./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/mono-crafted_12.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6cebedde-9e0b-41c4-ac5f-1836f7944575/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6cebedde-9e0b-41c4-ac5f-1836f7944575/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6cebedde-9e0b-41c4-ac5f-1836f7944575/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6cebedde-9e0b-41c4-ac5f-1836f7944575/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/mono-crafted_12.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6cebedde-9e0b-41c4-ac5f-1836f7944575/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6cebedde-9e0b-41c4-ac5f-1836f7944575/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 7cbb17f5b7bb6fe0e12d1310641ba9d20bfc6717 ................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:05:00,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:05:00,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:05:00,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:05:00,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:05:00,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:05:00,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:05:00,852 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:05:00,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:05:00,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:05:00,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:05:00,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:05:00,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:05:00,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:05:00,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:05:00,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:05:00,864 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:05:00,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:05:00,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:05:00,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:05:00,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:05:00,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:05:00,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:05:00,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:05:00,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:05:00,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:05:00,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:05:00,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:05:00,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:05:00,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:05:00,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:05:00,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:05:00,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:05:00,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:05:00,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:05:00,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:05:00,895 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:05:00,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:05:00,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:05:00,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:05:00,898 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:05:00,902 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6cebedde-9e0b-41c4-ac5f-1836f7944575/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:05:00,938 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:05:00,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:05:00,943 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:05:00,944 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:05:00,944 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:05:00,944 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:05:00,945 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:05:00,945 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:05:00,945 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:05:00,945 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:05:00,946 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:05:00,947 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:05:00,947 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:05:00,947 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:05:00,947 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:05:00,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:05:00,948 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:05:00,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:05:00,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:05:00,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:05:00,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:05:00,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:05:00,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:05:00,950 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:05:00,950 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:05:00,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:05:00,951 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:05:00,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:05:00,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:05:00,952 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:05:00,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:05:00,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:00,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:05:00,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:05:00,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:05:00,953 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:05:00,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:05:00,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:05:00,954 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:05:00,954 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:05:00,954 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_6cebedde-9e0b-41c4-ac5f-1836f7944575/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6cebedde-9e0b-41c4-ac5f-1836f7944575/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cbb17f5b7bb6fe0e12d1310641ba9d20bfc6717 [2020-11-22 13:05:01,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:05:01,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:05:01,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:05:01,238 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:05:01,239 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:05:01,240 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6cebedde-9e0b-41c4-ac5f-1836f7944575/bin/utaipan/../../sv-benchmarks/c/loops-crafted-1/mono-crafted_12.c [2020-11-22 13:05:01,317 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6cebedde-9e0b-41c4-ac5f-1836f7944575/bin/utaipan/data/91781d110/dde595f0df9c4367a179baafdf05c7f6/FLAG450965e6f [2020-11-22 13:05:01,700 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:05:01,700 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6cebedde-9e0b-41c4-ac5f-1836f7944575/sv-benchmarks/c/loops-crafted-1/mono-crafted_12.c [2020-11-22 13:05:01,706 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6cebedde-9e0b-41c4-ac5f-1836f7944575/bin/utaipan/data/91781d110/dde595f0df9c4367a179baafdf05c7f6/FLAG450965e6f [2020-11-22 13:05:02,109 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6cebedde-9e0b-41c4-ac5f-1836f7944575/bin/utaipan/data/91781d110/dde595f0df9c4367a179baafdf05c7f6 [2020-11-22 13:05:02,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:05:02,112 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:05:02,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:02,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:05:02,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:05:02,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:02" (1/1) ... [2020-11-22 