./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-new/count_by_1_variant.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-new/count_by_1_variant.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 1a2ad7e0b5490d38497860251c3047d8de1153f2 ............................................................................................................................................................................................................................................................................................................................................... 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 11:02:31,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 11:02:31,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 11:02:31,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 11:02:31,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 11:02:31,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 11:02:31,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 11:02:31,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 11:02:31,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 11:02:31,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 11:02:31,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 11:02:31,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 11:02:31,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 11:02:31,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 11:02:31,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 11:02:31,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 11:02:31,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 11:02:31,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 11:02:31,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 11:02:31,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 11:02:31,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 11:02:31,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 11:02:31,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 11:02:31,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 11:02:31,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 11:02:31,721 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 11:02:31,721 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 11:02:31,722 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 11:02:31,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 11:02:31,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 11:02:31,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 11:02:31,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 11:02:31,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 11:02:31,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 11:02:31,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 11:02:31,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 11:02:31,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 11:02:31,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 11:02:31,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 11:02:31,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 11:02:31,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 11:02:31,788 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 11:02:31,820 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 11:02:31,820 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 11:02:31,821 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 11:02:31,821 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 11:02:31,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 11:02:31,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 11:02:31,824 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 11:02:31,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 11:02:31,824 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 11:02:31,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 11:02:31,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 11:02:31,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 11:02:31,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 11:02:31,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 11:02:31,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 11:02:31,826 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 11:02:31,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 11:02:31,826 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 11:02:31,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 11:02:31,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 11:02:31,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 11:02:31,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 11:02:31,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 11:02:31,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 11:02:31,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 11:02:31,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 11:02:31,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 11:02:31,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 11:02:31,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 11:02:31,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 11:02:31,845 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a2ad7e0b5490d38497860251c3047d8de1153f2 [2021-08-29 11:02:32,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 11:02:32,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 11:02:32,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 11:02:32,176 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 11:02:32,177 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 11:02:32,178 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-new/count_by_1_variant.i [2021-08-29 11:02:32,239 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bc41645b/9a41de3e4a794d72a803060ce0935768/FLAG90788db6f [2021-08-29 11:02:32,675 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 11:02:32,677 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-new/count_by_1_variant.i [2021-08-29 11:02:32,684 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bc41645b/9a41de3e4a794d72a803060ce0935768/FLAG90788db6f [2021-08-29 11:02:33,092 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bc41645b/9a41de3e4a794d72a803060ce0935768 [2021-08-29 11:02:33,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 11:02:33,118 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 11:02:33,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 11:02:33,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 11:02:33,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 11:02:33,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:02:33" (1/1) ... [2021-08-29 11:02:33,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6458c8fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:33, skipping insertion in model container [2021-08-29 11:02:33,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:02:33" (1/1) ... [2021-08-29 11:02:33,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 11:02:33,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 11:02:33,306 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-new/count_by_1_variant.i[891,904] [2021-08-29 11:02:33,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 11:02:33,333 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 11:02:33,380 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-new/count_by_1_variant.i[891,904] [2021-08-29 11:02:33,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 11:02:33,401 INFO L208 MainTranslator]: Completed translation [2021-08-29 11:02:33,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:33 WrapperNode [2021-08-29 11:02:33,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 11:02:33,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 11:02:33,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 11:02:33,404 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 11:02:33,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:33" (1/1) ... [2021-08-29 11:02:33,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:33" (1/1) ... [2021-08-29 11:02:33,427 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 11:02:33,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 11:02:33,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 11:02:33,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 11:02:33,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:33" (1/1) ... [2021-08-29 11:02:33,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:33" (1/1) ... [2021-08-29 11:02:33,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:33" (1/1) ... [2021-08-29 11:02:33,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:33" (1/1) ... [2021-08-29 11:02:33,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:33" (1/1) ... [2021-08-29 