./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/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_d46c8851-9e72-4275-967e-2ea506e8d129/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/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 0.2.0-7b2dab5 [2020-12-09 18:58:42,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 18:58:42,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 18:58:42,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 18:58:42,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 18:58:42,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 18:58:42,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 18:58:42,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 18:58:42,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 18:58:42,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 18:58:42,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 18:58:42,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 18:58:42,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 18:58:42,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 18:58:42,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 18:58:42,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 18:58:42,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 18:58:42,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 18:58:42,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 18:58:42,223 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 18:58:42,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 18:58:42,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 18:58:42,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 18:58:42,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 18:58:42,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 18:58:42,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 18:58:42,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 18:58:42,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 18:58:42,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 18:58:42,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 18:58:42,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 18:58:42,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 18:58:42,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 18:58:42,234 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 18:58:42,235 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 18:58:42,235 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 18:58:42,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 18:58:42,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 18:58:42,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 18:58:42,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 18:58:42,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 18:58:42,238 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 18:58:42,255 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 18:58:42,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 18:58:42,256 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 18:58:42,256 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 18:58:42,256 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 18:58:42,256 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 18:58:42,256 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 18:58:42,256 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 18:58:42,257 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 18:58:42,257 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 18:58:42,257 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 18:58:42,257 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 18:58:42,257 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 18:58:42,257 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 18:58:42,257 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 18:58:42,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 18:58:42,263 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 18:58:42,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 18:58:42,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 18:58:42,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 18:58:42,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 18:58:42,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 18:58:42,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 18:58:42,264 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 18:58:42,264 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 18:58:42,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 18:58:42,264 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 18:58:42,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 18:58:42,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 18:58:42,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 18:58:42,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:58:42,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 18:58:42,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 18:58:42,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 18:58:42,265 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 18:58:42,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 18:58:42,265 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 18:58:42,265 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 18:58:42,265 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 18:58:42,266 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_d46c8851-9e72-4275-967e-2ea506e8d129/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d17e00bd44b55018d16a0aa5f90810f5973068e1 [2020-12-09 18:58:42,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 18:58:42,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 18:58:42,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 18:58:42,449 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 18:58:42,449 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 18:58:42,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i [2020-12-09 18:58:42,491 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/bin/utaipan/data/7a1238378/625ad41f7f5141fda13bc14ba09f7125/FLAG215e8c8dc [2020-12-09 18:58:42,867 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 18:58:42,867 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i [2020-12-09 18:58:42,872 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/bin/utaipan/data/7a1238378/625ad41f7f5141fda13bc14ba09f7125/FLAG215e8c8dc [2020-12-09 18:58:42,885 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/bin/utaipan/data/7a1238378/625ad41f7f5141fda13bc14ba09f7125 [2020-12-09 18:58:42,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 18:58:42,888 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 18:58:42,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 18:58:42,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 18:58:42,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 18:58:42,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:58:42" (1/1) ... [2020-12-09 18:58:42,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4918a856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:58:42, skipping insertion in model container [2020-12-09 18:58:42,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:58:42" (1/1) ... [2020-12-09 18:58:42,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 18:58:42,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:58:43,007 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i[948,961] [2020-12-09 18:58:43,017 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:1710) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:234) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1402) 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:707) 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:1353) 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:1046) 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:1424) 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:3213) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2293) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:580) 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) [2020-12-09 18:58:43,021 INFO L168 Benchmark]: Toolchain (without parser) took 131.65 ms. Allocated memory is still 81.8 MB. Free memory was 61.0 MB in the beginning and 52.5 MB in the end (delta: 8.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 18:58:43,021 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 81.8 MB. Free memory is still 56.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:58:43,022 INFO L168 Benchmark]: CACSL2BoogieTranslator took 130.29 ms. Allocated memory is still 81.8 MB. Free memory was 60.8 MB in the beginning and 52.5 MB in the end (delta: 8.