./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.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_f37023af-fa6b-4871-860c-39249c26767c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f37023af-fa6b-4871-860c-39249c26767c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f37023af-fa6b-4871-860c-39249c26767c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f37023af-fa6b-4871-860c-39249c26767c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f37023af-fa6b-4871-860c-39249c26767c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f37023af-fa6b-4871-860c-39249c26767c/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 d17e00bd44b55018d16a0aa5f90810f5973068e1 ......................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f37023af-fa6b-4871-860c-39249c26767c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f37023af-fa6b-4871-860c-39249c26767c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f37023af-fa6b-4871-860c-39249c26767c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f37023af-fa6b-4871-860c-39249c26767c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f37023af-fa6b-4871-860c-39249c26767c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f37023af-fa6b-4871-860c-39249c26767c/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 d17e00bd44b55018d16a0aa5f90810f5973068e1 .................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:12:14,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:12:14,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:12:14,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:12:14,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:12:14,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:12:14,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:12:14,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:12:14,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:12:14,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:12:14,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:12:14,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:12:14,337 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:12:14,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:12:14,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:12:14,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:12:14,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:12:14,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:12:14,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:12:14,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:12:14,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:12:14,367 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:12:14,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:12:14,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:12:14,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:12:14,381 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:12:14,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:12:14,384 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:12:14,385 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:12:14,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:12:14,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:12:14,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:12:14,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:12:14,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:12:14,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:12:14,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:12:14,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:12:14,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:12:14,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:12:14,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:12:14,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:12:14,401 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f37023af-fa6b-4871-860c-39249c26767c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:12:14,443 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:12:14,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:12:14,445 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:12:14,445 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:12:14,445 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:12:14,446 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:12:14,446 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:12:14,446 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:12:14,446 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:12:14,447 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:12:14,448 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:12:14,448 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:12:14,448 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:12:14,449 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:12:14,449 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:12:14,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:12:14,450 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:12:14,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:12:14,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:12:14,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:12:14,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:12:14,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:12:14,451 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:12:14,452 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:12:14,452 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:12:14,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:12:14,452 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:12:14,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:12:14,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:12:14,455 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:12:14,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:12:14,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:12:14,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:12:14,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:12:14,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:12:14,457 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:12:14,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:12:14,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:12:14,457 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:12:14,458 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:12:14,458 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_f37023af-fa6b-4871-860c-39249c26767c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f37023af-fa6b-4871-860c-39249c26767c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d17e00bd44b55018d16a0aa5f90810f5973068e1 [2020-11-30 02:12:14,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:12:14,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:12:14,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:12:14,779 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:12:14,780 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:12:14,781 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f37023af-fa6b-4871-860c-39249c26767c/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i [2020-11-30 02:12:14,849 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f37023af-fa6b-4871-860c-39249c26767c/bin/utaipan/data/57e9f4b79/524321bc816e4dbb96fbc8fcf2227b4a/FLAGae29b5ef8 [2020-11-30 02:12:15,399 