./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_90b15a70-7f53-424b-a5b0-63ea1e25f1e2/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_90b15a70-7f53-424b-a5b0-63ea1e25f1e2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_90b15a70-7f53-424b-a5b0-63ea1e25f1e2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_90b15a70-7f53-424b-a5b0-63ea1e25f1e2/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i -s /tmp/vcloud-vcloud-master/worker/run_dir_90b15a70-7f53-424b-a5b0-63ea1e25f1e2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_90b15a70-7f53-424b-a5b0-63ea1e25f1e2/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dc958b9ca44e6df037a80498d8cbf6f2fc13bb26 ......................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:05:37,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:05:37,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:05:37,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:05:37,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:05:37,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:05:37,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:05:37,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:05:37,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:05:37,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:05:37,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:05:37,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:05:37,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:05:37,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:05:37,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:05:37,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:05:37,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:05:37,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:05:37,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:05:37,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:05:37,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:05:37,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:05:37,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:05:37,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:05:37,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:05:37,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:05:37,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:05:37,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:05:37,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:05:37,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:05:37,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:05:37,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:05:37,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:05:37,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:05:37,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:05:37,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:05:37,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:05:37,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:05:37,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:05:37,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:05:37,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:05:37,284 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_90b15a70-7f53-424b-a5b0-63ea1e25f1e2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:05:37,330 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:05:37,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:05:37,332 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:05:37,332 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:05:37,333 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:05:37,333 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:05:37,333 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:05:37,333 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:05:37,334 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:05:37,334 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:05:37,335 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:05:37,335 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:05:37,335 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:05:37,336 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:05:37,336 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:05:37,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:05:37,337 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:05:37,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:05:37,337 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:05:37,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:05:37,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:05:37,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:05:37,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:05:37,338 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:05:37,338 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:05:37,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:05:37,339 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:05:37,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:05:37,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:05:37,340 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:05:37,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:05:37,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:37,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:05:37,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:05:37,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:05:37,341 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:05:37,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:05:37,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:05:37,342 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:05:37,342 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:05:37,342 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_90b15a70-7f53-424b-a5b0-63ea1e25f1e2/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_90b15a70-7f53-424b-a5b0-63ea1e25f1e2/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc958b9ca44e6df037a80498d8cbf6f2fc13bb26 [2020-11-22 13:05:37,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:05:37,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:05:37,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:05:37,651 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:05:37,652 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:05:37,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_90b15a70-7f53-424b-a5b0-63ea1e25f1e2/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i [2020-11-22 13:05:37,719 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_90b15a70-7f53-424b-a5b0-63ea1e25f1e2/bin/utaipan/data/bdd63a0a1/9264be46a9f24b5bb4499a07095dac8e/FLAGeb738a44c [2020-11-22 13:05:38,135 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:05:38,138 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_90b15a70-7f53-424b-a5b0-63ea1e25f1e2/sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i [2020-11-22 13:05:38,143 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_90b15a70-7f53-424b-a5b0-63ea1e25f1e2/bin/utaipan/data/bdd63a0a1/9264be46a9f24b5bb4499a07095dac8e/FLAGeb738a44c [2020-11-22 13:05:38,544 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_90b15a70-7f53-424b-a5b0-63ea1e25f1e2/bin/utaipan/data/bdd63a0a1/9264be46a9f24b5bb4499a07095dac8e [2020-11-22 13:05:38,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:05:38,548 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:05:38,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:38,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:05:38,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:05:38,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:38" (1/1) ... [2020-11-22 13:05:38,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@155c13cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:38, skipping insertion in model container [2020-11-22 13:05:38,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:38" (1/1) ... [2020-11-22 13:05:38,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:05:38,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:05:38,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:38,775 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:05:38,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:38,821 