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 18:58:43,023 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 81.8 MB. Free memory is still 56.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 130.29 ms. Allocated memory is still 81.8 MB. Free memory was 60.8 MB in the beginning and 52.5 MB in the end (delta: 8.3 MB). Peak memory consumption was 6.3 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 0.2.0-7b2dab5 [2020-12-09 18:58:44,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 18:58:44,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 18:58:44,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 18:58:44,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 18:58:44,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 18:58:44,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 18:58:44,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 18:58:44,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 18:58:44,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 18:58:44,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 18:58:44,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 18:58:44,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 18:58:44,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 18:58:44,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 18:58:44,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 18:58:44,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 18:58:44,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 18:58:44,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 18:58:44,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 18:58:44,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 18:58:44,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 18:58:44,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 18:58:44,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 18:58:44,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 18:58:44,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 18:58:44,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 18:58:44,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 18:58:44,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 18:58:44,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 18:58:44,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 18:58:44,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 18:58:44,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 18:58:44,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 18:58:44,382 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 18:58:44,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 18:58:44,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 18:58:44,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 18:58:44,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 18:58:44,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 18:58:44,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 18:58:44,385 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 18:58:44,403 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 18:58:44,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 18:58:44,404 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 18:58:44,404 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 18:58:44,404 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 18:58:44,404 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 18:58:44,404 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 18:58:44,404 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 18:58:44,405 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 18:58:44,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 18:58:44,405 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 18:58:44,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 18:58:44,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 18:58:44,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 18:58:44,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 18:58:44,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 18:58:44,406 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 18:58:44,406 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 18:58:44,406 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 18:58:44,406 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 18:58:44,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 18:58:44,407 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 18:58:44,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 18:58:44,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 18:58:44,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 18:58:44,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 18:58:44,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:58:44,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 18:58:44,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 18:58:44,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 18:58:44,412 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 18:58:44,413 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 18:58:44,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 18:58:44,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 18:58:44,413 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 18:58:44,413 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_d46c8851-9e72-4275-967e-2ea506e8d129/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d17e00bd44b55018d16a0aa5f90810f5973068e1 [2020-12-09 18:58:44,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 18:58:44,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 18:58:44,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 18:58:44,665 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 18:58:44,666 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 18:58:44,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i [2020-12-09 18:58:44,709 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/bin/utaipan/data/250377137/4c86a8bd0f4d4e4a94c938b7a5dc02ad/FLAG06247e919 [2020-12-09 18:58:45,084 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 18:58:45,084 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i [2020-12-09 18:58:45,090 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/bin/utaipan/data/250377137/4c86a8bd0f4d4e4a94c938b7a5dc02ad/FLAG06247e919 [2020-12-09 18:58:45,100 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/bin/utaipan/data/250377137/4c86a8bd0f4d4e4a94c938b7a5dc02ad [2020-12-09 18:58:45,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 18:58:45,103 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 18:58:45,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 18:58:45,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 18:58:45,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 18:58:45,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:58:45" (1/1) ... [2020-12-09 18:58:45,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@598d3fc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:58:45, skipping insertion in model container [2020-12-09 18:58:45,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:58:45" (1/1) ... [2020-12-09 18:58:45,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 18:58:45,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:58:45,233 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i[948,961] [2020-12-09 18:58:45,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:58:45,279 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 18:58:45,296 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i[948,961] [2020-12-09 18:58:45,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:58:45,323 INFO L208 MainTranslator]: Completed translation [2020-12-09 18:58:45,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:58:45 WrapperNode [2020-12-09 18:58:45,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 18:58:45,324 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 18:58:45,324 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 18:58:45,324 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 18:58:45,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:58:45" (1/1) ... [2020-12-09 18:58:45,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:58:45" (1/1) ... [2020-12-09 18:58:45,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 18:58:45,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 18:58:45,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 18:58:45,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 