./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Addition02.c --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/recursive/Addition02.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 9c0bb97f0ddc8ff8c6b996d7f7598b56ed37dc2a ..................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 16:17:35,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 16:17:35,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 16:17:35,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 16:17:35,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 16:17:35,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 16:17:35,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 16:17:35,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 16:17:35,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 16:17:35,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 16:17:35,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 16:17:35,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 16:17:35,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 16:17:35,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 16:17:35,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 16:17:35,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 16:17:35,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 16:17:35,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 16:17:35,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 16:17:35,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 16:17:35,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 16:17:35,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 16:17:35,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 16:17:35,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 16:17:35,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 16:17:35,744 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 16:17:35,745 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 16:17:35,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 16:17:35,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 16:17:35,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 16:17:35,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 16:17:35,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 16:17:35,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 16:17:35,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 16:17:35,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 16:17:35,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 16:17:35,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 16:17:35,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 16:17:35,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 16:17:35,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 16:17:35,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 16:17:35,760 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 16:17:35,796 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 16:17:35,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 16:17:35,797 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 16:17:35,797 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 16:17:35,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 16:17:35,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 16:17:35,800 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 16:17:35,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 16:17:35,800 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 16:17:35,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 16:17:35,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 16:17:35,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 16:17:35,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 16:17:35,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 16:17:35,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 16:17:35,802 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 16:17:35,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 16:17:35,803 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 16:17:35,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 16:17:35,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 16:17:35,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 16:17:35,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 16:17:35,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 16:17:35,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 16:17:35,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 16:17:35,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 16:17:35,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 16:17:35,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 16:17:35,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 16:17:35,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 16:17:35,815 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c0bb97f0ddc8ff8c6b996d7f7598b56ed37dc2a [2021-08-29 16:17:36,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 16:17:36,177 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 16:17:36,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 16:17:36,181 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 16:17:36,182 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 16:17:36,183 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Addition02.c [2021-08-29 16:17:36,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/652e583ee/8036192537854977b373683810285bd7/FLAG96971f440 [2021-08-29 16:17:36,666 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 16:17:36,667 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Addition02.c [2021-08-29 16:17:36,673 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/652e583ee/8036192537854977b373683810285bd7/FLAG96971f440 [2021-08-29 16:17:37,073 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/652e583ee/8036192537854977b373683810285bd7 [2021-08-29 16:17:37,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 16:17:37,078 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 16:17:37,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 16:17:37,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 16:17:37,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 16:17:37,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 04:17:37" (1/1) ... [2021-08-29 16:17:37,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@513aa951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:17:37, skipping insertion in model container [2021-08-29 16:17:37,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 04:17:37" (1/1) ... [2021-08-29 16:17:37,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 16:17:37,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 16:17:37,231 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/recursive/Addition02.c[1124,1137] [2021-08-29 16:17:37,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 16:17:37,242 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 16:17:37,257 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/recursive/Addition02.c[1124,1137] [2021-08-29 16:17:37,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 16:17:37,268 INFO L208 MainTranslator]: Completed translation [2021-08-29 16:17:37,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:17:37 WrapperNode [2021-08-29 16:17:37,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 16:17:37,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 16:17:37,270 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 16:17:37,270 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 16:17:37,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:17:37" (1/1) ... [2021-08-29 16:17:37,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:17:37" (1/1) ... [2021-08-29 16:17:37,335 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 16:17:37,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 16:17:37,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 16:17:37,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 16:17:37,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:17:37" (1/1) ... [2021-08-29 16:17:37,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:17:37" (1/1) ... [2021-08-29 16:17:37,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:17:37" (1/1) ... [2021-08-29 16:17:37,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:17:37" (1/1) ... [2021-08-29 