./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/recursive/Ackermann04_true-unreach-call_true-no-overflow.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2e94e6aa 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/Ackermann04_true-unreach-call_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 307542ef0214b83df72c59e51df6e57e6557ac8b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2018-12-31 09:51:48,837 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 09:51:48,840 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 09:51:48,857 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 09:51:48,857 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 09:51:48,858 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 09:51:48,860 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 09:51:48,862 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 09:51:48,864 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 09:51:48,865 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 09:51:48,866 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 09:51:48,866 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 09:51:48,868 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 09:51:48,869 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 09:51:48,871 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 09:51:48,872 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 09:51:48,873 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 09:51:48,875 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 09:51:48,878 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 09:51:48,880 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 09:51:48,881 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 09:51:48,882 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 09:51:48,885 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 09:51:48,886 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 09:51:48,886 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 09:51:48,888 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 09:51:48,889 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 09:51:48,890 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 09:51:48,891 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 09:51:48,892 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 09:51:48,893 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 09:51:48,893 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 09:51:48,893 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 09:51:48,894 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 09:51:48,895 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 09:51:48,896 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 09:51:48,897 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 09:51:48,913 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 09:51:48,913 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 09:51:48,914 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 09:51:48,914 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 09:51:48,915 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 09:51:48,915 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 09:51:48,915 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 09:51:48,916 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 09:51:48,916 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 09:51:48,916 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 09:51:48,916 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 09:51:48,916 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 09:51:48,917 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 09:51:48,917 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 09:51:48,917 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 09:51:48,917 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 09:51:48,917 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 09:51:48,917 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 09:51:48,919 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 09:51:48,919 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 09:51:48,919 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 09:51:48,920 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 09:51:48,920 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 09:51:48,920 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 09:51:48,920 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 09:51:48,920 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 09:51:48,922 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 09:51:48,922 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 09:51:48,922 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 -> 307542ef0214b83df72c59e51df6e57e6557ac8b [2018-12-31 09:51:48,971 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 09:51:48,993 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 09:51:48,999 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 09:51:49,001 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 09:51:49,001 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 09:51:49,003 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/recursive/Ackermann04_true-unreach-call_true-no-overflow.c [2018-12-31 09:51:49,076 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4f57693c/b8792ec720224d9db42b524539d34f52/FLAGeedf8b154 [2018-12-31 09:51:49,515 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 09:51:49,515 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/recursive/Ackermann04_true-unreach-call_true-no-overflow.c [2018-12-31 09:51:49,522 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4f57693c/b8792ec720224d9db42b524539d34f52/FLAGeedf8b154 [2018-12-31 09:51:49,878 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4f57693c/b8792ec720224d9db42b524539d34f52 [2018-12-31 09:51:49,881 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 09:51:49,882 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 09:51:49,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 09:51:49,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 09:51:49,888 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 09:51:49,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 09:51:49" (1/1) ... [2018-12-31 09:51:49,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bbc90c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 09:51:49, skipping insertion in model container [2018-12-31 09:51:49,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 09:51:49" (1/1) ... [2018-12-31 09:51:49,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 09:51:49,920 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 09:51:50,143 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 09:51:50,150 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 