13:05:02,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5da686dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:02, skipping insertion in model container [2020-11-22 13:05:02,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:02" (1/1) ... [2020-11-22 13:05:02,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:05:02,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:05:02,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:02,286 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:05:02,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:02,314 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:05:02,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:02 WrapperNode [2020-11-22 13:05:02,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:02,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:02,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:05:02,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:05:02,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:02" (1/1) ... [2020-11-22 13:05:02,343 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:02" (1/1) ... [2020-11-22 13:05:02,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:02,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:05:02,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:05:02,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:05:02,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:02" (1/1) ... [2020-11-22 13:05:02,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:02" (1/1) ... [2020-11-22 13:05:02,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:02" (1/1) ... [2020-11-22 13:05:02,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:02" (1/1) ... [2020-11-22 13:05:02,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:02" (1/1) ... [2020-11-22 13:05:02,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:02" (1/1) ... [2020-11-22 13:05:02,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:02" (1/1) ... [2020-11-22 13:05:02,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:05:02,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:05:02,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:05:02,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:05:02,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6cebedde-9e0b-41c4-ac5f-1836f7944575/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:02,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:05:02,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:05:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:05:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:05:02,819 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:05:02,819 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 13:05:02,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:02 BoogieIcfgContainer [2020-11-22 13:05:02,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:05:02,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:05:02,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:05:02,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:05:02,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:05:02" (1/3) ... [2020-11-22 13:05:02,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e03026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:02, skipping insertion in model container [2020-11-22 13:05:02,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:02" (2/3) ... [2020-11-22 13:05:02,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e03026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:02, skipping insertion in model container [2020-11-22 13:05:02,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:02" (3/3) ... [2020-11-22 13:05:02,831 INFO L111 eAbstractionObserver]: Analyzing ICFG mono-crafted_12.c [2020-11-22 13:05:02,845 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:05:02,849 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:05:02,857 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:05:02,883 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:05:02,883 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:05:02,883 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:05:02,883 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:05:02,884 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:05:02,884 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:05:02,884 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:05:02,884 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:05:02,895 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-11-22 13:05:02,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-22 13:05:02,899 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:02,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-22 13:05:02,900 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:02,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:02,906 INFO L82 PathProgramCache]: Analyzing trace with hash 2100587, now seen corresponding path program 1 times [2020-11-22 13:05:02,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:02,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116529230] [2020-11-22 13:05:02,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:03,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:03,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116529230] [2020-11-22 13:05:03,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:03,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:05:03,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664506548] [2020-11-22 13:05:03,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:05:03,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:03,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:05:03,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:05:03,214 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 4 states. [2020-11-22 13:05:03,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:03,276 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2020-11-22 13:05:03,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:05:03,278 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-22 13:05:03,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:03,293 INFO L225 Difference]: With dead ends: 15 [2020-11-22 13:05:03,301 INFO L226 Difference]: Without dead ends: 6 [2020-11-22 13:05:03,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:05:03,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2020-11-22 13:05:03,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2020-11-22 13:05:03,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-22 13:05:03,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2020-11-22 13:05:03,361 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2020-11-22 13:05:03,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:03,362 INFO L481 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2020-11-22 13:05:03,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:05:03,362 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2020-11-22 13:05:03,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 13:05:03,362 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:03,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 13:05:03,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:05:03,363 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:03,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:03,364 INFO L82 PathProgramCache]: Analyzing trace with hash 65078761, now seen corresponding path program 1 times [2020-11-22 13:05:03,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:03,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652259985] [2020-11-22 