18:58:45,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:58:45" (1/1) ... [2020-12-09 18:58:45,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:58:45" (1/1) ... [2020-12-09 18:58:45,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:58:45" (1/1) ... [2020-12-09 18:58:45,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:58:45" (1/1) ... [2020-12-09 18:58:45,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:58:45" (1/1) ... [2020-12-09 18:58:45,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:58:45" (1/1) ... [2020-12-09 18:58:45,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:58:45" (1/1) ... [2020-12-09 18:58:45,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 18:58:45,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 18:58:45,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 18:58:45,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 18:58:45,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:58:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/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 [2020-12-09 18:58:45,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 18:58:45,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 18:58:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 18:58:45,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 18:58:48,489 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 18:58:48,489 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2020-12-09 18:58:48,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:58:48 BoogieIcfgContainer [2020-12-09 18:58:48,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 18:58:48,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 18:58:48,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 18:58:48,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 18:58:48,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:58:45" (1/3) ... [2020-12-09 18:58:48,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@560a40f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:58:48, skipping insertion in model container [2020-12-09 18:58:48,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:58:45" (2/3) ... [2020-12-09 18:58:48,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@560a40f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:58:48, skipping insertion in model container [2020-12-09 18:58:48,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:58:48" (3/3) ... [2020-12-09 18:58:48,497 INFO L111 eAbstractionObserver]: Analyzing ICFG knuth_valuebound2.i [2020-12-09 18:58:48,506 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 18:58:48,509 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-09 18:58:48,517 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 18:58:48,535 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 18:58:48,535 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 18:58:48,535 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 18:58:48,535 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 18:58:48,535 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 18:58:48,535 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 18:58:48,536 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 18:58:48,536 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 18:58:48,545 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-12-09 18:58:48,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 18:58:48,548 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:58:48,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:58:48,549 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:58:48,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:58:48,553 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2020-12-09 18:58:48,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:58:48,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343525313] [2020-12-09 18:58:48,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/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 [2020-12-09 18:58:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:58:48,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 18:58:48,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:58:48,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:58:48,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:58:48,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343525313] [2020-12-09 18:58:48,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:58:48,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:58:48,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308654619] [2020-12-09 18:58:48,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 18:58:48,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:58:48,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 18:58:48,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 18:58:48,894 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2020-12-09 18:58:48,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:58:48,906 INFO L93 Difference]: Finished difference Result 65 states and 90 transitions. [2020-12-09 18:58:48,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 18:58:48,907 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-09 18:58:48,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:58:48,914 INFO L225 Difference]: With dead ends: 65 [2020-12-09 18:58:48,914 INFO L226 Difference]: Without dead ends: 30 [2020-12-09 18:58:48,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 18:58:48,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-09 18:58:48,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-12-09 18:58:48,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-09 18:58:48,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-12-09 18:58:48,939 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 13 [2020-12-09 18:58:48,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:58:48,939 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-12-09 18:58:48,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 18:58:48,939 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-12-09 18:58:48,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 18:58:48,940 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:58:48,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:58:49,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 18:58:49,142 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:58:49,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:58:49,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2020-12-09 18:58:49,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:58:49,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476141132] [2020-12-09 18:58:49,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/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 [2020-12-09 18:58:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:58:49,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 18:58:49,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:58:49,787 WARN L197 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 12 [2020-12-09 18:58:49,870 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:58:50,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:58:50,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:58:50,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1476141132] [2020-12-09 18:58:50,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:58:50,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 18:58:50,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257124621] [2020-12-09 18:58:50,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 18:58:50,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:58:50,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 18:58:50,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:58:50,020 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2020-12-09 18:58:50,340 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 7 [2020-12-09 18:58:50,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:58:50,481 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-12-09 18:58:50,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 18:58:50,481 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 18:58:50,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:58:50,481 INFO L225 Difference]: With dead ends: 30 [2020-12-09 18:58:50,481 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 18:58:50,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 18:58:50,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 18:58:50,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 18:58:50,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 