09:51:50,187 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 09:51:50,205 INFO L195 MainTranslator]: Completed translation [2018-12-31 09:51:50,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 09:51:50 WrapperNode [2018-12-31 09:51:50,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 09:51:50,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 09:51:50,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 09:51:50,208 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 09:51:50,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 09:51:50" (1/1) ... [2018-12-31 09:51:50,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 09:51:50" (1/1) ... [2018-12-31 09:51:50,251 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 09:51:50,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 09:51:50,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 09:51:50,252 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 09:51:50,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 09:51:50" (1/1) ... [2018-12-31 09:51:50,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 09:51:50" (1/1) ... [2018-12-31 09:51:50,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 09:51:50" (1/1) ... [2018-12-31 09:51:50,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 09:51:50" (1/1) ... [2018-12-31 09:51:50,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 09:51:50" (1/1) ... [2018-12-31 09:51:50,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 09:51:50" (1/1) ... [2018-12-31 09:51:50,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 09:51:50" (1/1) ... [2018-12-31 09:51:50,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 09:51:50,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 09:51:50,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 09:51:50,285 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 09:51:50,287 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 09:51:50" (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 [2018-12-31 09:51:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 09:51:50,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 09:51:50,419 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2018-12-31 09:51:50,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2018-12-31 09:51:50,732 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 09:51:50,733 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-31 09:51:50,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 09:51:50 BoogieIcfgContainer [2018-12-31 09:51:50,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 09:51:50,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 09:51:50,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 09:51:50,739 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 09:51:50,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 09:51:49" (1/3) ... [2018-12-31 09:51:50,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e48c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 09:51:50, skipping insertion in model container [2018-12-31 09:51:50,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 09:51:50" (2/3) ... [2018-12-31 09:51:50,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e48c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 09:51:50, skipping insertion in model container [2018-12-31 09:51:50,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 09:51:50" (3/3) ... [2018-12-31 09:51:50,746 INFO L112 eAbstractionObserver]: Analyzing ICFG Ackermann04_true-unreach-call_true-no-overflow.c [2018-12-31 09:51:50,759 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 09:51:50,766 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-31 09:51:50,783 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-31 09:51:50,814 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 09:51:50,814 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 09:51:50,815 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 09:51:50,815 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 09:51:50,815 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 09:51:50,815 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 09:51:50,816 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 09:51:50,816 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 09:51:50,816 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 09:51:50,836 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-12-31 09:51:50,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-31 09:51:50,843 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 09:51:50,845 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 09:51:50,847 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 09:51:50,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 09:51:50,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1260755674, now seen corresponding path program 1 times [2018-12-31 09:51:50,856 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 09:51:50,857 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 09:51:50,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 09:51:50,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 09:51:50,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 09:51:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 09:51:51,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 09:51:51,116 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 09:51:51,117 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-31 09:51:51,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-31 09:51:51,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-31 09:51:51,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-31 09:51:51,137 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2018-12-31 09:51:51,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 09:51:51,377 INFO L93 Difference]: Finished difference Result 50 states and 71 transitions. [2018-12-31 09:51:51,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-31 09:51:51,379 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-12-31 09:51:51,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 09:51:51,390 INFO L225 Difference]: With dead ends: 50 [2018-12-31 09:51:51,390 INFO L226 Difference]: Without dead ends: 24 [2018-12-31 09:51:51,394 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-31 09:51:51,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-12-31 09:51:51,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-12-31 09:51:51,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-31 09:51:51,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2018-12-31 09:51:51,438 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 11 [2018-12-31 09:51:51,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 09:51:51,438 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2018-12-31 