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:05:38,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:38 WrapperNode [2020-11-22 13:05:38,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:38,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:38,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:05:38,826 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:05:38,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:38" (1/1) ... [2020-11-22 13:05:38,843 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:38" (1/1) ... [2020-11-22 13:05:38,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:38,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:05:38,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:05:38,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:05:38,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:38" (1/1) ... [2020-11-22 13:05:38,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:38" (1/1) ... [2020-11-22 13:05:38,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:38" (1/1) ... [2020-11-22 13:05:38,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:38" (1/1) ... [2020-11-22 13:05:38,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:38" (1/1) ... [2020-11-22 13:05:38,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:38" (1/1) ... [2020-11-22 13:05:38,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:38" (1/1) ... [2020-11-22 13:05:38,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:05:38,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:05:38,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:05:38,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:05:38,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_90b15a70-7f53-424b-a5b0-63ea1e25f1e2/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:38,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:05:38,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:05:38,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:05:38,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:05:39,331 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:05:39,331 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 13:05:39,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:39 BoogieIcfgContainer [2020-11-22 13:05:39,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:05:39,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:05:39,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:05:39,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:05:39,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:05:38" (1/3) ... [2020-11-22 13:05:39,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e5fa3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:39, skipping insertion in model container [2020-11-22 13:05:39,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:38" (2/3) ... [2020-11-22 13:05:39,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e5fa3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:39, skipping insertion in model container [2020-11-22 13:05:39,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:39" (3/3) ... [2020-11-22 13:05:39,349 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark05_conjunctive.i [2020-11-22 13:05:39,361 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:05:39,365 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:05:39,379 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:05:39,420 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:05:39,421 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:05:39,421 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:05:39,421 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:05:39,421 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:05:39,421 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:05:39,422 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:05:39,422 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:05:39,440 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-11-22 13:05:39,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 13:05:39,448 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:39,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 13:05:39,449 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:39,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:39,455 INFO L82 PathProgramCache]: Analyzing trace with hash -2111168665, now seen corresponding path program 1 times [2020-11-22 13:05:39,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:39,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793469226] [2020-11-22 13:05:39,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:39,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:39,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793469226] [2020-11-22 13:05:39,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:39,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:05:39,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347382375] [2020-11-22 13:05:39,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:39,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:39,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:39,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:39,713 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2020-11-22 13:05:39,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:39,784 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2020-11-22 13:05:39,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:39,787 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-22 13:05:39,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:39,812 INFO L225 Difference]: With dead ends: 18 [2020-11-22 13:05:39,813 INFO L226 Difference]: Without dead ends: 8 [2020-11-22 13:05:39,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:39,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-22 13:05:39,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-22 13:05:39,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-22 13:05:39,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-22 13:05:39,867 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-11-22 13:05:39,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:39,868 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-11-22 13:05:39,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:39,869 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-22 13:05:39,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 13:05:39,869 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:39,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:39,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:05:39,870 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:39,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:39,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1022945407, now seen corresponding path program 1 times [2020-11-22 13:05:39,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:39,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878873259] [2020-11-22 13:05:39,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:40,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:40,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878873259] [2020-11-22 13:05:40,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347941007] [2020-11-22 13:05:40,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_90b15a70-7f53-424b-a5b0-63ea1e25f1e2/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:05:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:40,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-22 13:05:40,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:40,220 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 3, 1] term [2020-11-22 13:05:40,220 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-22 13:05:40,293 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:40,299 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:40,304 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:40,307 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-22 13:05:40,320 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-22 13:05:40,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:40,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:40,355 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:05:40,382 