16:17:37,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:17:37" (1/1) ... [2021-08-29 16:17:37,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:17:37" (1/1) ... [2021-08-29 16:17:37,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:17:37" (1/1) ... [2021-08-29 16:17:37,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 16:17:37,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 16:17:37,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 16:17:37,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 16:17:37,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:17:37" (1/1) ... [2021-08-29 16:17:37,376 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 16:17:37,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 16:17:37,402 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 16:17:37,431 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 16:17:37,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 16:17:37,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 16:17:37,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 16:17:37,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 16:17:37,448 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2021-08-29 16:17:37,448 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2021-08-29 16:17:37,612 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 16:17:37,612 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-29 16:17:37,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 04:17:37 BoogieIcfgContainer [2021-08-29 16:17:37,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 16:17:37,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 16:17:37,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 16:17:37,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 16:17:37,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 04:17:37" (1/3) ... [2021-08-29 16:17:37,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f78c5c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 04:17:37, skipping insertion in model container [2021-08-29 16:17:37,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:17:37" (2/3) ... [2021-08-29 16:17:37,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f78c5c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 04:17:37, skipping insertion in model container [2021-08-29 16:17:37,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 04:17:37" (3/3) ... [2021-08-29 16:17:37,621 INFO L111 eAbstractionObserver]: Analyzing ICFG Addition02.c [2021-08-29 16:17:37,626 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 16:17:37,626 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 16:17:37,673 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 16:17:37,679 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 16:17:37,679 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 16:17:37,693 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-29 16:17:37,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 16:17:37,697 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 16:17:37,698 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 16:17:37,698 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 16:17:37,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 16:17:37,703 INFO L82 PathProgramCache]: Analyzing trace with hash 663264039, now seen corresponding path program 1 times [2021-08-29 16:17:37,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 16:17:37,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608919580] [2021-08-29 16:17:37,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 16:17:37,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 16:17:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 16:17:38,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-08-29 16:17:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 16:17:38,126 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 16:17:38,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 16:17:38,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608919580] [2021-08-29 16:17:38,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608919580] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 16:17:38,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 16:17:38,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-29 16:17:38,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849573632] [2021-08-29 16:17:38,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 16:17:38,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 16:17:38,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 16:17:38,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-29 16:17:38,168 INFO L87 Difference]: Start difference. First operand has 22 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-29 16:17:38,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 16:17:38,405 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2021-08-29 16:17:38,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 16:17:38,408 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-08-29 16:17:38,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 16:17:38,415 INFO L225 Difference]: With dead ends: 34 [2021-08-29 16:17:38,415 INFO L226 Difference]: Without dead ends: 21 [2021-08-29 16:17:38,418 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 91.36ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-08-29 16:17:38,421 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 20 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 138.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.30ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 172.92ms IncrementalHoareTripleChecker+Time [2021-08-29 16:17:38,422 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 6 Invalid, 152 Unknown, 0 Unchecked, 4.30ms Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 172.92ms Time] [2021-08-29 16:17:38,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-08-29 16:17:38,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-08-29 16:17:38,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-29 16:17:38,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2021-08-29 16:17:38,456 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 12 [2021-08-29 16:17:38,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 16:17:38,456 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2021-08-29 16:17:38,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-29 16:17:38,457 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2021-08-29 16:17:38,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 16:17:38,458 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 16:17:38,458 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 16:17:38,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 16:17:38,459 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 16:17:38,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 16:17:38,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1508496640, now seen corresponding path program 1 times [2021-08-29 16:17:38,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 16:17:38,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593738818] [2021-08-29 16:17:38,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 16:17:38,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 16:17:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 16:17:38,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-08-29 16:17:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 16:17:38,506 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 16:17:38,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 16:17:38,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593738818] [2021-08-29 16:17:38,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593738818] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 16:17:38,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 16:17:38,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 16:17:38,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176186968] [2021-08-29 16:17:38,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 16:17:38,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 16:17:38,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 16:17:38,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 16:17:38,510 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-29 