09:51:51,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-31 09:51:51,439 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2018-12-31 09:51:51,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-31 09:51:51,441 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 09:51:51,442 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 09:51:51,442 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 09:51:51,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 09:51:51,442 INFO L82 PathProgramCache]: Analyzing trace with hash 963920485, now seen corresponding path program 1 times [2018-12-31 09:51:51,443 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 09:51:51,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 09:51:51,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 09:51:51,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 09:51:51,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 09:51:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 09:51:51,584 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-31 09:51:51,584 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 09:51:51,584 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 [2018-12-31 09:51:51,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 09:51:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 09:51:51,636 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 09:51:51,662 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-31 09:51:51,689 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 09:51:51,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-12-31 09:51:51,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-31 09:51:51,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-31 09:51:51,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-31 09:51:51,691 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand 5 states. [2018-12-31 09:51:52,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 09:51:52,076 INFO L93 Difference]: Finished difference Result 48 states and 73 transitions. [2018-12-31 09:51:52,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-31 09:51:52,077 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-12-31 09:51:52,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 09:51:52,079 INFO L225 Difference]: With dead ends: 48 [2018-12-31 09:51:52,080 INFO L226 Difference]: Without dead ends: 26 [2018-12-31 09:51:52,082 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-31 09:51:52,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-12-31 09:51:52,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-12-31 09:51:52,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-31 09:51:52,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2018-12-31 09:51:52,092 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 18 [2018-12-31 09:51:52,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 09:51:52,093 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2018-12-31 09:51:52,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-31 09:51:52,094 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2018-12-31 09:51:52,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-31 09:51:52,097 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 09:51:52,097 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 09:51:52,097 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 09:51:52,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 09:51:52,098 INFO L82 PathProgramCache]: Analyzing trace with hash 416247163, now seen corresponding path program 1 times [2018-12-31 09:51:52,098 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 09:51:52,098 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 09:51:52,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 09:51:52,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 09:51:52,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 09:51:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 09:51:52,325 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-12-31 09:51:52,326 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 09:51:52,326 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 09:51:52,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 09:51:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 09:51:52,394 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 09:51:52,528 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-12-31 09:51:52,548 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 09:51:52,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2018-12-31 09:51:52,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-31 09:51:52,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-31 09:51:52,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-12-31 09:51:52,549 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand 11 states. [2018-12-31 09:51:54,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 09:51:54,134 INFO L93 Difference]: Finished difference Result 83 states and 145 transitions. [2018-12-31 09:51:54,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-12-31 09:51:54,136 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2018-12-31 09:51:54,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 09:51:54,147 INFO L225 Difference]: With dead ends: 83 [2018-12-31 09:51:54,149 INFO L226 Difference]: Without dead ends: 75 [2018-12-31 09:51:54,150 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2018-12-31 09:51:54,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-12-31 09:51:54,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-12-31 09:51:54,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-12-31 09:51:54,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 135 transitions. [2018-12-31 09:51:54,189 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 135 transitions. Word has length 31 [2018-12-31 09:51:54,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 09:51:54,189 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 135 transitions. [2018-12-31 09:51:54,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-31 09:51:54,189 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 135 transitions. [2018-12-31 09:51:54,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-12-31 09:51:54,197 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 09:51:54,197 INFO L402 BasicCegarLoop]: trace histogram [11, 11, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 09:51:54,197 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 09:51:54,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 09:51:54,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1207723706, now seen corresponding path program 2 times [2018-12-31 09:51:54,198 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 09:51:54,198 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 09:51:54,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 09:51:54,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 09:51:54,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 09:51:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 09:51:54,416 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 98 proven. 