./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aefb71c-e4b1-455b-ab11-444685b6a4da/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aefb71c-e4b1-455b-ab11-444685b6a4da/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aefb71c-e4b1-455b-ab11-444685b6a4da/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aefb71c-e4b1-455b-ab11-444685b6a4da/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aefb71c-e4b1-455b-ab11-444685b6a4da/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aefb71c-e4b1-455b-ab11-444685b6a4da/bin/uautomizer-Z5i5R5N3CC --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dc958b9ca44e6df037a80498d8cbf6f2fc13bb26 ................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:24:03,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:24:03,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:24:03,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:24:03,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:24:03,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:24:03,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:24:03,774 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:24:03,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:24:03,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:24:03,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:24:03,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:24:03,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:24:03,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:24:03,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:24:03,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:24:03,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:24:03,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:24:03,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:24:03,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:24:03,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:24:03,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:24:03,819 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:24:03,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:24:03,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:24:03,824 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:24:03,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:24:03,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:24:03,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:24:03,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:24:03,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:24:03,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:24:03,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:24:03,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:24:03,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:24:03,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:24:03,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:24:03,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:24:03,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:24:03,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:24:03,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:24:03,840 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aefb71c-e4b1-455b-ab11-444685b6a4da/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:24:03,882 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:24:03,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:24:03,884 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:24:03,884 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:24:03,884 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:24:03,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:24:03,885 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:24:03,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:24:03,885 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:24:03,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:24:03,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:24:03,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:24:03,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:24:03,894 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:24:03,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:24:03,894 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:24:03,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:24:03,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:24:03,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:24:03,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:24:03,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:24:03,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:24:03,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:24:03,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:24:03,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:24:03,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:24:03,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:24:03,896 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:24:03,897 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aefb71c-e4b1-455b-ab11-444685b6a4da/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aefb71c-e4b1-455b-ab11-444685b6a4da/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc958b9ca44e6df037a80498d8cbf6f2fc13bb26 [2021-10-11 00:24:04,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:24:04,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:24:04,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:24:04,207 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:24:04,208 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:24:04,209 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aefb71c-e4b1-455b-ab11-444685b6a4da/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i [2021-10-11 00:24:04,313 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aefb71c-e4b1-455b-ab11-444685b6a4da/bin/uautomizer-Z5i5R5N3CC/data/a48982809/5e82ae8e4cc64176979d6fe5a81d0451/FLAG230155fe7 [2021-10-11 00:24:04,772 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:24:04,773 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aefb71c-e4b1-455b-ab11-444685b6a4da/sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i [2021-10-11 00:24:04,785 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aefb71c-e4b1-455b-ab11-444685b6a4da/bin/uautomizer-Z5i5R5N3CC/data/a48982809/5e82ae8e4cc64176979d6fe5a81d0451/FLAG230155fe7 [2021-10-11 00:24:05,134 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aefb71c-e4b1-455b-ab11-444685b6a4da/bin/uautomizer-Z5i5R5N3CC/data/a48982809/5e82ae8e4cc64176979d6fe5a81d0451 [2021-10-11 00:24:05,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:24:05,138 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:24:05,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:24:05,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:24:05,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:24:05,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:24:05" (1/1) ... [2021-10-11 00:24:05,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cabf243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:05, skipping insertion in model container [2021-10-11 00:24:05,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:24:05" (1/1) ... [2021-10-11 00:24:05,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:24:05,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:24:05,324 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aefb71c-e4b1-455b-ab11-444685b6a4da/sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i[873,886] [2021-10-11 00:24:05,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:24:05,344 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:24:05,356 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aefb71c-e4b1-455b-ab11-444685b6a4da/sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i[873,886] [2021-10-11 00:24:05,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:24:05,374 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:24:05,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:05 WrapperNode [2021-10-11 00:24:05,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:24:05,376 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:24:05,376 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:24:05,376 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:24:05,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:05" (1/1) ... [2021-10-11 00:24:05,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:05" (1/1) ... [2021-10-11 00:24:05,407 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:24:05,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:24:05,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:24:05,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:24:05,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:05" (1/1) ... [2021-10-11 00:24:05,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:05" (1/1) ... [2021-10-11 00:24:05,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:05" (1/1) ... [2021-10-11 00:24:05,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:05" (1/1) ... [2021-10-11 00:24:05,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:05" (1/1) ... [2021-10-11 00:24:05,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:05" (1/1) ... [2021-10-11 00:24:05,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:05" (1/1) ... [2021-10-11 00:24:05,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:24:05,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:24:05,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:24:05,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:24:05,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:05" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aefb71c-e4b1-455b-ab11-444685b6a4da/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:24:05,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:24:05,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:24:05,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:24:05,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:24:05,728 