710 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:52:42,711 INFO L168 Benchmark]: Toolchain (without parser) took 2535.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 952.7 MB in the beginning and 1.0 GB in the end (delta: -84.6 MB). Peak memory consumption was 42.3 MB. Max. memory is 11.5 GB. [2018-11-28 18:52:42,713 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:52:42,714 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.08 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:52:42,715 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.23 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:52:42,715 INFO L168 Benchmark]: Boogie Preprocessor took 36.12 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:52:42,716 INFO L168 Benchmark]: RCFGBuilder took 355.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -162.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2018-11-28 18:52:42,717 INFO L168 Benchmark]: TraceAbstraction took 1760.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 67.4 MB). Peak memory consumption was 67.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:52:42,718 INFO L168 Benchmark]: Witness Printer took 73.48 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:52:42,722 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 277.08 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 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 27.23 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.12 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 355.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -162.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1760.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 67.4 MB). Peak memory consumption was 67.4 MB. Max. memory is 11.5 GB. * Witness Printer took 73.48 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 1.6s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 74 SDtfs, 6 SDslu, 251 SDs, 0 SdLazy, 51 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=3, 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 2967 SizeOfPredicates, 2 NumberOfNonLiveVariables, 51 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 23/27 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...