./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/array-examples/sanfoundry_24_true-unreach-call_true-termination.i --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/array-examples/sanfoundry_24_true-unreach-call_true-termination.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63b671e779f88a024ade70e8e63a2c2a737aca60 .................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2018-12-30 12:41:20,953 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-30 12:41:20,955 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-30 12:41:20,971 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-30 12:41:20,972 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-30 12:41:20,973 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-30 12:41:20,975 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-30 12:41:20,977 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-30 12:41:20,979 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-30 12:41:20,980 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-30 12:41:20,981 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-30 12:41:20,981 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-30 12:41:20,983 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-30 12:41:20,984 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-30 12:41:20,986 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-30 12:41:20,986 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-30 12:41:20,987 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-30 12:41:20,990 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-30 12:41:20,992 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-30 12:41:20,994 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-30 12:41:20,995 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-30 12:41:20,996 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-30 12:41:20,999 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-30 12:41:21,000 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-30 12:41:21,000 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-30 12:41:21,001 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-30 12:41:21,002 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-30 12:41:21,004 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-30 12:41:21,004 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-30 12:41:21,006 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-30 12:41:21,006 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-30 12:41:21,007 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-30 12:41:21,007 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-30 12:41:21,008 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-30 12:41:21,009 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-30 12:41:21,010 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-30 12:41:21,011 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-30 12:41:21,027 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-30 12:41:21,027 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-30 12:41:21,028 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-30 12:41:21,028 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-30 12:41:21,029 INFO L133 SettingsManager]: * Use SBE=true [2018-12-30 12:41:21,029 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-30 12:41:21,030 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-30 12:41:21,030 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-30 12:41:21,030 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-30 12:41:21,030 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-30 12:41:21,030 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-30 12:41:21,030 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-30 12:41:21,031 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-30 12:41:21,031 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-30 12:41:21,031 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-30 12:41:21,031 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-30 12:41:21,031 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-30 12:41:21,032 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-30 12:41:21,032 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-30 12:41:21,032 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-30 12:41:21,032 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-30 12:41:21,032 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-30 12:41:21,032 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-30 12:41:21,033 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-30 12:41:21,033 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-30 12:41:21,033 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-30 12:41:21,033 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-30 12:41:21,033 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-30 12:41:21,033 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 -> 63b671e779f88a024ade70e8e63a2c2a737aca60 [2018-12-30 12:41:21,076 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-30 12:41:21,090 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-30 12:41:21,094 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-30 12:41:21,096 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-30 12:41:21,097 INFO L276 PluginConnector]: CDTParser initialized [2018-12-30 12:41:21,097 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/sanfoundry_24_true-unreach-call_true-termination.i [2018-12-30 12:41:21,161 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d15ba6bbe/ee452e1ab3c24d7c8bd94d1df9d3afe5/FLAG2bb9b81c0 [2018-12-30 12:41:21,646 INFO L307 CDTParser]: Found 1 translation units. [2018-12-30 12:41:21,647 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/array-examples/sanfoundry_24_true-unreach-call_true-termination.i [2018-12-30 12:41:21,655 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d15ba6bbe/ee452e1ab3c24d7c8bd94d1df9d3afe5/FLAG2bb9b81c0 [2018-12-30 12:41:21,982 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d15ba6bbe/ee452e1ab3c24d7c8bd94d1df9d3afe5 [2018-12-30 12:41:21,987 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-30 12:41:21,990 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-30 12:41:21,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-30 12:41:21,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-30 12:41:21,996 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-30 12:41:21,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.12 12:41:21" (1/1) ... [2018-12-30 12:41:22,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e8af47e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 12:41:21, skipping insertion in model container [2018-12-30 12:41:22,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.12 12:41:21" (1/1) ... [2018-12-30 12:41:22,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-30 12:41:22,033 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-30 12:41:22,225 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-30 12:41:22,230 INFO L191 MainTranslator]: Completed pre-run [2018-12-30 12:41:22,252 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-30 12:41:22,275 INFO L195 MainTranslator]: Completed translation [2018-12-30 12:41:22,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 12:41:22 WrapperNode [2018-12-30 12:41:22,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-30 12:41:22,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-30 12:41:22,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-30 12:41:22,277 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-30 12:41:22,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 12:41:22" (1/1) ... [2018-12-30 12:41:22,297 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 12:41:22" (1/1) ... [2018-12-30 12:41:22,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-30 12:41:22,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-30 12:41:22,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-30 12:41:22,321 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-30 12:41:22,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 12:41:22" (1/1) ... [2018-12-30 12:41:22,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 12:41:22" (1/1) ... [2018-12-30 12:41:22,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 