19 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2018-12-31 09:51:54,416 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 09:51:54,416 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 09:51:54,435 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-31 09:51:54,491 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-31 09:51:54,492 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 09:51:54,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 09:51:54,674 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 141 proven. 37 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-12-31 09:51:54,703 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 09:51:54,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 13 [2018-12-31 09:51:54,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-31 09:51:54,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-31 09:51:54,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2018-12-31 09:51:54,706 INFO L87 Difference]: Start difference. First operand 75 states and 135 transitions. Second operand 13 states. [2018-12-31 09:51:55,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 09:51:55,465 INFO L93 Difference]: Finished difference Result 223 states and 601 transitions. [2018-12-31 09:51:55,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-12-31 09:51:55,470 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 78 [2018-12-31 09:51:55,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 09:51:55,489 INFO L225 Difference]: With dead ends: 223 [2018-12-31 09:51:55,491 INFO L226 Difference]: Without dead ends: 152 [2018-12-31 09:51:55,497 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2018-12-31 09:51:55,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-12-31 09:51:55,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 81. [2018-12-31 09:51:55,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-12-31 09:51:55,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 146 transitions. [2018-12-31 09:51:55,556 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 146 transitions. Word has length 78 [2018-12-31 09:51:55,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 09:51:55,557 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 146 transitions. [2018-12-31 09:51:55,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-31 09:51:55,557 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 146 transitions. [2018-12-31 09:51:55,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-12-31 09:51:55,574 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 09:51:55,575 INFO L402 BasicCegarLoop]: trace histogram [21, 21, 12, 9, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 09:51:55,575 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 09:51:55,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 09:51:55,576 INFO L82 PathProgramCache]: Analyzing trace with hash 541327914, now seen corresponding path program 3 times [2018-12-31 09:51:55,576 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 09:51:55,576 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 09:51:55,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 09:51:55,578 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 09:51:55,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 09:51:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 09:51:56,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 367 proven. 209 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2018-12-31 09:51:56,045 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 09:51:56,045 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 09:51:56,055 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-31 09:51:56,142 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2018-12-31 09:51:56,142 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 09:51:56,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 09:51:56,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 367 proven. 209 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2018-12-31 09:51:56,221 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 09:51:56,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-12-31 09:51:56,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-12-31 09:51:56,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-12-31 09:51:56,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2018-12-31 09:51:56,223 INFO L87 Difference]: Start difference. First operand 81 states and 146 transitions. Second operand 19 states. [2018-12-31 09:51:59,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 09:51:59,704 INFO L93 Difference]: Finished difference Result 499 states and 1788 transitions. [2018-12-31 09:51:59,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-12-31 09:51:59,707 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 143 [2018-12-31 09:51:59,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 09:51:59,731 INFO L225 Difference]: With dead ends: 499 [2018-12-31 09:51:59,731 INFO L226 Difference]: Without dead ends: 422 [2018-12-31 09:51:59,741 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1177, Invalid=5795, Unknown=0, NotChecked=0, Total=6972 [2018-12-31 09:51:59,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2018-12-31 09:51:59,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 166. [2018-12-31 09:51:59,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-12-31 09:51:59,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 425 transitions. [2018-12-31 09:51:59,841 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 425 transitions. Word has length 143 [2018-12-31 09:51:59,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 09:51:59,841 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 425 transitions. [2018-12-31 09:51:59,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-12-31 09:51:59,842 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 425 transitions. [2018-12-31 09:51:59,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-12-31 09:51:59,852 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 09:51:59,853 INFO L402 BasicCegarLoop]: trace histogram [34, 34, 20, 14, 13, 13, 13, 13, 13, 13, 13, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 09:51:59,853 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 09:51:59,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 09:51:59,855 INFO L82 PathProgramCache]: Analyzing trace with hash -888807625, now seen corresponding path program 4 times [2018-12-31 09:51:59,855 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 09:51:59,855 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 09:51:59,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 09:51:59,856 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 09:51:59,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 09:51:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 09:52:00,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2788 backedges. 