./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/id_build.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-invgen/id_build.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8e693e301fe03afa61a3f7e2110361a5e60df7f9 ................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 10:57:24,916 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 10:57:24,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 10:57:24,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 10:57:24,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 10:57:24,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 10:57:24,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 10:57:24,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 10:57:24,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 10:57:24,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 10:57:24,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 10:57:24,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 10:57:24,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 10:57:24,963 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 10:57:24,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 10:57:24,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 10:57:24,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 10:57:24,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 10:57:24,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 10:57:24,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 10:57:24,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 10:57:24,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 10:57:24,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 10:57:24,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 10:57:24,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 10:57:24,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 10:57:24,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 10:57:24,977 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 10:57:24,977 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 10:57:24,978 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 10:57:24,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 10:57:24,979 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 10:57:24,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 10:57:24,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 10:57:24,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 10:57:24,982 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 10:57:24,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 10:57:24,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 10:57:24,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 10:57:24,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 10:57:24,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 10:57:24,985 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 10:57:25,005 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 10:57:25,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 10:57:25,006 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 10:57:25,006 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 10:57:25,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 10:57:25,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 10:57:25,008 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 10:57:25,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 10:57:25,008 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 10:57:25,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 10:57:25,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 10:57:25,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 10:57:25,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 10:57:25,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 10:57:25,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 10:57:25,010 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 10:57:25,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 10:57:25,010 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 10:57:25,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 10:57:25,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 10:57:25,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 10:57:25,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 10:57:25,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 10:57:25,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 10:57:25,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 10:57:25,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 10:57:25,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 10:57:25,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 10:57:25,013 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 10:57:25,013 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 10:57:25,013 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e693e301fe03afa61a3f7e2110361a5e60df7f9 [2021-08-29 10:57:25,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 10:57:25,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 10:57:25,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 10:57:25,358 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 10:57:25,359 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 10:57:25,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/id_build.i [2021-08-29 10:57:25,427 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04e297c15/b55d5d7c699f4defa1aeeaef8a4cd0ef/FLAG1b05affb3 [2021-08-29 10:57:25,846 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 10:57:25,846 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/id_build.i [2021-08-29 10:57:25,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04e297c15/b55d5d7c699f4defa1aeeaef8a4cd0ef/FLAG1b05affb3 [2021-08-29 10:57:26,270 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04e297c15/b55d5d7c699f4defa1aeeaef8a4cd0ef [2021-08-29 10:57:26,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 10:57:26,274 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 10:57:26,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 10:57:26,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 10:57:26,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 10:57:26,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:57:26" (1/1) ... [2021-08-29 10:57:26,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@674f46b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:57:26, skipping insertion in model container [2021-08-29 10:57:26,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:57:26" (1/1) ... [2021-08-29 10:57:26,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 10:57:26,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 10:57:26,395 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/id_build.i[893,906] [2021-08-29 10:57:26,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 10:57:26,410 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 10:57:26,441 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/id_build.i[893,906] [2021-08-29 10:57:26,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 10:57:27,535 INFO L208 MainTranslator]: Completed translation [2021-08-29 10:57:27,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:57:27 WrapperNode [2021-08-29 10:57:27,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 10:57:27,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 10:57:27,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 10:57:27,541 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 10:57:27,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:57:27" (1/1) ... [2021-08-29 10:57:27,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:57:27" (1/1) ... [2021-08-29 10:57:27,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 10:57:27,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 10:57:27,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 10:57:27,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 10:57:27,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:57:27" (1/1) ... [2021-08-29 10:57:27,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:57:27" (1/1) ... [2021-08-29 10:57:27,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:57:27" (1/1) ... [2021-08-29 10:57:27,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:57:27" (1/1) ... [2021-08-29 10:57:27,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:57:27" (1/1) ... [2021-08-29 10:57:27,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:57:27" (1/1) ... [2021-08-29 10:57:27,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:57:27" (1/1) ... [2021-08-29 