16:17:38,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 16:17:38,552 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2021-08-29 16:17:38,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 16:17:38,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-08-29 16:17:38,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 16:17:38,553 INFO L225 Difference]: With dead ends: 31 [2021-08-29 16:17:38,553 INFO L226 Difference]: Without dead ends: 23 [2021-08-29 16:17:38,554 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.39ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 16:17:38,555 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.85ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.27ms IncrementalHoareTripleChecker+Time [2021-08-29 16:17:38,556 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 16 Invalid, 36 Unknown, 0 Unchecked, 0.85ms Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 35.27ms Time] [2021-08-29 16:17:38,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-29 16:17:38,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2021-08-29 16:17:38,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-29 16:17:38,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-08-29 16:17:38,562 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2021-08-29 16:17:38,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 16:17:38,562 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-08-29 16:17:38,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-29 16:17:38,563 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-08-29 16:17:38,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-29 16:17:38,564 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 16:17:38,564 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 16:17:38,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 16:17:38,565 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 16:17:38,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 16:17:38,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1330690599, now seen corresponding path program 1 times [2021-08-29 16:17:38,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 16:17:38,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862223981] [2021-08-29 16:17:38,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 16:17:38,566 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 16:17:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 16:17:38,589 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 16:17:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 16:17:38,624 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 16:17:38,625 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 16:17:38,626 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 16:17:38,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 16:17:38,632 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 16:17:38,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 04:17:38 BoogieIcfgContainer [2021-08-29 16:17:38,654 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 16:17:38,655 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 16:17:38,655 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 16:17:38,655 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 16:17:38,656 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 04:17:37" (3/4) ... [2021-08-29 16:17:38,657 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 16:17:38,689 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 16:17:38,689 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 16:17:38,690 INFO L158 Benchmark]: Toolchain (without parser) took 1612.46ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 43.8MB in the beginning and 52.9MB in the end (delta: -9.0MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2021-08-29 16:17:38,690 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 62.9MB. Free memory was 45.0MB in the beginning and 44.9MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 16:17:38,691 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.71ms. Allocated memory is still 62.9MB. Free memory was 43.7MB in the beginning and 34.4MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 16:17:38,691 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.42ms. Allocated memory is still 62.9MB. Free memory was 34.3MB in the beginning and 46.6MB in the end (delta: -12.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 16:17:38,692 INFO L158 Benchmark]: Boogie Preprocessor took 31.27ms. Allocated memory is still 62.9MB. Free memory was 46.6MB in the beginning and 45.6MB in the end (delta: 986.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 16:17:38,692 INFO L158 Benchmark]: RCFGBuilder took 245.32ms. Allocated memory is still 62.9MB. Free memory was 45.6MB in the beginning and 37.1MB in the end (delta: 8.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-29 16:17:38,692 INFO L158 Benchmark]: TraceAbstraction took 1038.53ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 36.5MB in the beginning and 55.5MB in the end (delta: -19.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 16:17:38,693 INFO L158 Benchmark]: Witness Printer took 34.76ms. Allocated memory is still 77.6MB. Free memory was 55.5MB in the beginning and 52.9MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 16:17:38,694 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 62.9MB. Free memory was 45.0MB in the beginning and 44.9MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 188.71ms. Allocated memory is still 62.9MB. Free memory was 43.7MB in the beginning and 34.4MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.42ms. Allocated memory is still 62.9MB. Free memory was 34.3MB in the beginning and 46.6MB in the end (delta: -12.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.27ms. Allocated memory is still 62.9MB. Free memory was 46.6MB in the beginning and 45.6MB in the end (delta: 986.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 245.32ms. Allocated memory is still 62.9MB. Free memory was 45.6MB in the beginning and 37.1MB in the end (delta: 8.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1038.53ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 36.5MB in the beginning and 55.5MB in the end (delta: -19.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 34.76ms. Allocated memory is still 77.6MB. Free memory was 55.5MB in the beginning and 52.9MB in the end (delta: 2.7MB). 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 - CounterExampleResult [Line: 45]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L29] int m = __VERIFIER_nondet_int(); [L30] COND FALSE !(m < 0 || m > 1073741823) [L35] int n = __VERIFIER_nondet_int(); [L36] COND FALSE !(n < 0 || n > 1073741823) [L41] CALL, EXPR addition(m,n) VAL [\old(m)=0, \old(n)=1] [L16] COND FALSE !(n == 0) VAL [\old(m)=0, \old(n)=1, m=0, n=1] [L19] COND TRUE n > 0 VAL [\old(m)=0, \old(n)=1, m=0, n=1] [L20] CALL, EXPR addition(m+1, n-1) VAL [\old(m)=1, \old(n)=0] [L16] COND TRUE n == 0 [L17] return m; VAL [\old(m)=1, \old(n)=0, \result=1, m=1, n=0] [L20] RET, EXPR addition(m+1, n-1) VAL [\old(m)=0, \old(n)=1, addition(m+1, n-1)=1, m=0, n=1] [L20] return addition(m+1, n-1); [L41] RET, EXPR addition(m,n) [L41] int result = addition(m,n); [L42] COND FALSE !(result == m - n) [L45] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 959.51ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 9.96ms, AutomataDifference: 333.47ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 10.11ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 37 SdHoareTripleChecker+Valid, 208.18ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 160.94ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 67 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 185 IncrementalHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 14 mSDtfsCounter, 185 mSolverCounterSat, 5.15ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 97.76ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 26.84ms AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.38ms SsaConstructionTime, 82.19ms SatisfiabilityAnalysisTime, 336.63ms InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 76 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-08-29 16:17:38,732 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...