721 proven. 156 refuted. 0 times theorem prover too weak. 1911 trivial. 0 not checked. [2018-12-31 09:52:00,917 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 09:52:00,917 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 09:52:00,947 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-31 09:52:01,036 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-31 09:52:01,036 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 09:52:01,058 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 09:52:01,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2788 backedges. 538 proven. 780 refuted. 0 times theorem prover too weak. 1470 trivial. 0 not checked. [2018-12-31 09:52:01,313 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 09:52:01,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 13 [2018-12-31 09:52:01,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-31 09:52:01,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-31 09:52:01,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2018-12-31 09:52:01,315 INFO L87 Difference]: Start difference. First operand 166 states and 425 transitions. Second operand 13 states. [2018-12-31 09:52:02,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 09:52:02,131 INFO L93 Difference]: Finished difference Result 281 states and 902 transitions. [2018-12-31 09:52:02,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-12-31 09:52:02,132 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 229 [2018-12-31 09:52:02,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 09:52:02,136 INFO L225 Difference]: With dead ends: 281 [2018-12-31 09:52:02,136 INFO L226 Difference]: Without dead ends: 106 [2018-12-31 09:52:02,143 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2018-12-31 09:52:02,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-12-31 09:52:02,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2018-12-31 09:52:02,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-12-31 09:52:02,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 192 transitions. [2018-12-31 09:52:02,166 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 192 transitions. Word has length 229 [2018-12-31 09:52:02,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 09:52:02,167 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 192 transitions. [2018-12-31 09:52:02,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-31 09:52:02,167 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 192 transitions. [2018-12-31 09:52:02,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-12-31 09:52:02,172 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 09:52:02,172 INFO L402 BasicCegarLoop]: trace histogram [21, 21, 12, 9, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 09:52:02,172 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 09:52:02,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 09:52:02,172 INFO L82 PathProgramCache]: Analyzing trace with hash -349964984, now seen corresponding path program 5 times [2018-12-31 09:52:02,173 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 09:52:02,173 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 09:52:02,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 09:52:02,174 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 09:52:02,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 09:52:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 09:52:02,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 144 proven. 362 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2018-12-31 09:52:02,389 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 09:52:02,389 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 09:52:02,400 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-31 09:52:02,445 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-12-31 09:52:02,445 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 09:52:02,450 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 09:52:02,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 595 proven. 114 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-12-31 09:52:02,523 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 09:52:02,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-12-31 09:52:02,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-31 09:52:02,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-31 09:52:02,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2018-12-31 09:52:02,525 INFO L87 Difference]: Start difference. First operand 104 states and 192 transitions. Second operand 14 states. [2018-12-31 09:52:03,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 09:52:03,034 INFO L93 Difference]: Finished difference Result 198 states and 394 transitions. [2018-12-31 09:52:03,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-12-31 09:52:03,034 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 143 [2018-12-31 09:52:03,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 09:52:03,037 INFO L225 Difference]: With dead ends: 198 [2018-12-31 09:52:03,037 INFO L226 Difference]: Without dead ends: 107 [2018-12-31 09:52:03,040 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=203, Invalid=853, Unknown=0, NotChecked=0, Total=1056 [2018-12-31 09:52:03,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-12-31 09:52:03,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 100. [2018-12-31 09:52:03,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-12-31 09:52:03,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 182 transitions. [2018-12-31 09:52:03,054 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 182 transitions. Word has length 143 [2018-12-31 09:52:03,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 09:52:03,054 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 182 transitions. [2018-12-31 09:52:03,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-31 09:52:03,056 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 182 transitions. [2018-12-31 09:52:03,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-12-31 09:52:03,058 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 09:52:03,059 INFO L402 BasicCegarLoop]: trace histogram [23, 23, 13, 10, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 09:52:03,059 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 09:52:03,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 09:52:03,059 INFO L82 PathProgramCache]: Analyzing trace with hash -437561620, now seen corresponding path program 6 times [2018-12-31 09:52:03,059 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 09:52:03,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 09:52:03,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 09:52:03,062 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 09:52:03,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 09:52:03,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 09:52:03,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 421 proven. 