./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/ldv-regression/test07_true-unreach-call_true-termination.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/ldv-regression/test07_true-unreach-call_true-termination.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 3fb4305112f4412dd538a0b9d1d1441504f2d55d ...................................................................................................................................................................................................................................................................................................... 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 04:23:36,923 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 04:23:36,925 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 04:23:36,944 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 04:23:36,944 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 04:23:36,945 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 04:23:36,949 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 04:23:36,951 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 04:23:36,955 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 04:23:36,956 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 04:23:36,958 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 04:23:36,959 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 04:23:36,960 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 04:23:36,961 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 04:23:36,962 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 04:23:36,963 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 04:23:36,964 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 04:23:36,966 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 04:23:36,967 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 04:23:36,969 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 04:23:36,970 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 04:23:36,971 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 04:23:36,974 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 04:23:36,974 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 04:23:36,974 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 04:23:36,975 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 04:23:36,976 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 04:23:36,977 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 04:23:36,977 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 04:23:36,979 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 04:23:36,979 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 04:23:36,979 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 04:23:36,980 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 04:23:36,980 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 04:23:36,981 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 04:23:36,981 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 04:23:36,982 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 04:23:37,015 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 04:23:37,016 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 04:23:37,017 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 04:23:37,018 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 04:23:37,019 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 04:23:37,019 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 04:23:37,019 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 04:23:37,019 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 04:23:37,019 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 04:23:37,019 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 04:23:37,020 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 04:23:37,020 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 04:23:37,020 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 04:23:37,020 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 04:23:37,020 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 04:23:37,020 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 04:23:37,023 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 04:23:37,024 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 04:23:37,024 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 04:23:37,024 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 04:23:37,025 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 04:23:37,025 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 04:23:37,025 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 04:23:37,025 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 04:23:37,025 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 04:23:37,025 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 04:23:37,027 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 04:23:37,027 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 04:23:37,027 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 -> 3fb4305112f4412dd538a0b9d1d1441504f2d55d [2018-12-31 04:23:37,097 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 04:23:37,114 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 04:23:37,122 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 04:23:37,124 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 04:23:37,125 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 04:23:37,126 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/ldv-regression/test07_true-unreach-call_true-termination.c [2018-12-31 04:23:37,199 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/887fd53bd/01c30c9664a34dc1879f54d769cffa0b/FLAGd24363e49 [2018-12-31 04:23:37,671 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 04:23:37,672 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/ldv-regression/test07_true-unreach-call_true-termination.c [2018-12-31 04:23:37,679 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/887fd53bd/01c30c9664a34dc1879f54d769cffa0b/FLAGd24363e49 [2018-12-31 04:23:38,001 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/887fd53bd/01c30c9664a34dc1879f54d769cffa0b [2018-12-31 04:23:38,004 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 04:23:38,006 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 04:23:38,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 04:23:38,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 04:23:38,011 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 04:23:38,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 04:23:38" (1/1) ... [2018-12-31 04:23:38,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a7d93eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:38, skipping insertion in model container [2018-12-31 04:23:38,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 04:23:38" (1/1) ... [2018-12-31 04:23:38,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 04:23:38,044 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 04:23:38,235 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 04:23:38,252 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 04:23:38,268 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 04:23:38,285 INFO L195 MainTranslator]: Completed translation [2018-12-31 04:23:38,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:38 WrapperNode [2018-12-31 04:23:38,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 04:23:38,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 04:23:38,287 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 04:23:38,287 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 04:23:38,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:38" (1/1) ... [2018-12-31 04:23:38,302 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:38" (1/1) ... [2018-12-31 04:23:38,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 04:23:38,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 04:23:38,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 04:23:38,323 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 04:23:38,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:38" (1/1) ... [2018-12-31 04:23:38,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:38" (1/1) ... [2018-12-31 04:23:38,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:38" (1/1) ... [2018-12-31 04:23:38,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:38" (1/1) ... [2018-12-31 04:23:38,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:38" (1/1) ... [2018-12-31 04:23:38,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:38" (1/1) ... [2018-12-31 04:23:38,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:38" (1/1) ... [2018-12-31 04:23:38,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 04:23:38,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 04:23:38,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 04:23:38,346 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 04:23:38,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:38" (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 04:23:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-31 04:23:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 04:23:38,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 04:23:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-31 04:23:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-12-31 04:23:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2018-12-31 04:23:38,677 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 04:23:38,678 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-31 04:23:38,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:23:38 BoogieIcfgContainer [2018-12-31 04:23:38,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 04:23:38,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 04:23:38,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 04:23:38,682 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 04:23:38,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 04:23:38" (1/3) ... [2018-12-31 04:23:38,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52396cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 04:23:38, skipping insertion in model container [2018-12-31 04:23:38,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:23:38" (2/3) ... [2018-12-31 04:23:38,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52396cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 04:23:38, skipping insertion in model container [2018-12-31 04:23:38,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:23:38" (3/3) ... [2018-12-31 04:23:38,686 INFO L112 eAbstractionObserver]: Analyzing ICFG test07_true-unreach-call_true-termination.c [2018-12-31 