10:57:27,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 10:57:27,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 10:57:27,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 10:57:27,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 10:57:27,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:57:27" (1/1) ... [2021-08-29 10:57:27,596 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 10:57:27,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 10:57:27,617 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 10:57:27,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 10:57:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 10:57:27,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 10:57:27,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 10:57:27,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 10:57:27,750 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 10:57:27,751 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-08-29 10:57:27,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:57:27 BoogieIcfgContainer [2021-08-29 10:57:27,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 10:57:27,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 10:57:27,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 10:57:27,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 10:57:27,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:57:26" (1/3) ... [2021-08-29 10:57:27,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a547ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:57:27, skipping insertion in model container [2021-08-29 10:57:27,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:57:27" (2/3) ... [2021-08-29 10:57:27,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a547ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:57:27, skipping insertion in model container [2021-08-29 10:57:27,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:57:27" (3/3) ... [2021-08-29 10:57:27,759 INFO L111 eAbstractionObserver]: Analyzing ICFG id_build.i [2021-08-29 10:57:27,763 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 10:57:27,763 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-29 10:57:27,799 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 10:57:27,804 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 10:57:27,804 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-29 10:57:27,835 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:57:27,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-29 10:57:27,846 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 10:57:27,847 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-29 10:57:27,847 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 10:57:27,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 10:57:27,865 INFO L82 PathProgramCache]: Analyzing trace with hash 889666605, now seen corresponding path program 1 times [2021-08-29 10:57:27,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 10:57:27,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057417878] [2021-08-29 10:57:27,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 10:57:27,873 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 10:57:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 10:57:28,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 10:57:28,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 10:57:28,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057417878] [2021-08-29 10:57:28,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057417878] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 10:57:28,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 10:57:28,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 10:57:28,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602421490] [2021-08-29 10:57:28,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 10:57:28,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 10:57:28,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 10:57:28,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 10:57:28,109 INFO L87 Difference]: Start difference. First operand has 17 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:57:28,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 10:57:28,216 INFO L93 Difference]: Finished difference Result 37 states and 50 transitions. [2021-08-29 10:57:28,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 10:57:28,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-08-29 10:57:28,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 10:57:28,225 INFO L225 Difference]: With dead ends: 37 [2021-08-29 10:57:28,225 INFO L226 Difference]: Without dead ends: 14 [2021-08-29 10:57:28,227 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.35ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 10:57:28,230 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.05ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74.48ms IncrementalHoareTripleChecker+Time [2021-08-29 10:57:28,231 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 51 Unknown, 0 Unchecked, 1.05ms Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 74.48ms Time] [2021-08-29 10:57:28,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-08-29 10:57:28,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 11. [2021-08-29 10:57:28,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:57:28,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-08-29 10:57:28,256 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 6 [2021-08-29 10:57:28,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 10:57:28,256 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-08-29 10:57:28,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:57:28,257 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-08-29 10:57:28,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 10:57:28,257 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 10:57:28,257 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 10:57:28,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 10:57:28,258 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 10:57:28,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 10:57:28,259 INFO L82 PathProgramCache]: Analyzing trace with hash 271271248, now seen corresponding path program 1 times [2021-08-29 10:57:28,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 10:57:28,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870180755] [2021-08-29 10:57:28,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 10:57:28,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 10:57:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 10:57:28,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 10:57:28,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 10:57:28,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870180755] [2021-08-29 10:57:28,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870180755] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 10:57:28,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 10:57:28,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 10:57:28,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621338323] [2021-08-29 10:57:28,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 10:57:28,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 10:57:28,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 10:57:28,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 10:57:28,309 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:57:28,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 10:57:28,341 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2021-08-29 10:57:28,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 10:57:28,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-29 10:57:28,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 10:57:28,342 INFO L225 Difference]: With dead ends: 14 [2021-08-29 10:57:28,343 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 10:57:28,343 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.25ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 10:57:28,344 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.40ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.21ms IncrementalHoareTripleChecker+Time [2021-08-29 10:57:28,345 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 0 Invalid, 26 Unknown, 0 Unchecked, 0.40ms Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 22.21ms Time] [2021-08-29 10:57:28,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 10:57:28,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 