18:58:50,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 18:58:50,483 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-12-09 18:58:50,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:58:50,483 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 18:58:50,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 18:58:50,483 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 18:58:50,483 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 18:58:50,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 18:58:50,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 18:58:50,770 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2020-12-09 18:58:50,771 INFO L262 CegarLoopResult]: For program point L19(lines 19 22) no Hoare annotation was computed. [2020-12-09 18:58:50,771 INFO L258 CegarLoopResult]: At program point L19-2(lines 18 24) the Hoare annotation is: false [2020-12-09 18:58:50,771 INFO L262 CegarLoopResult]: For program point L19-3(lines 19 22) no Hoare annotation was computed. [2020-12-09 18:58:50,771 INFO L258 CegarLoopResult]: At program point L19-5(lines 18 24) the Hoare annotation is: false [2020-12-09 18:58:50,771 INFO L262 CegarLoopResult]: For program point L19-6(lines 19 22) no Hoare annotation was computed. [2020-12-09 18:58:50,771 INFO L258 CegarLoopResult]: At program point L19-8(lines 18 24) the Hoare annotation is: false [2020-12-09 18:58:50,771 INFO L262 CegarLoopResult]: For program point L19-9(lines 19 22) no Hoare annotation was computed. [2020-12-09 18:58:50,771 INFO L258 CegarLoopResult]: At program point L19-11(line 46) the Hoare annotation is: false [2020-12-09 18:58:50,771 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 18:58:50,771 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 18:58:50,772 INFO L262 CegarLoopResult]: For program point L53(lines 53 70) no Hoare annotation was computed. [2020-12-09 18:58:50,772 INFO L262 CegarLoopResult]: For program point L20(lines 20 21) no Hoare annotation was computed. [2020-12-09 18:58:50,772 INFO L262 CegarLoopResult]: For program point L20-1(lines 20 21) no Hoare annotation was computed. [2020-12-09 18:58:50,772 INFO L262 CegarLoopResult]: For program point L20-2(lines 20 21) no Hoare annotation was computed. [2020-12-09 18:58:50,772 INFO L262 CegarLoopResult]: For program point L20-3(lines 20 21) no Hoare annotation was computed. [2020-12-09 18:58:50,772 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2020-12-09 18:58:50,772 INFO L262 CegarLoopResult]: For program point L47(lines 47 70) no Hoare annotation was computed. [2020-12-09 18:58:50,772 INFO L265 CegarLoopResult]: At program point L72(lines 26 73) the Hoare annotation is: true [2020-12-09 18:58:50,772 INFO L262 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-12-09 18:58:50,772 INFO L262 CegarLoopResult]: For program point L15-1(lines 15 17) no Hoare annotation was computed. [2020-12-09 18:58:50,772 INFO L262 CegarLoopResult]: For program point L15-2(lines 15 17) no Hoare annotation was computed. [2020-12-09 18:58:50,773 INFO L262 CegarLoopResult]: For program point L15-3(lines 15 17) no Hoare annotation was computed. [2020-12-09 18:58:50,773 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 18:58:50,773 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2020-12-09 18:58:50,773 INFO L262 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-12-09 18:58:50,773 INFO L262 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-12-09 18:58:50,773 INFO L262 CegarLoopResult]: For program point L16-4(line 16) no Hoare annotation was computed. [2020-12-09 18:58:50,773 INFO L262 CegarLoopResult]: For program point L16-6(line 16) no Hoare annotation was computed. [2020-12-09 18:58:50,773 INFO L262 CegarLoopResult]: For program point L41-2(lines 41 71) no Hoare annotation was computed. [2020-12-09 18:58:50,773 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 18:58:50,773 INFO L262 CegarLoopResult]: For program point L58(lines 58 70) no Hoare annotation was computed. [2020-12-09 18:58:50,773 INFO L258 CegarLoopResult]: At program point L58-2(lines 41 71) the Hoare annotation is: false [2020-12-09 18:58:50,773 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2020-12-09 18:58:50,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:58:50 BoogieIcfgContainer [2020-12-09 18:58:50,780 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 18:58:50,780 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 18:58:50,781 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 18:58:50,781 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 18:58:50,781 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:58:48" (3/4) ... [2020-12-09 18:58:50,783 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 18:58:50,792 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-12-09 18:58:50,793 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 18:58:50,793 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 18:58:50,793 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 18:58:50,832 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d46c8851-9e72-4275-967e-2ea506e8d129/bin/utaipan/witness.graphml [2020-12-09 18:58:50,833 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 18:58:50,833 INFO L168 Benchmark]: Toolchain (without parser) took 5730.07 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 31.8 MB in the beginning and 28.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2020-12-09 18:58:50,834 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 54.5 MB. Free memory was 37.1 MB in the beginning and 37.0 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:58:50,834 INFO L168 Benchmark]: CACSL2BoogieTranslator took 219.47 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 31.7 MB in the beginning and 50.8 MB in the end (delta: -19.1 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2020-12-09 18:58:50,834 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.98 ms. Allocated memory is still 69.2 MB. Free memory was 50.8 MB in the beginning and 48.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:58:50,837 INFO L168 Benchmark]: Boogie Preprocessor took 22.63 ms. Allocated memory is still 69.2 MB. Free memory was 48.9 MB in the beginning and 47.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:58:50,837 INFO L168 Benchmark]: RCFGBuilder took 3111.74 ms. Allocated memory is still 69.2 MB. Free memory was 47.2 MB in the beginning and 44.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 18:58:50,837 INFO L168 Benchmark]: TraceAbstraction took 2287.96 ms. Allocated memory is still 69.2 MB. Free memory was 44.2 MB in the beginning and 31.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2020-12-09 18:58:50,838 INFO L168 Benchmark]: Witness Printer took 52.17 ms. Allocated memory is still 69.2 MB. Free memory was 31.6 MB in the beginning and 28.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:58:50,840 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 54.5 MB. Free memory was 37.1 MB in the beginning and 37.0 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 219.47 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 31.7 MB in the beginning and 50.8 MB in the end (delta: -19.1 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.98 ms. Allocated memory is still 69.2 MB. Free memory was 50.8 MB in the beginning and 48.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.63 ms. Allocated memory is still 69.2 MB. Free memory was 48.9 MB in the beginning and 47.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3111.74 ms. Allocated memory is still 69.2 MB. Free memory was 47.2 MB in the beginning and 44.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2287.96 ms. Allocated memory is still 69.2 MB. Free memory was 44.2 MB in the beginning and 31.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. * Witness Printer took 52.17 ms. Allocated memory is still 69.2 MB. Free memory was 31.6 MB in the beginning and 28.3 MB in the end (delta: 3.3 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: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is 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: 18]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 0 - 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, 34 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 2 SDslu, 4 SDs, 0 SdLazy, 15 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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, 0.4s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 564 SizeOfPredicates, 4 NumberOfNonLiveVariables, 84 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...