./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/while_infinite_loop_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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/loops/while_infinite_loop_2.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 673762d41977d1832da2fc16ea042415bb97af40 ...................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 03:12:26,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 03:12:26,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 03:12:26,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 03:12:26,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 03:12:26,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 03:12:26,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 03:12:26,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 03:12:26,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 03:12:26,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 03:12:26,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 03:12:26,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 03:12:26,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 03:12:26,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 03:12:26,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 03:12:26,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 03:12:26,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 03:12:26,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 03:12:26,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 03:12:26,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 03:12:26,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 03:12:26,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 03:12:26,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 03:12:26,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 03:12:26,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 03:12:26,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 03:12:26,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 03:12:26,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 03:12:26,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 03:12:26,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 03:12:26,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 03:12:26,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 03:12:26,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 03:12:26,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 03:12:26,713 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 03:12:26,713 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 03:12:26,714 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 03:12:26,714 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 03:12:26,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 03:12:26,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 03:12:26,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 03:12:26,719 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 03:12:26,755 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 03:12:26,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 03:12:26,756 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 03:12:26,756 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 03:12:26,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 03:12:26,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 03:12:26,758 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 03:12:26,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 03:12:26,758 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 03:12:26,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 03:12:26,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 03:12:26,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 03:12:26,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 03:12:26,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 03:12:26,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 03:12:26,760 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 03:12:26,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 03:12:26,760 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 03:12:26,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 03:12:26,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 03:12:26,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 03:12:26,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 03:12:26,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 03:12:26,761 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 03:12:26,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 03:12:26,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 03:12:26,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 03:12:26,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 03:12:26,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 03:12:26,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 03:12:26,762 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 673762d41977d1832da2fc16ea042415bb97af40 [2021-08-26 03:12:27,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 03:12:27,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 03:12:27,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 03:12:27,117 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 03:12:27,118 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 03:12:27,119 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/while_infinite_loop_2.c [2021-08-26 03:12:27,191 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16d2cc8d4/c697605ac6d44c6fb91bf0cf3826da41/FLAG6e2f9707e [2021-08-26 03:12:27,508 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 03:12:27,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/while_infinite_loop_2.c [2021-08-26 03:12:27,513 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16d2cc8d4/c697605ac6d44c6fb91bf0cf3826da41/FLAG6e2f9707e [2021-08-26 03:12:27,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16d2cc8d4/c697605ac6d44c6fb91bf0cf3826da41 [2021-08-26 03:12:27,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 03:12:27,927 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 03:12:27,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 03:12:27,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 03:12:27,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 03:12:27,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:12:27" (1/1) ... [2021-08-26 03:12:27,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71192f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:12:27, skipping insertion in model container [2021-08-26 03:12:27,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:12:27" (1/1) ... [2021-08-26 03:12:27,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 03:12:27,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 03:12:28,018 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/loops/while_infinite_loop_2.c[333,346] [2021-08-26 03:12:28,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 03:12:28,027 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 03:12:28,034 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/loops/while_infinite_loop_2.c[333,346] [2021-08-26 03:12:28,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 03:12:28,042 INFO L208 MainTranslator]: Completed translation [2021-08-26 03:12:28,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:12:28 WrapperNode [2021-08-26 03:12:28,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 03:12:28,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 03:12:28,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 03:12:28,044 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 03:12:28,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:12:28" (1/1) ... [2021-08-26 03:12:28,059 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:12:28" (1/1) ... [2021-08-26 03:12:28,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 03:12:28,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 03:12:28,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 03:12:28,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 03:12:28,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:12:28" (1/1) ... [2021-08-26 03:12:28,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:12:28" (1/1) ... [2021-08-26 03:12:28,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:12:28" (1/1) ... [2021-08-26 03:12:28,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:12:28" (1/1) ... [2021-08-26 03:12:28,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:12:28" (1/1) ... [2021-08-26 03:12:28,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:12:28" (1/1) ... [2021-08-26 03:12:28,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:12:28" (1/1) ... [2021-08-26 03:12:28,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 03:12:28,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 03:12:28,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 03:12:28,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 03:12:28,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:12:28" (1/1) ... [2021-08-26 03:12:28,104 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 03:12:28,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:12:28,134 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) [2021-08-26 03:12:28,153 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 [2021-08-26 03:12:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 03:12:28,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 03:12:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 03:12:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 03:12:28,334 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 03:12:28,334 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-08-26 03:12:28,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:12:28 BoogieIcfgContainer [2021-08-26 03:12:28,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 03:12:28,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 03:12:28,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 03:12:28,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 03:12:28,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:12:27" (1/3) ... [2021-08-26 03:12:28,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61989629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:12:28, skipping insertion in model container [2021-08-26 03:12:28,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:12:28" (2/3) ... [2021-08-26 