13:05:03,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:03,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:03,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652259985] [2020-11-22 13:05:03,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063695011] [2020-11-22 13:05:03,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6cebedde-9e0b-41c4-ac5f-1836f7944575/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:05:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:03,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-22 13:05:03,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:03,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:03,710 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:05:03,745 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-22 13:05:03,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-22 13:05:03,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-11-22 13:05:03,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2020-11-22 13:05:03,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325615164] [2020-11-22 13:05:03,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:05:03,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:03,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:05:03,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-11-22 13:05:03,780 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 4 states. [2020-11-22 13:05:03,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:03,795 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2020-11-22 13:05:03,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:05:03,795 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-22 13:05:03,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:03,795 INFO L225 Difference]: With dead ends: 6 [2020-11-22 13:05:03,795 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:05:03,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-11-22 13:05:03,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:05:03,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:05:03,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:05:03,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:05:03,796 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2020-11-22 13:05:03,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:03,797 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:05:03,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:05:03,797 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:05:03,797 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:05:03,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-22 13:05:04,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:05:04,033 INFO L270 CegarLoopResult]: At program point L4-3(line 4) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2020-11-22 13:05:04,034 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:05:04,034 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:05:04,034 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-22 13:05:04,034 INFO L270 CegarLoopResult]: At program point L10-2(lines 10 14) the Hoare annotation is: (= (mod ULTIMATE.start_main_~z~0 2) 0) [2020-11-22 13:05:04,034 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-11-22 13:05:04,034 INFO L274 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-11-22 13:05:04,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:05:04 BoogieIcfgContainer [2020-11-22 13:05:04,050 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:05:04,057 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:05:04,058 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:05:04,058 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:05:04,058 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:02" (3/4) ... [2020-11-22 13:05:04,061 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:05:04,071 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-22 13:05:04,071 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-22 13:05:04,071 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 13:05:04,072 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:05:04,101 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6cebedde-9e0b-41c4-ac5f-1836f7944575/bin/utaipan/witness.graphml [2020-11-22 13:05:04,101 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:05:04,103 INFO L168 Benchmark]: Toolchain (without parser) took 1989.19 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 79.7 MB in the beginning and 77.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 21.9 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:04,103 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 107.0 MB. Free memory was 62.7 MB in the beginning and 62.6 MB in the end (delta: 43.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:04,104 INFO L168 Benchmark]: CACSL2BoogieTranslator took 194.96 ms. Allocated memory is still 107.0 MB. Free memory was 79.4 MB in the beginning and 84.8 MB in the end (delta: -5.4 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:04,105 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.30 ms. Allocated memory is still 107.0 MB. Free memory was 84.8 MB in the beginning and 83.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:04,105 INFO L168 Benchmark]: Boogie Preprocessor took 17.05 ms. Allocated memory is still 107.0 MB. Free memory was 83.5 MB in the beginning and 82.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:04,106 INFO L168 Benchmark]: RCFGBuilder took 440.32 ms. Allocated memory is still 107.0 MB. Free memory was 82.4 MB in the beginning and 67.5 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:04,106 INFO L168 Benchmark]: TraceAbstraction took 1231.23 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 67.2 MB in the beginning and 80.0 MB in the end (delta: -12.8 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:04,107 INFO L168 Benchmark]: Witness Printer took 44.46 ms. Allocated memory is still 130.0 MB. Free memory was 80.0 MB in the beginning and 77.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:04,110 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 107.0 MB. Free memory was 62.7 MB in the beginning and 62.6 MB in the end (delta: 43.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 194.96 ms. Allocated memory is still 107.0 MB. Free memory was 79.4 MB in the beginning and 84.8 MB in the end (delta: -5.4 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.30 ms. Allocated memory is still 107.0 MB. Free memory was 84.8 MB in the beginning and 83.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.05 ms. Allocated memory is still 107.0 MB. Free memory was 83.5 MB in the beginning and 82.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 440.32 ms. Allocated memory is still 107.0 MB. Free memory was 82.4 MB in the beginning and 67.5 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1231.23 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 67.2 MB in the beginning and 80.0 MB in the end (delta: -12.8 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. * Witness Printer took 44.46 ms. Allocated memory is still 130.0 MB. Free memory was 80.0 MB in the beginning and 77.4 MB in the end (delta: 2.5 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: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: z % 2 == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 SDtfs, 7 SDslu, 7 SDs, 0 SdLazy, 11 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 9 HoareAnnotationTreeSize, 2 FomulaSimplifications, 19 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 228 SizeOfPredicates, 3 NumberOfNonLiveVariables, 49 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 1/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...