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:24:05,728 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 00:24:05,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:24:05 BoogieIcfgContainer [2021-10-11 00:24:05,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:24:05,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:24:05,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:24:05,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:24:05,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:24:05" (1/3) ... [2021-10-11 00:24:05,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d84fbc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:24:05, skipping insertion in model container [2021-10-11 00:24:05,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:05" (2/3) ... [2021-10-11 00:24:05,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d84fbc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:24:05, skipping insertion in model container [2021-10-11 00:24:05,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:24:05" (3/3) ... [2021-10-11 00:24:05,756 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark05_conjunctive.i [2021-10-11 00:24:05,770 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:24:05,773 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 00:24:05,785 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 00:24:05,808 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:24:05,809 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:24:05,809 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:24:05,809 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:24:05,809 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:24:05,809 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:24:05,809 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:24:05,810 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:24:05,821 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2021-10-11 00:24:05,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 00:24:05,835 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:05,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:24:05,836 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:24:05,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:05,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1807274183, now seen corresponding path program 1 times [2021-10-11 00:24:05,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:05,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254969421] [2021-10-11 00:24:05,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:05,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:05,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254969421] [2021-10-11 00:24:05,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:24:05,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:24:05,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901530196] [2021-10-11 00:24:05,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:24:05,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:06,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:24:06,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:24:06,015 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2021-10-11 00:24:06,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:06,041 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2021-10-11 00:24:06,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:24:06,043 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2021-10-11 00:24:06,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:06,057 INFO L225 Difference]: With dead ends: 21 [2021-10-11 00:24:06,058 INFO L226 Difference]: Without dead ends: 9 [2021-10-11 00:24:06,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:24:06,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-11 00:24:06,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-11 00:24:06,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-11 00:24:06,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-10-11 00:24:06,102 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2021-10-11 00:24:06,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:06,102 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-10-11 00:24:06,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:24:06,104 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-10-11 00:24:06,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 00:24:06,104 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:06,104 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:24:06,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:24:06,105 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:24:06,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:06,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1806976273, now seen corresponding path program 1 times [2021-10-11 00:24:06,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:06,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64223974] [2021-10-11 00:24:06,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:06,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:06,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64223974] [2021-10-11 00:24:06,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:24:06,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:24:06,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587677483] [2021-10-11 00:24:06,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:24:06,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:06,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:24:06,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:24:06,221 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 3 states. [2021-10-11 00:24:06,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:06,276 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-10-11 00:24:06,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:24:06,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-10-11 00:24:06,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:06,277 INFO L225 Difference]: With dead ends: 14 [2021-10-11 00:24:06,277 INFO L226 Difference]: Without dead ends: 10 [2021-10-11 00:24:06,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:24:06,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-11 00:24:06,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-11 00:24:06,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-11 00:24:06,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-10-11 00:24:06,282 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2021-10-11 00:24:06,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:06,282 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-11 00:24:06,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:24:06,283 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-10-11 00:24:06,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 00:24:06,283 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:06,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:24:06,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:24:06,284 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:24:06,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:06,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1387754644, now seen corresponding path program 1 times [2021-10-11 00:24:06,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:06,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504923151] [2021-10-11 00:24:06,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:06,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:06,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504923151] [2021-10-11 00:24:06,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122074965] [2021-10-11 00:24:06,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aefb71c-e4b1-455b-ab11-444685b6a4da/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:06,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:06,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 00:24:06,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:06,577 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 00:24:06,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:06,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:24:06,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-10-11 00:24:06,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545981531] [2021-10-11 00:24:06,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 00:24:06,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:06,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 00:24:06,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:24:06,597 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 9 states. [2021-10-11 00:24:06,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:06,685 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2021-10-11 00:24:06,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:24:06,685 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2021-10-11 00:24:06,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:06,686 INFO L225 Difference]: With dead ends: 19 [2021-10-11 00:24:06,686 INFO L226 Difference]: Without dead ends: 13 [2021-10-11 00:24:06,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:24:06,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-11 00:24:06,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-10-11 