11:02:33,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:33" (1/1) ... [2021-08-29 11:02:33,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:33" (1/1) ... [2021-08-29 11:02:33,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 11:02:33,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 11:02:33,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 11:02:33,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 11:02:33,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:33" (1/1) ... [2021-08-29 11:02:33,457 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 11:02:33,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:02:33,511 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 11:02:33,581 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 11:02:33,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 11:02:33,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 11:02:33,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 11:02:33,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 11:02:33,716 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 11:02:33,717 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-29 11:02:33,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:02:33 BoogieIcfgContainer [2021-08-29 11:02:33,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 11:02:33,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 11:02:33,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 11:02:33,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 11:02:33,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 11:02:33" (1/3) ... [2021-08-29 11:02:33,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e8a577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:02:33, skipping insertion in model container [2021-08-29 11:02:33,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:33" (2/3) ... [2021-08-29 11:02:33,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e8a577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:02:33, skipping insertion in model container [2021-08-29 11:02:33,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:02:33" (3/3) ... [2021-08-29 11:02:33,725 INFO L111 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i [2021-08-29 11:02:33,729 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 11:02:33,730 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 11:02:33,760 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 11:02:33,767 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 11:02:33,768 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 11:02:33,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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 11:02:33,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-29 11:02:33,793 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:02:33,793 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-29 11:02:33,794 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:02:33,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:02:33,800 INFO L82 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2021-08-29 11:02:33,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:02:33,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762491166] [2021-08-29 11:02:33,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:02:33,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:02:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:02:34,031 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 11:02:34,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:02:34,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762491166] [2021-08-29 11:02:34,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762491166] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 11:02:34,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 11:02:34,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 11:02:34,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283744579] [2021-08-29 11:02:34,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 11:02:34,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:02:34,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 11:02:34,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 11:02:34,093 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2021-08-29 11:02:34,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:02:34,182 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2021-08-29 11:02:34,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 11:02:34,185 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 [2021-08-29 11:02:34,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:02:34,189 INFO L225 Difference]: With dead ends: 27 [2021-08-29 11:02:34,189 INFO L226 Difference]: Without dead ends: 10 [2021-08-29 11:02:34,191 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 11:02:34,194 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.77ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.10ms IncrementalHoareTripleChecker+Time [2021-08-29 11:02:34,194 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 34 Unknown, 0 Unchecked, 0.77ms Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 58.10ms Time] [2021-08-29 11:02:34,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-08-29 11:02:34,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2021-08-29 11:02:34,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 11:02:34,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-08-29 11:02:34,216 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2021-08-29 11:02:34,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:02:34,216 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-08-29 11:02:34,216 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) [2021-08-29 11:02:34,217 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-08-29 11:02:34,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 11:02:34,217 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:02:34,217 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-08-29 11:02:34,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 11:02:34,218 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:02:34,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:02:34,220 INFO L82 PathProgramCache]: Analyzing trace with hash 271133217, now seen corresponding path program 1 times [2021-08-29 11:02:34,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:02:34,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129253410] [2021-08-29 11:02:34,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:02:34,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:02:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:02:34,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:02:34,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:02:34,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129253410] [2021-08-29 11:02:34,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129253410] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 11:02:34,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147619871] [2021-08-29 11:02:34,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:02:34,297 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:02:34,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:02:34,330 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 11:02:34,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 11:02:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:02:34,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-29 11:02:34,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 11:02:34,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:02:34,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 11:02:34,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:02:34,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147619871] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 11:02:34,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 11:02:34,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-08-29 11:02:34,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639320256] [2021-08-29 11:02:34,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-29 11:02:34,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:02:34,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-29 11:02:34,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-08-29 11:02:34,478 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 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 11:02:34,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:02:34,530 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-08-29 11:02:34,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 11:02:34,530 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 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 