286 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2018-12-31 09:52:03,422 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 09:52:03,423 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 09:52:03,433 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-31 09:52:03,539 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2018-12-31 09:52:03,539 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 09:52:03,545 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 09:52:03,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 421 proven. 286 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2018-12-31 09:52:03,669 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 09:52:03,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-12-31 09:52:03,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-12-31 09:52:03,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-12-31 09:52:03,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2018-12-31 09:52:03,671 INFO L87 Difference]: Start difference. First operand 100 states and 182 transitions. Second operand 20 states. [2018-12-31 09:52:04,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 09:52:04,926 INFO L93 Difference]: Finished difference Result 221 states and 442 transitions. [2018-12-31 09:52:04,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-12-31 09:52:04,932 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 156 [2018-12-31 09:52:04,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 09:52:04,935 INFO L225 Difference]: With dead ends: 221 [2018-12-31 09:52:04,935 INFO L226 Difference]: Without dead ends: 134 [2018-12-31 09:52:04,939 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=456, Invalid=2196, Unknown=0, NotChecked=0, Total=2652 [2018-12-31 09:52:04,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-12-31 09:52:04,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 124. [2018-12-31 09:52:04,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-12-31 09:52:04,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 233 transitions. [2018-12-31 09:52:04,956 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 233 transitions. Word has length 156 [2018-12-31 09:52:04,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 09:52:04,957 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 233 transitions. [2018-12-31 09:52:04,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-12-31 09:52:04,957 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 233 transitions. [2018-12-31 09:52:04,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-12-31 09:52:04,961 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 09:52:04,961 INFO L402 BasicCegarLoop]: trace histogram [25, 25, 14, 11, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 09:52:04,961 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 09:52:04,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 09:52:04,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1768194034, now seen corresponding path program 7 times [2018-12-31 09:52:04,962 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 09:52:04,962 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 09:52:04,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 09:52:04,963 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 09:52:04,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 09:52:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 09:52:05,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 477 proven. 372 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2018-12-31 09:52:05,240 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 09:52:05,240 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 09:52:05,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 09:52:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 09:52:05,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 09:52:05,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 477 proven. 372 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2018-12-31 09:52:05,397 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 09:52:05,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-12-31 09:52:05,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-12-31 09:52:05,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-12-31 09:52:05,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2018-12-31 09:52:05,401 INFO L87 Difference]: Start difference. First operand 124 states and 233 transitions. Second operand 21 states. [2018-12-31 09:52:06,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 09:52:06,548 INFO L93 Difference]: Finished difference Result 260 states and 539 transitions. [2018-12-31 09:52:06,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-12-31 09:52:06,549 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 169 [2018-12-31 09:52:06,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 09:52:06,553 INFO L225 Difference]: With dead ends: 260 [2018-12-31 09:52:06,553 INFO L226 Difference]: Without dead ends: 149 [2018-12-31 09:52:06,557 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 766 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=536, Invalid=2544, Unknown=0, NotChecked=0, Total=3080 [2018-12-31 09:52:06,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-12-31 09:52:06,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 139. [2018-12-31 09:52:06,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-12-31 09:52:06,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 269 transitions. [2018-12-31 09:52:06,576 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 269 transitions. Word has length 169 [2018-12-31 09:52:06,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 09:52:06,576 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 269 transitions. [2018-12-31 09:52:06,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-12-31 09:52:06,577 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 269 transitions. [2018-12-31 09:52:06,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-12-31 09:52:06,581 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 09:52:06,581 INFO L402 BasicCegarLoop]: trace histogram [27, 27, 15, 12, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 09:52:06,582 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 09:52:06,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 09:52:06,582 INFO L82 PathProgramCache]: Analyzing trace with hash -728546296, now seen corresponding path program 8 times [2018-12-31 09:52:06,582 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 09:52:06,582 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 09:52:06,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 09:52:06,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 09:52:06,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 09:52:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 09:52:07,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 657 proven. 