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:12:15,400 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f37023af-fa6b-4871-860c-39249c26767c/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i [2020-11-30 02:12:15,414 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f37023af-fa6b-4871-860c-39249c26767c/bin/utaipan/data/57e9f4b79/524321bc816e4dbb96fbc8fcf2227b4a/FLAGae29b5ef8 [2020-11-30 02:12:15,744 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f37023af-fa6b-4871-860c-39249c26767c/bin/utaipan/data/57e9f4b79/524321bc816e4dbb96fbc8fcf2227b4a [2020-11-30 02:12:15,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:12:15,747 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:12:15,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:12:15,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:12:15,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:12:15,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:12:15" (1/1) ... [2020-11-30 02:12:15,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@681fb3d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:12:15, skipping insertion in model container [2020-11-30 02:12:15,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:12:15" (1/1) ... [2020-11-30 02:12:15,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:12:15,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:12:15,995 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:846) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:1690) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:217) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1401) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:706) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1352) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1045) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1423) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3209) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2292) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:579) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-30 02:12:16,001 INFO L168 Benchmark]: Toolchain (without parser) took 252.10 ms. Allocated memory is still 96.5 MB. Free memory was 64.9 MB in the beginning and 76.3 MB in the end (delta: -11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:12:16,003 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 79.7 MB. Free memory was 61.1 MB in the beginning and 61.0 MB in the end (delta: 21.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:12:16,010 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.49 ms. Allocated memory is still 96.5 MB. Free memory was 64.5 MB in the beginning and 76.3 MB in the end (delta: -11.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:12:16,014 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 79.7 MB. Free memory was 61.1 MB in the beginning and 61.0 MB in the end (delta: 21.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 245.49 ms. Allocated memory is still 96.5 MB. Free memory was 64.5 MB in the beginning and 76.3 MB in the end (delta: -11.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:846) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:12:18,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:12:18,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:12:18,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:12:18,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:12:18,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:12:18,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:12:18,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:12:18,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:12:18,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:12:18,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:12:18,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:12:18,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:12:18,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:12:18,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:12:18,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:12:18,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:12:18,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:12:18,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:12:18,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:12:18,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:12:18,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:12:18,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:12:18,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:12:18,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:12:18,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:12:18,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:12:18,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:12:18,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:12:18,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:12:18,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:12:18,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:12:18,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:12:18,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:12:18,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:12:18,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:12:18,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:12:18,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:12:18,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:12:18,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:12:18,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:12:18,457 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f37023af-fa6b-4871-860c-39249c26767c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-30 02:12:18,495 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:12:18,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:12:18,497 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:12:18,498 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:12:18,498 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:12:18,498 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:12:18,499 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:12:18,499 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:12:18,500 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:12:18,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:12:18,502 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:12:18,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:12:18,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:12:18,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:12:18,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:12:18,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:12:18,504 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:12:18,504 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 02:12:18,504 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 02:12:18,505 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:12:18,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:12:18,505 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:12:18,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:12:18,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:12:18,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 02:12:18,506 