11:02:34,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:02:34,530 INFO L225 Difference]: With dead ends: 14 [2021-08-29 11:02:34,530 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 11:02:34,531 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 59.20ms TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-08-29 11:02:34,532 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.61ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.09ms IncrementalHoareTripleChecker+Time [2021-08-29 11:02:34,532 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 37 Unknown, 0 Unchecked, 0.61ms Time], IncrementalHoareTripleChecker [14 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 19.09ms Time] [2021-08-29 11:02:34,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 11:02:34,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 11:02:34,533 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 11:02:34,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 11:02:34,533 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-08-29 11:02:34,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:02:34,533 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 11:02:34,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 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 11:02:34,534 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 11:02:34,534 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 11:02:34,535 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 11:02:34,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-08-29 11:02:34,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:02:34,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 11:02:34,758 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:02:34,766 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:02:34,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:02:34,799 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 11:02:34,800 INFO L854 garLoopResultBuilder]: At program point L29(lines 24 30) the Hoare annotation is: (<= ULTIMATE.start_main_~i~0 1000000) [2021-08-29 11:02:34,800 INFO L858 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-08-29 11:02:34,800 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 11:02:34,800 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 11:02:34,800 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 11:02:34,800 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-08-29 11:02:34,800 INFO L854 garLoopResultBuilder]: At program point L26-2(lines 26 28) the Hoare annotation is: (or (and (<= ULTIMATE.start_main_~i~0 1000000) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~i~0 0)) [2021-08-29 11:02:34,800 INFO L858 garLoopResultBuilder]: For program point L26-3(lines 26 28) no Hoare annotation was computed. [2021-08-29 11:02:34,801 INFO L858 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-08-29 11:02:34,801 INFO L854 garLoopResultBuilder]: At program point L18-2(lines 1 30) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~i~0 999999)) [2021-08-29 11:02:34,804 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 11:02:34,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 11:02:34 BoogieIcfgContainer [2021-08-29 11:02:34,812 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 11:02:34,812 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 11:02:34,812 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 11:02:34,812 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 11:02:34,813 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:02:33" (3/4) ... [2021-08-29 11:02:34,814 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 11:02:34,820 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-08-29 11:02:34,820 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 11:02:34,820 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 11:02:34,820 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 11:02:34,855 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 11:02:34,856 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 11:02:34,856 INFO L158 Benchmark]: Toolchain (without parser) took 1759.77ms. Allocated memory was 56.6MB in the beginning and 79.7MB in the end (delta: 23.1MB). Free memory was 34.5MB in the beginning and 53.0MB in the end (delta: -18.5MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2021-08-29 11:02:34,856 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 56.6MB. Free memory was 38.4MB in the beginning and 38.4MB in the end (delta: 45.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:02:34,857 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.58ms. Allocated memory was 56.6MB in the beginning and 79.7MB in the end (delta: 23.1MB). Free memory was 34.3MB in the beginning and 62.5MB in the end (delta: -28.2MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2021-08-29 11:02:34,857 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.37ms. Allocated memory is still 79.7MB. Free memory was 62.5MB in the beginning and 61.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:02:34,857 INFO L158 Benchmark]: Boogie Preprocessor took 21.41ms. Allocated memory is still 79.7MB. Free memory was 61.2MB in the beginning and 60.2MB in the end (delta: 964.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:02:34,857 INFO L158 Benchmark]: RCFGBuilder took 268.05ms. Allocated memory is still 79.7MB. Free memory was 60.0MB in the beginning and 52.3MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 11:02:34,858 INFO L158 Benchmark]: TraceAbstraction took 1092.18ms. Allocated memory is still 79.7MB. Free memory was 51.8MB in the beginning and 55.5MB in the end (delta: -3.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:02:34,858 INFO L158 Benchmark]: Witness Printer took 43.29ms. Allocated memory is still 79.7MB. Free memory was 55.5MB in the beginning and 53.0MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 11:02:34,859 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 56.6MB. Free memory was 38.4MB in the beginning and 38.4MB in the end (delta: 45.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 281.58ms. Allocated memory was 56.6MB in the beginning and 79.7MB in the end (delta: 23.1MB). Free memory was 34.3MB in the beginning and 62.5MB in the end (delta: -28.2MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.37ms. Allocated memory is still 79.7MB. Free memory was 62.5MB in the beginning and 61.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.41ms. Allocated memory is still 79.7MB. Free memory was 61.2MB in the beginning and 60.2MB in the end (delta: 964.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 268.05ms. Allocated memory is still 79.7MB. Free memory was 60.0MB in the beginning and 52.3MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1092.18ms. Allocated memory is still 79.7MB. Free memory was 51.8MB in the beginning and 55.5MB in the end (delta: -3.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 43.29ms. Allocated memory is still 79.7MB. Free memory was 55.5MB in the beginning and 53.0MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1044.70ms, OverallIterations: 2, TraceHistogramMax: 2, EmptinessCheckTime: 17.08ms, AutomataDifference: 194.19ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 44.93ms, InitialAbstractionConstructionTime: 8.28ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 77.19ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 62.82ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 54 IncrementalHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 0 mSDtfsCounter, 54 mSolverCounterSat, 1.38ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 82.54ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 11.97ms AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 12 NumberOfFragments, 21 HoareAnnotationTreeSize, 3 FomulaSimplifications, 36 FormulaSimplificationTreeSizeReduction, 14.43ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 57 FormulaSimplificationTreeSizeReductionInter, 25.81ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 10.56ms SsaConstructionTime, 53.15ms SatisfiabilityAnalysisTime, 295.28ms InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 61 SizeOfPredicates, 2 NumberOfNonLiveVariables, 43 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/6 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 1 specifications checked. All of them hold - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 1 <= cond && i <= 999999 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: (i <= 1000000 && 1 <= cond) || i == 0 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: i <= 1000000 RESULT: Ultimate proved your program to be correct! [2021-08-29 11:02:34,886 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...