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-22 13:05:40,383 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:05:40,385 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-11-22 13:05:40,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:40,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2003588222] [2020-11-22 13:05:40,519 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-11-22 13:05:40,519 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 13:05:40,524 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 13:05:40,534 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 13:05:40,534 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 13:05:40,842 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 13:05:40,960 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-11-22 13:05:41,109 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-11-22 13:05:41,304 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:05:41,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-22 13:05:41,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2020-11-22 13:05:41,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603855177] [2020-11-22 13:05:41,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-22 13:05:41,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:41,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-22 13:05:41,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-22 13:05:41,307 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 8 states. [2020-11-22 13:05:41,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:41,360 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2020-11-22 13:05:41,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:05:41,361 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2020-11-22 13:05:41,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:41,361 INFO L225 Difference]: With dead ends: 8 [2020-11-22 13:05:41,361 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:05:41,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-11-22 13:05:41,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:05:41,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:05:41,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:05:41,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:05:41,363 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-11-22 13:05:41,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:41,364 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:05:41,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-22 13:05:41,364 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:05:41,364 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:05:41,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-22 13:05:41,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:05:41,622 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:05:41,622 INFO L277 CegarLoopResult]: At program point L29(lines 19 30) the Hoare annotation is: true [2020-11-22 13:05:41,622 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-11-22 13:05:41,622 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-11-22 13:05:41,623 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-11-22 13:05:41,623 INFO L274 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-11-22 13:05:41,623 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:05:41,623 INFO L270 CegarLoopResult]: At program point L26-2(lines 24 27) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0))) (or (and .cse0 (<= (+ ULTIMATE.start_main_~y~0 1) ULTIMATE.start_main_~n~0)) (and (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~n~0) (< ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~x~0 1)) .cse0))) [2020-11-22 13:05:41,623 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2020-11-22 13:05:41,623 INFO L274 CegarLoopResult]: For program point L14(lines 14 18) no Hoare annotation was computed. [2020-11-22 13:05:41,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:05:41 BoogieIcfgContainer [2020-11-22 13:05:41,643 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:05:41,643 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:05:41,644 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:05:41,644 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:05:41,645 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:39" (3/4) ... [2020-11-22 13:05:41,647 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:05:41,655 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-22 13:05:41,656 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-22 13:05:41,656 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:05:41,656 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:05:41,695 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_90b15a70-7f53-424b-a5b0-63ea1e25f1e2/bin/utaipan/witness.graphml [2020-11-22 13:05:41,695 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:05:41,696 INFO L168 Benchmark]: Toolchain (without parser) took 3148.09 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 77.0 MB in the beginning and 60.0 MB in the end (delta: 17.0 MB). Peak memory consumption was 36.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:41,697 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 102.8 MB. Free memory is still 59.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:41,698 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.93 ms. Allocated memory is still 102.8 MB. Free memory was 76.8 MB in the beginning and 80.0 MB in the end (delta: -3.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:41,709 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.06 ms. Allocated memory is still 102.8 MB. Free memory was 80.0 MB in the beginning and 78.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:41,710 INFO L168 Benchmark]: Boogie Preprocessor took 34.44 ms. Allocated memory is still 102.8 MB. Free memory was 78.4 MB in the beginning and 77.5 MB in the end (delta: 959.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:41,710 INFO L168 Benchmark]: RCFGBuilder took 431.33 ms. Allocated memory is still 102.8 MB. Free memory was 77.5 MB in the beginning and 62.5 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:41,711 INFO L168 Benchmark]: TraceAbstraction took 2303.42 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 62.1 MB in the beginning and 63.0 MB in the end (delta: -831.1 kB). Peak memory consumption was 23.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:41,712 INFO L168 Benchmark]: Witness Printer took 52.21 ms. Allocated memory is still 123.7 MB. Free memory was 63.0 MB in the beginning and 60.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:41,716 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 102.8 MB. Free memory is still 59.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 274.93 ms. Allocated memory is still 102.8 MB. Free memory was 76.8 MB in the beginning and 80.0 MB in the end (delta: -3.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.06 ms. Allocated memory is still 102.8 MB. Free memory was 80.0 MB in the beginning and 78.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.44 ms. Allocated memory is still 102.8 MB. Free memory was 78.4 MB in the beginning and 77.5 MB in the end (delta: 959.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 431.33 ms. Allocated memory is still 102.8 MB. Free memory was 77.5 MB in the beginning and 62.5 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2303.42 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 62.1 MB in the beginning and 63.0 MB in the end (delta: -831.1 kB). Peak memory consumption was 23.4 MB. Max. memory is 16.1 GB. * Witness Printer took 52.21 ms. Allocated memory is still 123.7 MB. Free memory was 63.0 MB in the beginning and 60.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (x <= y && y + 1 <= n) || ((y <= n && y < x + 1) && x <= y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 2 SDslu, 10 SDs, 0 SdLazy, 16 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 23 HoareAnnotationTreeSize, 2 FomulaSimplifications, 14 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 771 SizeOfPredicates, 10 NumberOfNonLiveVariables, 47 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 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 correct! Received shutdown request...