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:12:18,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:12:18,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:12:18,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:12:18,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:12:18,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:12:18,508 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 02:12:18,508 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 02:12:18,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:12:18,524 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:12:18,524 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:12:18,524 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_f37023af-fa6b-4871-860c-39249c26767c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f37023af-fa6b-4871-860c-39249c26767c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d17e00bd44b55018d16a0aa5f90810f5973068e1 [2020-11-30 02:12:18,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:12:19,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:12:19,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:12:19,038 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:12:19,041 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:12:19,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f37023af-fa6b-4871-860c-39249c26767c/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i [2020-11-30 02:12:19,128 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f37023af-fa6b-4871-860c-39249c26767c/bin/utaipan/data/2a1e70061/7afaa7dcaa6b4f5e9f0288bafbd0710c/FLAGcfdc19550 [2020-11-30 02:12:19,718 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:12:19,718 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f37023af-fa6b-4871-860c-39249c26767c/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i [2020-11-30 02:12:19,727 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f37023af-fa6b-4871-860c-39249c26767c/bin/utaipan/data/2a1e70061/7afaa7dcaa6b4f5e9f0288bafbd0710c/FLAGcfdc19550 [2020-11-30 02:12:20,075 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f37023af-fa6b-4871-860c-39249c26767c/bin/utaipan/data/2a1e70061/7afaa7dcaa6b4f5e9f0288bafbd0710c [2020-11-30 02:12:20,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:12:20,081 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:12:20,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:12:20,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:12:20,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:12:20,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:12:20" (1/1) ... [2020-11-30 02:12:20,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4be6a700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:12:20, skipping insertion in model container [2020-11-30 02:12:20,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:12:20" (1/1) ... [2020-11-30 02:12:20,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:12:20,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:12:20,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:12:20,422 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:12:20,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:12:20,482 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:12:20,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:12:20 WrapperNode [2020-11-30 02:12:20,486 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:12:20,488 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:12:20,488 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:12:20,488 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:12:20,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:12:20" (1/1) ... [2020-11-30 02:12:20,536 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:12:20" (1/1) ... [2020-11-30 02:12:20,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:12:20,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:12:20,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:12:20,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:12:20,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:12:20" (1/1) ... [2020-11-30 02:12:20,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:12:20" (1/1) ... [2020-11-30 02:12:20,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:12:20" (1/1) ... [2020-11-30 02:12:20,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:12:20" (1/1) ... [2020-11-30 02:12:20,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:12:20" (1/1) ... [2020-11-30 02:12:20,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:12:20" (1/1) ... [2020-11-30 02:12:20,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:12:20" (1/1) ... [2020-11-30 02:12:20,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:12:20,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:12:20,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:12:20,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:12:20,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:12:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f37023af-fa6b-4871-860c-39249c26767c/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 [2020-11-30 02:12:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 02:12:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:12:20,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:12:20,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:12:24,085 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:12:24,085 INFO L298 CfgBuilder]: Removed 29 assume(true) statements. [2020-11-30 02:12:24,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:12:24 BoogieIcfgContainer [2020-11-30 02:12:24,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:12:24,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:12:24,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:12:24,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:12:24,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:12:20" (1/3) ... [2020-11-30 02:12:24,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf6c62f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:12:24, skipping insertion in model container [2020-11-30 02:12:24,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:12:20" (2/3) ... [2020-11-30 02:12:24,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf6c62f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:12:24, skipping insertion in model container [2020-11-30 02:12:24,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:12:24" (3/3) ... [2020-11-30 02:12:24,097 INFO L111 eAbstractionObserver]: Analyzing ICFG knuth_valuebound2.i [2020-11-30 02:12:24,110 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:12:24,115 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-30 02:12:24,129 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-30 02:12:24,170 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:12:24,170 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:12:24,170 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:12:24,170 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:12:24,170 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:12:24,170 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:12:24,171 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:12:24,171 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:12:24,184 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-11-30 02:12:24,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 02:12:24,190 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:12:24,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:12:24,191 