10:57:28,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:57:28,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 10:57:28,347 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-08-29 10:57:28,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 10:57:28,347 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 10:57:28,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:57:28,348 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 10:57:28,348 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 10:57:28,350 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-08-29 10:57:28,350 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-08-29 10:57:28,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 10:57:28,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 10:57:28,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 10:57:28,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 10:57:28,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 10:57:28,363 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 10:57:28,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 10:57:28,386 INFO L861 garLoopResultBuilder]: At program point L33(lines 24 34) the Hoare annotation is: true [2021-08-29 10:57:28,387 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 10:57:28,387 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-08-29 10:57:28,387 INFO L858 garLoopResultBuilder]: For program point L27-2(lines 27 32) no Hoare annotation was computed. [2021-08-29 10:57:28,387 INFO L854 garLoopResultBuilder]: At program point L27-3(lines 27 32) the Hoare annotation is: (< 0 (+ ULTIMATE.start_main_~i~0 1)) [2021-08-29 10:57:28,387 INFO L858 garLoopResultBuilder]: For program point L27-4(lines 27 32) no Hoare annotation was computed. [2021-08-29 10:57:28,388 INFO L858 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-08-29 10:57:28,388 INFO L858 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-08-29 10:57:28,388 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 10:57:28,388 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 10:57:28,388 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 10:57:28,388 INFO L854 garLoopResultBuilder]: At program point L28-2(lines 28 31) the Hoare annotation is: (and (< 0 (+ ULTIMATE.start_main_~i~0 1)) (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~nlen~0)) [2021-08-29 10:57:28,389 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-08-29 10:57:28,389 INFO L858 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-08-29 10:57:28,389 INFO L854 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (and (< 0 (+ ULTIMATE.start_main_~i~0 1)) (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~nlen~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-08-29 10:57:28,389 INFO L858 garLoopResultBuilder]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2021-08-29 10:57:28,390 INFO L854 garLoopResultBuilder]: At program point L18-5(lines 1 34) the Hoare annotation is: (and (< 0 (+ ULTIMATE.start_main_~i~0 1)) (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~nlen~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-08-29 10:57:28,393 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 10:57:28,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:57:28 BoogieIcfgContainer [2021-08-29 10:57:28,412 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 10:57:28,414 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 10:57:28,414 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 10:57:28,415 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 10:57:28,415 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:57:27" (3/4) ... [2021-08-29 10:57:28,418 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 10:57:28,426 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-08-29 10:57:28,427 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 10:57:28,427 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 10:57:28,427 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 10:57:28,466 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 10:57:28,466 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 10:57:28,467 INFO L158 Benchmark]: Toolchain (without parser) took 2193.37ms. Allocated memory was 60.8MB in the beginning and 86.0MB in the end (delta: 25.2MB). Free memory was 41.4MB in the beginning and 65.5MB in the end (delta: -24.1MB). Peak memory consumption was 711.4kB. Max. memory is 16.1GB. [2021-08-29 10:57:28,468 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 60.8MB. Free memory was 43.2MB in the beginning and 43.1MB in the end (delta: 48.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 10:57:28,468 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1264.13ms. Allocated memory is still 60.8MB. Free memory was 41.3MB in the beginning and 44.1MB in the end (delta: -2.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 10:57:28,469 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.18ms. Allocated memory is still 60.8MB. Free memory was 44.1MB in the beginning and 42.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 10:57:28,469 INFO L158 Benchmark]: Boogie Preprocessor took 21.58ms. Allocated memory is still 60.8MB. Free memory was 42.7MB in the beginning and 41.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 10:57:28,469 INFO L158 Benchmark]: RCFGBuilder took 167.22ms. Allocated memory is still 60.8MB. Free memory was 41.5MB in the beginning and 33.5MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 10:57:28,470 INFO L158 Benchmark]: TraceAbstraction took 658.85ms. Allocated memory was 60.8MB in the beginning and 86.0MB in the end (delta: 25.2MB). Free memory was 33.0MB in the beginning and 68.1MB in the end (delta: -35.1MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. [2021-08-29 10:57:28,470 INFO L158 Benchmark]: Witness Printer took 52.35ms. Allocated memory is still 86.0MB. Free memory was 68.1MB in the beginning and 65.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 10:57:28,473 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 60.8MB. Free memory was 43.2MB in the beginning and 43.1MB in the end (delta: 48.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1264.13ms. Allocated memory is still 60.8MB. Free memory was 41.3MB in the beginning and 44.1MB in the end (delta: -2.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.18ms. Allocated memory is still 60.8MB. Free memory was 44.1MB in the beginning and 42.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.58ms. Allocated memory is still 60.8MB. Free memory was 42.7MB in the beginning and 41.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 167.22ms. Allocated memory is still 60.8MB. Free memory was 41.5MB in the beginning and 33.5MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 658.85ms. Allocated memory was 60.8MB in the beginning and 86.0MB in the end (delta: 25.2MB). Free memory was 33.0MB in the beginning and 68.1MB in the end (delta: -35.1MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. * Witness Printer took 52.35ms. Allocated memory is still 86.0MB. Free memory was 68.1MB in the beginning and 65.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 596.28ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 21.33ms, AutomataDifference: 201.48ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 34.74ms, InitialAbstractionConstructionTime: 21.57ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 96.69ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 81.70ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 70 IncrementalHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 0 mSDtfsCounter, 70 mSolverCounterSat, 1.44ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.61ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 13.32ms AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 13 NumberOfFragments, 41 HoareAnnotationTreeSize, 5 FomulaSimplifications, 43 FormulaSimplificationTreeSizeReduction, 14.86ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 13.83ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 6.62ms SsaConstructionTime, 34.93ms SatisfiabilityAnalysisTime, 127.45ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (0 < i + 1 && i < nlen) && !(0 == cond) - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (0 < i + 1 && i < nlen) && !(0 == cond) - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 0 < i + 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 0 < i + 1 && i < nlen RESULT: Ultimate proved your program to be correct! [2021-08-29 10:57:28,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...