00:24:06,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-11 00:24:06,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-10-11 00:24:06,691 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2021-10-11 00:24:06,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:06,691 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-10-11 00:24:06,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 00:24:06,692 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2021-10-11 00:24:06,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 00:24:06,692 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:06,692 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:24:06,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-11 00:24:06,922 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:24:06,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:06,923 INFO L82 PathProgramCache]: Analyzing trace with hash -2052272297, now seen corresponding path program 2 times [2021-10-11 00:24:06,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:06,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104479194] [2021-10-11 00:24:06,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:07,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:07,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104479194] [2021-10-11 00:24:07,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410575224] [2021-10-11 00:24:07,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aefb71c-e4b1-455b-ab11-444685b6a4da/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:07,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:24:07,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:24:07,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-11 00:24:07,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:07,277 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 00:24:07,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:07,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:24:07,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-10-11 00:24:07,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822612689] [2021-10-11 00:24:07,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-10-11 00:24:07,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:07,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-11 00:24:07,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:24:07,304 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 11 states. [2021-10-11 00:24:07,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:07,416 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2021-10-11 00:24:07,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:24:07,417 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2021-10-11 00:24:07,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:07,418 INFO L225 Difference]: With dead ends: 15 [2021-10-11 00:24:07,418 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 00:24:07,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-10-11 00:24:07,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 00:24:07,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 00:24:07,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 00:24:07,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 00:24:07,421 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-10-11 00:24:07,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:07,422 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:24:07,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-10-11 00:24:07,422 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:24:07,422 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 00:24:07,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:07,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 00:24:07,705 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 00:24:07,706 INFO L265 CegarLoopResult]: At program point L29(lines 19 30) the Hoare annotation is: true [2021-10-11 00:24:07,706 INFO L262 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2021-10-11 00:24:07,706 INFO L262 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-10-11 00:24:07,706 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 00:24:07,707 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 00:24:07,707 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 00:24:07,707 INFO L262 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2021-10-11 00:24:07,707 INFO L258 CegarLoopResult]: At program point L26-2(lines 24 27) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0))) (or (and (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~n~0) .cse0 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0)) (and .cse0 (<= (+ ULTIMATE.start_main_~y~0 1) ULTIMATE.start_main_~n~0)))) [2021-10-11 00:24:07,707 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-10-11 00:24:07,708 INFO L262 CegarLoopResult]: For program point L24-2(lines 24 27) no Hoare annotation was computed. [2021-10-11 00:24:07,708 INFO L262 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2021-10-11 00:24:07,708 INFO L262 CegarLoopResult]: For program point L14(lines 14 18) no Hoare annotation was computed. [2021-10-11 00:24:07,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:24:07 BoogieIcfgContainer [2021-10-11 00:24:07,726 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:24:07,727 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:24:07,727 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:24:07,728 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:24:07,728 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:24:05" (3/4) ... [2021-10-11 00:24:07,731 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 00:24:07,743 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-11 00:24:07,743 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 00:24:07,744 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:24:07,744 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:24:07,798 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aefb71c-e4b1-455b-ab11-444685b6a4da/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:24:07,801 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:24:07,803 INFO L168 Benchmark]: Toolchain (without parser) took 2663.12 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 63.4 MB in the beginning and 94.6 MB in the end (delta: -31.2 MB). Peak memory consumption was 35.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:07,803 INFO L168 Benchmark]: CDTParser took 0.62 ms. Allocated memory is still 94.4 MB. Free memory was 49.6 MB in the beginning and 49.5 MB in the end (delta: 43.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:24:07,805 INFO L168 Benchmark]: CACSL2BoogieTranslator took 234.39 ms. Allocated memory is still 94.4 MB. Free memory was 63.2 MB in the beginning and 71.3 MB in the end (delta: -8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:07,805 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.84 ms. Allocated memory is still 94.4 MB. Free memory was 71.3 MB in the beginning and 70.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:24:07,806 INFO L168 Benchmark]: Boogie Preprocessor took 21.78 ms. Allocated memory is still 94.4 MB. Free memory was 70.0 MB in the beginning and 68.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:07,806 INFO L168 Benchmark]: RCFGBuilder took 307.16 ms. Allocated memory is still 94.4 MB. Free memory was 68.8 MB in the beginning and 57.5 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:07,812 INFO L168 Benchmark]: TraceAbstraction took 1981.18 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 56.7 MB in the beginning and 52.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:07,813 INFO L168 Benchmark]: Witness Printer took 73.73 ms. Allocated memory is still 117.4 MB. Free memory was 52.5 MB in the beginning and 94.6 MB in the end (delta: -42.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:07,816 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62 ms. Allocated memory is still 94.4 MB. Free memory was 49.6 MB in the beginning and 49.5 MB in the end (delta: 43.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 234.39 ms. Allocated memory is still 94.4 MB. Free memory was 63.2 MB in the beginning and 71.3 MB in the end (delta: -8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.84 ms. Allocated memory is still 94.4 MB. Free memory was 71.3 MB in the beginning and 70.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.78 ms. Allocated memory is still 94.4 MB. Free memory was 70.0 MB in the beginning and 68.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 307.16 ms. Allocated memory is still 94.4 MB. Free memory was 68.8 MB in the beginning and 57.5 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1981.18 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 56.7 MB in the beginning and 52.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. * Witness Printer took 73.73 ms. Allocated memory is still 117.4 MB. Free memory was 52.5 MB in the beginning and 94.6 MB in the end (delta: -42.1 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: 16]: 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 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((y <= n && x <= y) && y <= x) || (x <= y && y + 1 <= n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 32 SDtfs, 15 SDslu, 29 SDs, 0 SdLazy, 76 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 21 HoareAnnotationTreeSize, 2 FomulaSimplifications, 33 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 1854 SizeOfPredicates, 9 NumberOfNonLiveVariables, 114 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 5/10 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...