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:12:24,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:12:24,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1115236137, now seen corresponding path program 1 times [2020-11-30 02:12:24,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:12:24,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206769201] [2020-11-30 02:12:24,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f37023af-fa6b-4871-860c-39249c26767c/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-30 02:12:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:12:24,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 02:12:24,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:12:24,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:12:24,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:12:24,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:12:24,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206769201] [2020-11-30 02:12:24,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:12:24,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 02:12:24,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569384978] [2020-11-30 02:12:24,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 02:12:24,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:12:24,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 02:12:24,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:12:24,817 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2020-11-30 02:12:24,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:12:24,847 INFO L93 Difference]: Finished difference Result 81 states and 114 transitions. [2020-11-30 02:12:24,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:12:24,848 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-11-30 02:12:24,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:12:24,860 INFO L225 Difference]: With dead ends: 81 [2020-11-30 02:12:24,861 INFO L226 Difference]: Without dead ends: 38 [2020-11-30 02:12:24,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:12:24,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-30 02:12:24,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-11-30 02:12:24,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-30 02:12:24,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-11-30 02:12:24,913 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 15 [2020-11-30 02:12:24,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:12:24,914 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-11-30 02:12:24,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 02:12:24,915 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-11-30 02:12:24,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 02:12:24,916 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:12:24,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:12:25,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 02:12:25,124 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:12:25,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:12:25,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1454088159, now seen corresponding path program 1 times [2020-11-30 02:12:25,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:12:25,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063404261] [2020-11-30 02:12:25,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f37023af-fa6b-4871-860c-39249c26767c/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 02:12:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:12:25,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 02:12:25,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:12:25,633 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:12:25,647 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:12:25,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:12:25,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:12:25,677 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:12:25,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:12:25,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063404261] [2020-11-30 02:12:25,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:12:25,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2020-11-30 02:12:25,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635039080] [2020-11-30 02:12:25,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:12:25,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:12:25,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:12:25,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:12:25,729 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 6 states. [2020-11-30 02:12:25,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:12:25,818 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2020-11-30 02:12:25,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:12:25,818 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-30 02:12:25,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:12:25,818 INFO L225 Difference]: With dead ends: 38 [2020-11-30 02:12:25,819 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:12:25,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:12:25,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:12:25,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:12:25,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:12:25,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:12:25,821 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-30 02:12:25,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:12:25,821 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:12:25,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:12:25,821 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:12:25,821 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:12:26,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 02:12:26,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:12:26,101 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 02:12:26,101 INFO L274 CegarLoopResult]: For program point L19(lines 19 22) no Hoare annotation was computed. [2020-11-30 02:12:26,101 INFO L270 CegarLoopResult]: At program point L19-1(lines 18 24) the Hoare annotation is: false [2020-11-30 02:12:26,101 INFO L274 CegarLoopResult]: For program point L19-2(lines 19 22) no Hoare annotation was computed. [2020-11-30 02:12:26,102 INFO L270 CegarLoopResult]: At program point L19-3(lines 18 24) the Hoare annotation is: false [2020-11-30 02:12:26,102 INFO L274 CegarLoopResult]: For program point L19-4(lines 19 22) no Hoare annotation was computed. [2020-11-30 02:12:26,102 INFO L270 CegarLoopResult]: At program point L19-5(lines 18 24) the Hoare annotation is: false [2020-11-30 02:12:26,102 INFO L274 CegarLoopResult]: For program point L19-6(lines 19 22) no Hoare annotation was computed. [2020-11-30 02:12:26,102 INFO L270 CegarLoopResult]: At program point L19-7(line 46) the Hoare annotation is: false [2020-11-30 02:12:26,103 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:12:26,103 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 02:12:26,103 INFO L274 CegarLoopResult]: For program point L53(lines 53 70) no Hoare annotation was computed. [2020-11-30 02:12:26,103 INFO L274 CegarLoopResult]: For program point L20(lines 20 21) no Hoare annotation was computed. [2020-11-30 02:12:26,103 INFO L274 CegarLoopResult]: For program point L20-1(lines 20 21) no