12:41:22" (1/1) ... [2018-12-30 12:41:22,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 12:41:22" (1/1) ... [2018-12-30 12:41:22,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 12:41:22" (1/1) ... [2018-12-30 12:41:22,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 12:41:22" (1/1) ... [2018-12-30 12:41:22,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 12:41:22" (1/1) ... [2018-12-30 12:41:22,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-30 12:41:22,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-30 12:41:22,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-30 12:41:22,425 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-30 12:41:22,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 12:41:22" (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 [2018-12-30 12:41:22,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-30 12:41:22,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-30 12:41:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-30 12:41:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2018-12-30 12:41:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-30 12:41:22,907 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-30 12:41:22,907 INFO L280 CfgBuilder]: Removed 14 assue(true) statements. [2018-12-30 12:41:22,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.12 12:41:22 BoogieIcfgContainer [2018-12-30 12:41:22,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-30 12:41:22,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-30 12:41:22,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-30 12:41:22,914 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-30 12:41:22,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.12 12:41:21" (1/3) ... [2018-12-30 12:41:22,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74fb75c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.12 12:41:22, skipping insertion in model container [2018-12-30 12:41:22,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 12:41:22" (2/3) ... [2018-12-30 12:41:22,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74fb75c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.12 12:41:22, skipping insertion in model container [2018-12-30 12:41:22,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.12 12:41:22" (3/3) ... [2018-12-30 12:41:22,919 INFO L112 eAbstractionObserver]: Analyzing ICFG sanfoundry_24_true-unreach-call_true-termination.i [2018-12-30 12:41:22,930 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-30 12:41:22,938 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-12-30 12:41:22,958 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-12-30 12:41:22,992 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-30 12:41:22,993 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-30 12:41:22,993 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-30 12:41:22,993 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-30 12:41:22,995 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-30 12:41:22,995 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-30 12:41:22,995 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-30 12:41:22,995 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-30 12:41:22,995 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-30 12:41:23,013 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-12-30 12:41:23,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-30 12:41:23,021 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 12:41:23,022 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-12-30 12:41:23,026 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 12:41:23,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 12:41:23,033 INFO L82 PathProgramCache]: Analyzing trace with hash 889661640, now seen corresponding path program 1 times [2018-12-30 12:41:23,035 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 12:41:23,036 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 12:41:23,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 12:41:23,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 12:41:23,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 12:41:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-30 12:41:23,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-30 12:41:23,371 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-30 12:41:23,371 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-30 12:41:23,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-30 12:41:23,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-30 12:41:23,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-30 12:41:23,398 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 4 states. [2018-12-30 12:41:23,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-30 12:41:23,835 INFO L93 Difference]: Finished difference Result 49 states and 68 transitions. [2018-12-30 12:41:23,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-30 12:41:23,837 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-12-30 12:41:23,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-30 12:41:23,848 INFO L225 Difference]: With dead ends: 49 [2018-12-30 12:41:23,848 INFO L226 Difference]: Without dead ends: 22 [2018-12-30 12:41:23,851 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-30 12:41:23,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-12-30 12:41:23,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 15. [2018-12-30 12:41:23,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-12-30 12:41:23,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2018-12-30 12:41:23,884 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 6 [2018-12-30 12:41:23,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-30 12:41:23,885 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-12-30 12:41:23,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-30 12:41:23,885 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2018-12-30 12:41:23,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-30 12:41:23,886 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 12:41:23,886 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-12-30 12:41:23,886 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 12:41:23,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 12:41:23,887 INFO L82 PathProgramCache]: Analyzing trace with hash 227373216, now seen corresponding path program 1 times [2018-12-30 12:41:23,887 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 12:41:23,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 12:41:23,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 12:41:23,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 12:41:23,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 12:41:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-30 12:41:24,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-30 12:41:24,011 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-30 12:41:24,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-30 12:41:24,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-30 12:41:24,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-30 12:41:24,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-30 12:41:24,015 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand 5 states. [2018-12-30 12:41:24,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-30 12:41:24,301 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2018-12-30 12:41:24,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-30 12:41:24,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-12-30 12:41:24,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-30 12:41:24,303 INFO L225 Difference]: With dead ends: 36 [2018-12-30 12:41:24,303 INFO L226 Difference]: Without dead ends: 27 [2018-12-30 12:41:24,304 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-30 12:41:24,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-12-30 12:41:24,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 16. [2018-12-30 12:41:24,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-12-30 12:41:24,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2018-12-30 12:41:24,315 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 8 [2018-12-30 12:41:24,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-30 12:41:24,316 