84 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2018-12-31 09:52:07,020 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 09:52:07,020 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 09:52:07,029 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-31 09:52:07,107 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-31 09:52:07,107 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 09:52:07,112 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 09:52:07,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 657 proven. 84 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2018-12-31 09:52:07,172 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 09:52:07,172 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-12-31 09:52:07,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-12-31 09:52:07,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-12-31 09:52:07,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2018-12-31 09:52:07,174 INFO L87 Difference]: Start difference. First operand 139 states and 269 transitions. Second operand 23 states. [2018-12-31 09:52:08,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 09:52:08,230 INFO L93 Difference]: Finished difference Result 168 states and 323 transitions. [2018-12-31 09:52:08,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-12-31 09:52:08,231 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 182 [2018-12-31 09:52:08,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 09:52:08,232 INFO L225 Difference]: With dead ends: 168 [2018-12-31 09:52:08,232 INFO L226 Difference]: Without dead ends: 0 [2018-12-31 09:52:08,235 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=313, Invalid=1667, Unknown=0, NotChecked=0, Total=1980 [2018-12-31 09:52:08,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-31 09:52:08,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-31 09:52:08,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-31 09:52:08,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-31 09:52:08,237 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 182 [2018-12-31 09:52:08,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 09:52:08,237 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-31 09:52:08,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-12-31 09:52:08,237 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-31 09:52:08,237 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-31 09:52:08,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-31 09:52:08,933 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 09:52:08,941 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 09:52:09,031 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 09:52:09,062 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 09:52:09,066 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 09:52:09,135 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 09:52:09,166 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 09:52:09,170 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 09:52:09,802 WARN L181 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 81 [2018-12-31 09:52:10,039 WARN L181 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 81 [2018-12-31 09:52:10,228 WARN L181 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 81 [2018-12-31 09:52:10,600 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 09:52:10,605 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 09:52:10,608 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 09:52:10,686 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 09:52:10,698 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 09:52:10,698 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 09:52:10,762 WARN L181 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 94 [2018-12-31 09:52:10,935 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 09:52:10,968 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 09:52:10,972 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 09:52:11,013 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 09:52:11,047 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 09:52:11,050 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 09:52:11,188 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 09:52:12,074 WARN L181 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 13 [2018-12-31 09:52:15,149 WARN L181 SmtUtils]: Spent 3.06 s on a formula simplification. DAG size of input: 213 DAG size of output: 52 [2018-12-31 09:52:15,287 WARN L181 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 9 [2018-12-31 09:52:15,317 INFO L448 ceAbstractionStarter]: For program point L33(lines 33 38) no Hoare annotation was computed. [2018-12-31 09:52:15,317 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-31 09:52:15,317 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-12-31 09:52:15,317 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-31 09:52:15,317 INFO L448 ceAbstractionStarter]: For program point L27(lines 27 31) no Hoare annotation was computed. [2018-12-31 09:52:15,318 INFO L451 ceAbstractionStarter]: At program point L25(lines 25 45) the Hoare annotation is: true [2018-12-31 09:52:15,318 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2018-12-31 09:52:15,318 INFO L448 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2018-12-31 09:52:15,318 INFO L448 ceAbstractionStarter]: For program point L40(lines 40 44) no Hoare annotation was computed. [2018-12-31 09:52:15,318 INFO L451 ceAbstractionStarter]: At program point L39(line 39) the Hoare annotation is: true [2018-12-31 09:52:15,318 INFO L448 ceAbstractionStarter]: For program point L39-1(line 39) no Hoare annotation was computed. [2018-12-31 09:52:15,318 INFO L448 ceAbstractionStarter]: For program point ackermannEXIT(lines 14 22) no Hoare annotation was computed. [2018-12-31 09:52:15,318 INFO L451 ceAbstractionStarter]: At program point ackermannENTRY(lines 14 22) the Hoare annotation is: true [2018-12-31 09:52:15,318 INFO L444 ceAbstractionStarter]: At program point L21(line 21) the Hoare annotation is: (and (= |ackermann_#in~m| ackermann_~m) (<= |ackermann_#in~n| ackermann_~n) (or (< |ackermann_#in~m| 0) (< 0 |ackermann_#in~m|))) [2018-12-31 09:52:15,319 INFO L448 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2018-12-31 09:52:15,319 INFO L444 ceAbstractionStarter]: At program point L19(line 19) the Hoare annotation is: (and (<= |ackermann_#in~n| 0) (= |ackermann_#in~m| ackermann_~m) (<= |ackermann_#in~n| ackermann_~n)) [2018-12-31 09:52:15,319 INFO L444 ceAbstractionStarter]: At program point L21-2(line 21) the Hoare annotation is: (let ((.cse1 (<= |ackermann_#in~n| 2)) (.cse2 (<= 2 |ackermann_#t~ret1|)) (.cse0 (< 0 |ackermann_#in~m|))) (and (or .cse0 (and .cse1 .cse2)) (let ((.cse6 (= ackermann_~m |ackermann_#in~m|)) (.cse7 (<= |ackermann_#in~n| ackermann_~n)) (.cse13 (<= |ackermann_#in~m| 1))) (let ((.cse11 (<= 3 |ackermann_#t~ret1|)) (.cse14 (and .cse6 .cse7 .cse13 .cse2))) (let ((.cse4 (and .cse11 .cse14)) (.cse10 (<= 6 |ackermann_#t~ret1|)) (.cse9 (and .cse6 .cse7 .cse2)) (.cse5 (<= 5 |ackermann_#t~ret1|)) (.cse8 (<= 2 |ackermann_#in~m|)) (.cse12 (<= |ackermann_#in~n| 1)) (.cse3 (<= 1 |ackermann_#in~m|))) (or (and .cse3 (<= 4 |ackermann_#t~ret1|) .cse4 (<= |ackermann_#in~n| 3)) (and .cse3 .cse5 .cse4 (<= |ackermann_#in~n| 4)) (and .cse6 .cse7 (= 0 |ackermann_#in~m|)) (and .cse8 .cse9 .cse10) (and .cse3 .cse4 .cse10) (and (and .cse11 .cse6) .cse7 .cse12) (and (and .cse1 .cse9) .cse5 .cse8 (<= |ackermann_#in~m| 2)) (and (and .cse6 .cse13) .cse7 .cse12 .cse2) (and .cse11 .cse3 (and .cse1 .cse14)))))) (or .cse0 (< 1 |ackermann_#in~n|)))) [2018-12-31 09:52:15,319 INFO L448 ceAbstractionStarter]: For program point L18(lines 18 20) no Hoare annotation was computed. [2018-12-31 09:52:15,319 INFO L448 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2018-12-31 09:52:15,319 INFO L448 ceAbstractionStarter]: For program point L21-3(line 21) no Hoare annotation was computed. [2018-12-31 09:52:15,319 INFO L448 ceAbstractionStarter]: For program point L15(lines 15 17) no Hoare annotation was computed. [2018-12-31 09:52:15,319 INFO L448 ceAbstractionStarter]: For program point ackermannFINAL(lines 14 22) no Hoare annotation was computed. [2018-12-31 09:52:15,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 09:52:15 BoogieIcfgContainer [2018-12-31 09:52:15,326 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 09:52:15,327 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 09:52:15,327 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 09:52:15,327 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 09:52:15,330 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 09:51:50" (3/4) ... [2018-12-31 09:52:15,335 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-31 09:52:15,344 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ackermann [2018-12-31 09:52:15,350 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-31 09:52:15,351 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-31 09:52:15,420 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-31 09:52:15,420 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 09:52:15,422 INFO L168 Benchmark]: Toolchain (without parser) took 25540.15 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 332.4 MB). Free memory was 951.4 MB in the beginning and 786.1 MB in the end (delta: 165.3 MB). Peak memory consumption was 497.7 MB. Max. memory is 11.5 GB. [2018-12-31 09:52:15,423 INFO L168 Benchmark]: CDTParser took 0.17 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. [2018-12-31 09:52:15,423 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.65 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-31 09:52:15,424 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.90 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 09:52:15,424 INFO L168 Benchmark]: Boogie Preprocessor took 33.05 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 09:52:15,424 INFO L168 Benchmark]: RCFGBuilder took 448.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.8 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -125.8 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2018-12-31 09:52:15,426 INFO L168 Benchmark]: TraceAbstraction took 24592.07 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 239.6 MB). Free memory was 1.1 GB in the beginning and 786.1 MB in the end (delta: 280.3 MB). Peak memory consumption was 548.4 MB. Max. memory is 11.5 GB. [2018-12-31 09:52:15,427 INFO L168 Benchmark]: Witness Printer took 93.14 ms. Allocated memory is still 1.4 GB. Free memory is still 786.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 09:52:15,432 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 322.65 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 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 43.90 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.05 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 448.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.8 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -125.8 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 24592.07 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 239.6 MB). Free memory was 1.1 GB in the beginning and 786.1 MB in the end (delta: 280.3 MB). Peak memory consumption was 548.4 MB. Max. memory is 11.5 GB. * Witness Printer took 93.14 ms. Allocated memory is still 1.4 GB. Free memory is still 786.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: 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: 25]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 1 error locations. SAFE Result, 24.5s OverallTime, 10 OverallIterations, 34 TraceHistogramMax, 11.4s AutomataDifference, 0.0s DeadEndRemovalTime, 7.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 251 SDtfs, 252 SDslu, 974 SDs, 0 SdLazy, 3202 SolverSat, 772 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1560 GetRequests, 1222 SyntacticMatches, 1 SemanticMatches, 337 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4644 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=5, 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: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 356 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 662 PreInvPairs, 2057 NumberOfFragments, 236 HoareAnnotationTreeSize, 662 FomulaSimplifications, 49759 FormulaSimplificationTreeSizeReduction, 3.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 47318 FormulaSimplificationTreeSizeReductionInter, 3.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 2309 NumberOfCodeBlocks, 2202 NumberOfCodeBlocksAsserted, 54 NumberOfCheckSat, 2290 ConstructedInterpolants, 0 QuantifiedInterpolants, 637972 SizeOfPredicates, 76 NumberOfNonLiveVariables, 3079 ConjunctsInSsa, 217 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 15831/19224 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...