03:12:28,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61989629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:12:28, skipping insertion in model container [2021-08-26 03:12:28,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:12:28" (3/3) ... [2021-08-26 03:12:28,342 INFO L111 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_2.c [2021-08-26 03:12:28,348 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 03:12:28,348 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-26 03:12:28,374 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 03:12:28,380 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 [2021-08-26 03:12:28,380 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-26 03:12:28,389 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 10 states have (on average 1.6) internal successors, (16), 12 states have internal predecessors, (16), 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) [2021-08-26 03:12:28,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-26 03:12:28,392 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:12:28,393 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-26 03:12:28,393 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:12:28,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:12:28,396 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2021-08-26 03:12:28,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:12:28,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238634400] [2021-08-26 03:12:28,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:12:28,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:12:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:12:28,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:12:28,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:12:28,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238634400] [2021-08-26 03:12:28,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238634400] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:12:28,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:12:28,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 03:12:28,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906941020] [2021-08-26 03:12:28,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 03:12:28,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:12:28,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 03:12:28,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 03:12:28,604 INFO L87 Difference]: Start difference. First operand has 13 states, 10 states have (on average 1.6) internal successors, (16), 12 states have internal predecessors, (16), 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 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-08-26 03:12:28,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:12:28,645 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2021-08-26 03:12:28,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 03:12:28,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2021-08-26 03:12:28,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:12:28,650 INFO L225 Difference]: With dead ends: 16 [2021-08-26 03:12:28,650 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 03:12:28,652 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 03:12:28,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 03:12:28,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 03:12:28,666 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) [2021-08-26 03:12:28,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 03:12:28,667 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-08-26 03:12:28,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:12:28,667 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 03:12:28,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-08-26 03:12:28,668 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 03:12:28,668 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 03:12:28,669 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 03:12:28,670 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 03:12:28,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 03:12:28,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 03:12:28,674 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:12:28,677 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:12:28,684 INFO L853 garLoopResultBuilder]: At program point L6-5(lines 1 20) the Hoare annotation is: false [2021-08-26 03:12:28,685 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 03:12:28,685 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-08-26 03:12:28,685 INFO L857 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-08-26 03:12:28,685 INFO L857 garLoopResultBuilder]: For program point L7-1(line 7) no Hoare annotation was computed. [2021-08-26 03:12:28,685 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 03:12:28,685 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 03:12:28,686 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 03:12:28,686 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-08-26 03:12:28,686 INFO L857 garLoopResultBuilder]: For program point L14-2(lines 14 17) no Hoare annotation was computed. [2021-08-26 03:12:28,686 INFO L857 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-08-26 03:12:28,686 INFO L853 garLoopResultBuilder]: At program point L6-2(lines 5 17) the Hoare annotation is: (= ULTIMATE.start_main_~x~0 0) [2021-08-26 03:12:28,686 INFO L857 garLoopResultBuilder]: For program point L6-3(lines 6 8) no Hoare annotation was computed. [2021-08-26 03:12:28,689 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 03:12:28,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 03:12:28 BoogieIcfgContainer [2021-08-26 03:12:28,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 03:12:28,698 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 03:12:28,699 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 03:12:28,699 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 03:12:28,699 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:12:28" (3/4) ... [2021-08-26 03:12:28,701 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 03:12:28,707 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-08-26 03:12:28,707 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 03:12:28,708 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 03:12:28,708 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 03:12:28,728 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 03:12:28,728 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 03:12:28,729 INFO L168 Benchmark]: Toolchain (without parser) took 802.32 ms. Allocated memory is still 71.3 MB. Free memory was 53.4 MB in the beginning and 36.8 MB in the end (delta: 16.6 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. [2021-08-26 03:12:28,730 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 71.3 MB. Free memory is still 51.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 03:12:28,730 INFO L168 Benchmark]: CACSL2BoogieTranslator took 115.57 ms. Allocated memory is still 71.3 MB. Free memory was 53.2 MB in the beginning and 44.2 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-26 03:12:28,731 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.33 ms. Allocated memory is still 71.3 MB. Free memory was 44.0 MB in the beginning and 54.3 MB in the end (delta: -10.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 03:12:28,731 INFO L168 Benchmark]: Boogie Preprocessor took 18.21 ms. Allocated memory is still 71.3 MB. Free memory was 54.3 MB in the beginning and 53.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 03:12:28,731 INFO L168 Benchmark]: RCFGBuilder took 237.39 ms. Allocated memory is still 71.3 MB. Free memory was 53.1 MB in the beginning and 42.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-26 03:12:28,732 INFO L168 Benchmark]: TraceAbstraction took 361.15 ms. Allocated memory is still 71.3 MB. Free memory was 41.7 MB in the beginning and 39.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 3.9 MB. Max. memory is 16.1 GB. [2021-08-26 03:12:28,732 INFO L168 Benchmark]: Witness Printer took 29.67 ms. Allocated memory is still 71.3 MB. Free memory was 39.3 MB in the beginning and 36.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 03:12:28,734 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 71.3 MB. Free memory is still 51.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 115.57 ms. Allocated memory is still 71.3 MB. Free memory was 53.2 MB in the beginning and 44.2 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.33 ms. Allocated memory is still 71.3 MB. Free memory was 44.0 MB in the beginning and 54.3 MB in the end (delta: -10.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.21 ms. Allocated memory is still 71.3 MB. Free memory was 54.3 MB in the beginning and 53.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 237.39 ms. Allocated memory is still 71.3 MB. Free memory was 53.1 MB in the beginning and 42.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 361.15 ms. Allocated memory is still 71.3 MB. Free memory was 41.7 MB in the beginning and 39.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 3.9 MB. Max. memory is 16.1 GB. * Witness Printer took 29.67 ms. Allocated memory is still 71.3 MB. Free memory was 39.3 MB in the beginning and 36.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 7]: 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, 13 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 316.0ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 5.3ms, AutomataDifference: 56.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 13.5ms, InitialAbstractionConstructionTime: 6.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2 SDtfs, 3 SDslu, 3 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 6.0ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 4 HoareAnnotationTreeSize, 2 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 4.8ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 4.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 2.9ms SsaConstructionTime, 18.2ms SatisfiabilityAnalysisTime, 130.4ms InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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: 5]: Loop Invariant Derived loop invariant: x == 0 - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-08-26 03:12:28,761 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...