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2018-12-30 12:41:24,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-30 12:41:24,316 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2018-12-30 12:41:24,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-30 12:41:24,318 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 12:41:24,318 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-30 12:41:24,318 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 12:41:24,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 12:41:24,319 INFO L82 PathProgramCache]: Analyzing trace with hash 544895622, now seen corresponding path program 1 times [2018-12-30 12:41:24,319 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 12:41:24,319 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 12:41:24,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 12:41:24,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 12:41:24,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 12:41:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-30 12:41:24,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-30 12:41:24,495 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-30 12:41:24,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-30 12:41:24,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-30 12:41:24,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-30 12:41:24,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-30 12:41:24,496 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2018-12-30 12:41:24,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-30 12:41:24,598 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2018-12-30 12:41:24,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-30 12:41:24,601 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-12-30 12:41:24,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-30 12:41:24,602 INFO L225 Difference]: With dead ends: 19 [2018-12-30 12:41:24,602 INFO L226 Difference]: Without dead ends: 0 [2018-12-30 12:41:24,603 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-30 12:41:24,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-30 12:41:24,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-30 12:41:24,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-30 12:41:24,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-30 12:41:24,608 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2018-12-30 12:41:24,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-30 12:41:24,608 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-30 12:41:24,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-30 12:41:24,608 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-30 12:41:24,609 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-30 12:41:24,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-30 12:41:24,654 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2018-12-30 12:41:24,654 INFO L448 ceAbstractionStarter]: For program point L15-2(lines 15 21) no Hoare annotation was computed. [2018-12-30 12:41:24,654 INFO L451 ceAbstractionStarter]: At program point L15-3(lines 15 21) the Hoare annotation is: true [2018-12-30 12:41:24,655 INFO L448 ceAbstractionStarter]: For program point L15-4(lines 15 21) no Hoare annotation was computed. [2018-12-30 12:41:24,655 INFO L448 ceAbstractionStarter]: For program point L3(line 3) no Hoare annotation was computed. [2018-12-30 12:41:24,655 INFO L448 ceAbstractionStarter]: For program point L3-1(line 3) no Hoare annotation was computed. [2018-12-30 12:41:24,655 INFO L448 ceAbstractionStarter]: For program point L3-3(lines 1 30) no Hoare annotation was computed. [2018-12-30 12:41:24,655 INFO L448 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-12-30 12:41:24,655 INFO L448 ceAbstractionStarter]: For program point L3-4(line 3) no Hoare annotation was computed. [2018-12-30 12:41:24,655 INFO L448 ceAbstractionStarter]: For program point L3-5(line 3) no Hoare annotation was computed. [2018-12-30 12:41:24,655 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-12-30 12:41:24,656 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-30 12:41:24,656 INFO L448 ceAbstractionStarter]: For program point L3-7(lines 1 30) no Hoare annotation was computed. [2018-12-30 12:41:24,656 INFO L448 ceAbstractionStarter]: For program point L24(lines 24 27) no Hoare annotation was computed. [2018-12-30 12:41:24,656 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-30 12:41:24,656 INFO L451 ceAbstractionStarter]: At program point L29(lines 10 30) the Hoare annotation is: true [2018-12-30 12:41:24,656 INFO L448 ceAbstractionStarter]: For program point L17(lines 17 20) no Hoare annotation was computed. [2018-12-30 12:41:24,656 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2018-12-30 12:41:24,656 INFO L448 ceAbstractionStarter]: For program point L22-2(lines 22 28) no Hoare annotation was computed. [2018-12-30 12:41:24,657 INFO L451 ceAbstractionStarter]: At program point L22-3(lines 22 28) the Hoare annotation is: true [2018-12-30 12:41:24,658 INFO L448 ceAbstractionStarter]: For program point L22-4(lines 22 28) no Hoare annotation was computed. [2018-12-30 12:41:24,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.12 12:41:24 BoogieIcfgContainer [2018-12-30 12:41:24,665 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-30 12:41:24,665 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-30 12:41:24,665 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-30 12:41:24,665 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-30 12:41:24,667 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.12 12:41:22" (3/4) ... [2018-12-30 12:41:24,671 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-30 12:41:24,682 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-12-30 12:41:24,682 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-30 12:41:24,683 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-30 12:41:24,737 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-30 12:41:24,737 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-30 12:41:24,738 INFO L168 Benchmark]: Toolchain (without parser) took 2751.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -107.9 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. [2018-12-30 12:41:24,741 INFO L168 Benchmark]: CDTParser took 0.73 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-30 12:41:24,741 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.12 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 935.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-12-30 12:41:24,742 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.25 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-30 12:41:24,743 INFO L168 Benchmark]: Boogie Preprocessor took 103.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -187.2 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. [2018-12-30 12:41:24,744 INFO L168 Benchmark]: RCFGBuilder took 482.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2018-12-30 12:41:24,744 INFO L168 Benchmark]: TraceAbstraction took 1756.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 54.2 MB). Peak memory consumption was 54.2 MB. Max. memory is 11.5 GB. [2018-12-30 12:41:24,746 INFO L168 Benchmark]: Witness Printer took 72.26 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-30 12:41:24,751 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 285.12 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 935.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.25 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 103.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -187.2 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 482.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1756.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 54.2 MB). Peak memory consumption was 54.2 MB. Max. memory is 11.5 GB. * Witness Printer took 72.26 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 2 error locations. SAFE Result, 1.6s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 57 SDtfs, 31 SDslu, 61 SDs, 0 SdLazy, 75 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 18 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 10 NumberOfFragments, 3 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 424 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...