Hoare annotation was computed. [2020-11-30 02:12:26,103 INFO L274 CegarLoopResult]: For program point L20-2(lines 20 21) no Hoare annotation was computed. [2020-11-30 02:12:26,103 INFO L274 CegarLoopResult]: For program point L20-3(lines 20 21) no Hoare annotation was computed. [2020-11-30 02:12:26,104 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-30 02:12:26,104 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-30 02:12:26,104 INFO L274 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-11-30 02:12:26,104 INFO L274 CegarLoopResult]: For program point L12-6(line 12) no Hoare annotation was computed. [2020-11-30 02:12:26,104 INFO L274 CegarLoopResult]: For program point L12-8(line 12) no Hoare annotation was computed. [2020-11-30 02:12:26,104 INFO L274 CegarLoopResult]: For program point L12-10(line 12) no Hoare annotation was computed. [2020-11-30 02:12:26,105 INFO L274 CegarLoopResult]: For program point L12-12(line 12) no Hoare annotation was computed. [2020-11-30 02:12:26,105 INFO L274 CegarLoopResult]: For program point L12-14(line 12) no Hoare annotation was computed. [2020-11-30 02:12:26,105 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 02:12:26,105 INFO L274 CegarLoopResult]: For program point L47(lines 47 70) no Hoare annotation was computed. [2020-11-30 02:12:26,105 INFO L277 CegarLoopResult]: At program point L72(lines 26 73) the Hoare annotation is: true [2020-11-30 02:12:26,106 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-11-30 02:12:26,109 INFO L274 CegarLoopResult]: For program point L15-1(lines 15 17) no Hoare annotation was computed. [2020-11-30 02:12:26,109 INFO L274 CegarLoopResult]: For program point L15-2(lines 15 17) no Hoare annotation was computed. [2020-11-30 02:12:26,109 INFO L274 CegarLoopResult]: For program point L15-3(lines 15 17) no Hoare annotation was computed. [2020-11-30 02:12:26,110 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 02:12:26,110 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 02:12:26,110 INFO L274 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-11-30 02:12:26,111 INFO L274 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-11-30 02:12:26,111 INFO L274 CegarLoopResult]: For program point L16-4(line 16) no Hoare annotation was computed. [2020-11-30 02:12:26,112 INFO L274 CegarLoopResult]: For program point L16-6(line 16) no Hoare annotation was computed. [2020-11-30 02:12:26,112 INFO L274 CegarLoopResult]: For program point L41-2(lines 41 71) no Hoare annotation was computed. [2020-11-30 02:12:26,112 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:12:26,112 INFO L274 CegarLoopResult]: For program point L58(lines 58 70) no Hoare annotation was computed. [2020-11-30 02:12:26,113 INFO L270 CegarLoopResult]: At program point L58-2(lines 41 71) the Hoare annotation is: false [2020-11-30 02:12:26,113 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 02:12:26,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:12:26 BoogieIcfgContainer [2020-11-30 02:12:26,129 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:12:26,130 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:12:26,130 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:12:26,131 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:12:26,131 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:12:24" (3/4) ... [2020-11-30 02:12:26,137 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:12:26,155 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-30 02:12:26,155 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 02:12:26,156 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:12:26,156 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:12:26,250 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f37023af-fa6b-4871-860c-39249c26767c/bin/utaipan/witness.graphml [2020-11-30 02:12:26,250 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:12:26,254 INFO L168 Benchmark]: Toolchain (without parser) took 6170.79 ms. Allocated memory was 71.3 MB in the beginning and 92.3 MB in the end (delta: 21.0 MB). Free memory was 55.2 MB in the beginning and 48.6 MB in the end (delta: 6.7 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:12:26,255 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 71.3 MB. Free memory was 53.1 MB in the beginning and 53.0 MB in the end (delta: 60.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:12:26,256 INFO L168 Benchmark]: CACSL2BoogieTranslator took 402.12 ms. Allocated memory is still 71.3 MB. Free memory was 55.1 MB in the beginning and 43.1 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:12:26,256 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.19 ms. Allocated memory is still 71.3 MB. Free memory was 43.1 MB in the beginning and 53.5 MB in the end (delta: -10.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:12:26,256 INFO L168 Benchmark]: Boogie Preprocessor took 39.90 ms. Allocated memory is still 71.3 MB. Free memory was 53.5 MB in the beginning and 52.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:12:26,257 INFO L168 Benchmark]: RCFGBuilder took 3460.78 ms. Allocated memory is still 71.3 MB. Free memory was 52.0 MB in the beginning and 33.2 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:12:26,257 INFO L168 Benchmark]: TraceAbstraction took 2039.86 ms. Allocated memory was 71.3 MB in the beginning and 92.3 MB in the end (delta: 21.0 MB). Free memory was 32.6 MB in the beginning and 52.2 MB in the end (delta: -19.6 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2020-11-30 02:12:26,258 INFO L168 Benchmark]: Witness Printer took 120.52 ms. Allocated memory is still 92.3 MB. Free memory was 52.2 MB in the beginning and 48.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:12:26,260 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 71.3 MB. Free memory was 53.1 MB in the beginning and 53.0 MB in the end (delta: 60.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 402.12 ms. Allocated memory is still 71.3 MB. Free memory was 55.1 MB in the beginning and 43.1 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 97.19 ms. Allocated memory is still 71.3 MB. Free memory was 43.1 MB in the beginning and 53.5 MB in the end (delta: -10.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.90 ms. Allocated memory is still 71.3 MB. Free memory was 53.5 MB in the beginning and 52.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 3460.78 ms. Allocated memory is still 71.3 MB. Free memory was 52.0 MB in the beginning and 33.2 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2039.86 ms. Allocated memory was 71.3 MB in the beginning and 92.3 MB in the end (delta: 21.0 MB). Free memory was 32.6 MB in the beginning and 52.2 MB in the end (delta: -19.6 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * Witness Printer took 120.52 ms. Allocated memory is still 92.3 MB. Free memory was 52.2 MB in the beginning and 48.6 MB in the end (delta: 3.6 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: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 42 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 4 SDslu, 3 SDs, 0 SdLazy, 16 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 6 LocationsWithAnnotation, 6 PreInvPairs, 7 NumberOfFragments, 6 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 1302 SizeOfPredicates, 4 NumberOfNonLiveVariables, 88 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 correct! Received shutdown request...