04:23:38,697 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 04:23:38,705 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-31 04:23:38,724 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-31 04:23:38,754 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 04:23:38,755 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 04:23:38,755 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 04:23:38,755 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 04:23:38,755 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 04:23:38,755 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 04:23:38,756 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 04:23:38,756 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 04:23:38,756 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 04:23:38,770 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2018-12-31 04:23:38,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-31 04:23:38,776 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:23:38,777 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-12-31 04:23:38,779 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:23:38,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:23:38,785 INFO L82 PathProgramCache]: Analyzing trace with hash 889508715, now seen corresponding path program 1 times [2018-12-31 04:23:38,787 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:23:38,788 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:23:38,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:23:38,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:23:38,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:23:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:23:39,227 WARN L181 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 12 [2018-12-31 04:23:39,270 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 04:23:39,272 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:23:39,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-31 04:23:39,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-31 04:23:39,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-31 04:23:39,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-31 04:23:39,291 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2018-12-31 04:23:39,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:23:39,437 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-12-31 04:23:39,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-31 04:23:39,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-12-31 04:23:39,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:23:39,448 INFO L225 Difference]: With dead ends: 20 [2018-12-31 04:23:39,448 INFO L226 Difference]: Without dead ends: 7 [2018-12-31 04:23:39,452 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-31 04:23:39,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-12-31 04:23:39,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-12-31 04:23:39,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-31 04:23:39,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2018-12-31 04:23:39,483 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2018-12-31 04:23:39,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:23:39,483 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2018-12-31 04:23:39,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-31 04:23:39,484 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2018-12-31 04:23:39,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-31 04:23:39,484 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:23:39,485 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-12-31 04:23:39,485 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:23:39,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:23:39,485 INFO L82 PathProgramCache]: Analyzing trace with hash 889568297, now seen corresponding path program 1 times [2018-12-31 04:23:39,486 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:23:39,486 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:23:39,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:23:39,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:23:39,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:23:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:23:39,953 WARN L181 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-12-31 04:23:39,972 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 04:23:39,973 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:23:39,973 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-31 04:23:39,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-31 04:23:39,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-31 04:23:39,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-31 04:23:39,976 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand 4 states. [2018-12-31 04:23:40,120 WARN L181 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-12-31 04:23:40,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:23:40,121 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2018-12-31 04:23:40,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-31 04:23:40,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-12-31 04:23:40,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:23:40,122 INFO L225 Difference]: With dead ends: 7 [2018-12-31 04:23:40,122 INFO L226 Difference]: Without dead ends: 0 [2018-12-31 04:23:40,123 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-31 04:23:40,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-31 04:23:40,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-31 04:23:40,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-31 04:23:40,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-31 04:23:40,124 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2018-12-31 04:23:40,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:23:40,125 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-31 04:23:40,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-31 04:23:40,125 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-31 04:23:40,125 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-31 04:23:40,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-31 04:23:40,161 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-31 04:23:40,161 INFO L448 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-12-31 04:23:40,162 INFO L444 ceAbstractionStarter]: At program point L30(lines 17 37) the Hoare annotation is: false [2018-12-31 04:23:40,162 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-12-31 04:23:40,162 INFO L448 ceAbstractionStarter]: For program point L29(lines 29 31) no Hoare annotation was computed. [2018-12-31 04:23:40,162 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-31 04:23:40,162 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2018-12-31 04:23:40,163 INFO L444 ceAbstractionStarter]: At program point L13(lines 7 15) the Hoare annotation is: (and (= ~p1~0.base ~p2~0.base) (not (= |ULTIMATE.start_f_#res| 0)) (= ~p1~0.offset ~p2~0.offset)) [2018-12-31 04:23:40,163 INFO L448 ceAbstractionStarter]: For program point L9(lines 9 14) no Hoare annotation was computed. [2018-12-31 04:23:40,163 INFO L451 ceAbstractionStarter]: At program point L36(lines 17 37) the Hoare annotation is: true [2018-12-31 04:23:40,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 04:23:40 BoogieIcfgContainer [2018-12-31 04:23:40,179 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 04:23:40,180 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 04:23:40,180 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 04:23:40,180 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 04:23:40,181 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:23:38" (3/4) ... [2018-12-31 04:23:40,185 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-31 04:23:40,198 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-12-31 04:23:40,198 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-31 04:23:40,232 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (p1 == p2 && !(\result == 0)) && p1 == p2 [2018-12-31 04:23:40,270 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-31 04:23:40,271 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 04:23:40,275 INFO L168 Benchmark]: Toolchain (without parser) took 2266.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 954.0 MB in the beginning and 1.1 GB in the end (delta: -110.2 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2018-12-31 04:23:40,276 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 04:23:40,276 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.43 ms. Allocated memory is still 1.0 GB. Free memory was 954.0 MB in the beginning and 942.0 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-12-31 04:23:40,278 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.15 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 04:23:40,278 INFO L168 Benchmark]: Boogie Preprocessor took 22.29 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-31 04:23:40,280 INFO L168 Benchmark]: RCFGBuilder took 332.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -174.6 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-12-31 04:23:40,280 INFO L168 Benchmark]: TraceAbstraction took 1500.28 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: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 11.5 GB. [2018-12-31 04:23:40,282 INFO L168 Benchmark]: Witness Printer took 91.13 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. [2018-12-31 04:23:40,288 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 279.43 ms. Allocated memory is still 1.0 GB. Free memory was 954.0 MB in the beginning and 942.0 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 36.15 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.29 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 332.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -174.6 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1500.28 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: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 11.5 GB. * Witness Printer took 91.13 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: 35]: 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: 7]: Loop Invariant Derived loop invariant: (p1 == p2 && !(\result == 0)) && p1 == p2 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. SAFE Result, 1.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9 SDtfs, 4 SDslu, 7 SDs, 0 SdLazy, 16 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 6 NumberOfFragments, 13 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 445 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...