./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/simple_3-2.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_1aa90611-3d03-43f2-847e-ac0f9d9d0f82/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1aa90611-3d03-43f2-847e-ac0f9d9d0f82/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1aa90611-3d03-43f2-847e-ac0f9d9d0f82/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1aa90611-3d03-43f2-847e-ac0f9d9d0f82/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/simple_3-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1aa90611-3d03-43f2-847e-ac0f9d9d0f82/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1aa90611-3d03-43f2-847e-ac0f9d9d0f82/bin/uautomizer --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 567ad22bceea9f434c69cd01babdc4ad1d30ddf7 ........................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:13:43,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:13:43,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:13:43,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:13:43,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:13:43,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:13:43,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:13:43,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:13:43,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:13:43,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:13:43,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:13:43,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:13:43,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:13:43,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:13:43,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:13:43,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:13:43,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:13:43,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:13:43,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:13:43,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:13:43,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:13:43,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:13:43,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:13:43,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:13:43,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:13:43,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:13:43,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:13:43,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:13:43,150 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:13:43,151 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:13:43,152 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:13:43,153 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:13:43,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:13:43,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:13:43,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:13:43,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:13:43,157 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:13:43,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:13:43,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:13:43,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:13:43,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:13:43,160 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1aa90611-3d03-43f2-847e-ac0f9d9d0f82/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:13:43,183 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:13:43,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:13:43,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:13:43,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:13:43,185 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:13:43,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:13:43,186 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:13:43,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:13:43,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:13:43,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:13:43,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:13:43,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:13:43,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:13:43,187 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:13:43,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:13:43,188 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:13:43,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:13:43,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:13:43,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:13:43,189 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:13:43,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:13:43,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:13:43,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:13:43,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:13:43,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:13:43,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:13:43,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:13:43,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:13:43,191 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:13:43,191 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-vcloud-master/worker/run_dir_1aa90611-3d03-43f2-847e-ac0f9d9d0f82/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1aa90611-3d03-43f2-847e-ac0f9d9d0f82/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 567ad22bceea9f434c69cd01babdc4ad1d30ddf7 [2020-11-28 03:13:43,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:13:43,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:13:43,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:13:43,490 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:13:43,492 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:13:43,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1aa90611-3d03-43f2-847e-ac0f9d9d0f82/bin/uautomizer/../../sv-benchmarks/c/loop-acceleration/simple_3-2.c [2020-11-28 03:13:43,588 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1aa90611-3d03-43f2-847e-ac0f9d9d0f82/bin/uautomizer/data/321f5f79c/e78e86c26de049e3acd41c1d839f1b65/FLAG43ef29590 [2020-11-28 03:13:44,054 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:13:44,055 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1aa90611-3d03-43f2-847e-ac0f9d9d0f82/sv-benchmarks/c/loop-acceleration/simple_3-2.c [2020-11-28 03:13:44,060 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1aa90611-3d03-43f2-847e-ac0f9d9d0f82/bin/uautomizer/data/321f5f79c/e78e86c26de049e3acd41c1d839f1b65/FLAG43ef29590 [2020-11-28 03:13:44,450 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1aa90611-3d03-43f2-847e-ac0f9d9d0f82/bin/uautomizer/data/321f5f79c/e78e86c26de049e3acd41c1d839f1b65 [2020-11-28 03:13:44,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:13:44,454 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:13:44,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:13:44,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:13:44,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:13:44,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:44" (1/1) ... [2020-11-28 03:13:44,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2322c492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:44, skipping insertion in model container [2020-11-28 03:13:44,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:44" (1/1) ... [2020-11-28 03:13:44,469 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:13:44,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:13:44,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:13:44,672 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:13:44,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:13:44,701 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:13:44,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:44 WrapperNode [2020-11-28 03:13:44,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:13:44,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:13:44,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:13:44,703 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:13:44,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:44" (1/1) ... [2020-11-28 03:13:44,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:44" (1/1) ... [2020-11-28 03:13:44,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:13:44,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:13:44,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:13:44,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:13:44,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:44" (1/1) ... [2020-11-28 03:13:44,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:44" (1/1) ... [2020-11-28 03:13:44,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:44" (1/1) ... [2020-11-28 03:13:44,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:44" (1/1) ... [2020-11-28 03:13:44,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:44" (1/1) ... [2020-11-28 03:13:44,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:44" (1/1) ... [2020-11-28 03:13:44,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:44" (1/1) ... [2020-11-28 03:13:44,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:13:44,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:13:44,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:13:44,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:13:44,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1aa90611-3d03-43f2-847e-ac0f9d9d0f82/bin/uautomizer/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 [2020-11-28 03:13:44,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:13:44,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:13:44,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:13:44,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:13:45,162 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:13:45,164 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 03:13:45,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:45 BoogieIcfgContainer [2020-11-28 03:13:45,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:13:45,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:13:45,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:13:45,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:13:45,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:13:44" (1/3) ... [2020-11-28 03:13:45,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3387a662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:13:45, skipping insertion in model container [2020-11-28 03:13:45,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:44" (2/3) ... [2020-11-28 03:13:45,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3387a662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:13:45, skipping insertion in model container [2020-11-28 03:13:45,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:45" (3/3) ... [2020-11-28 03:13:45,178 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_3-2.c [2020-11-28 03:13:45,194 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:13:45,198 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:13:45,210 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:13:45,247 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:13:45,248 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:13:45,248 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:13:45,248 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:13:45,249 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:13:45,249 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:13:45,250 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:13:45,250 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:13:45,269 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-11-28 03:13:45,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 03:13:45,275 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:45,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:13:45,277 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:45,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:45,284 INFO L82 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2020-11-28 03:13:45,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:45,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81468782] [2020-11-28 03:13:45,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:45,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:45,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81468782] [2020-11-28 03:13:45,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:45,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:13:45,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154989448] [2020-11-28 03:13:45,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:13:45,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:45,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:13:45,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:13:45,566 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 4 states. [2020-11-28 03:13:45,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:45,630 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2020-11-28 03:13:45,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:13:45,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-28 03:13:45,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:45,640 INFO L225 Difference]: With dead ends: 24 [2020-11-28 03:13:45,640 INFO L226 Difference]: Without dead ends: 8 [2020-11-28 03:13:45,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:13:45,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-28 03:13:45,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-28 03:13:45,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-28 03:13:45,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-28 03:13:45,674 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-11-28 03:13:45,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:45,674 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-11-28 03:13:45,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:13:45,675 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-28 03:13:45,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 03:13:45,675 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:45,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:45,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:13:45,676 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:45,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:45,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2020-11-28 03:13:45,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:45,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387158269] [2020-11-28 03:13:45,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:45,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:45,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387158269] [2020-11-28 03:13:45,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674598697] [2020-11-28 03:13:45,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1aa90611-3d03-43f2-847e-ac0f9d9d0f82/bin/uautomizer/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 [2020-11-28 03:13:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:45,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:13:45,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:13:45,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:45,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:13:45,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-11-28 03:13:45,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202225840] [2020-11-28 03:13:45,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:13:45,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:45,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:13:45,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:13:45,967 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2020-11-28 03:13:46,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:46,064 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2020-11-28 03:13:46,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:13:46,064 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2020-11-28 03:13:46,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:46,065 INFO L225 Difference]: With dead ends: 11 [2020-11-28 03:13:46,065 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:13:46,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:13:46,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:13:46,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:13:46,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:13:46,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:13:46,066 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-11-28 03:13:46,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:46,067 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:13:46,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:13:46,067 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:13:46,067 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:13:46,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 03:13:46,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:13:46,331 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:13:46,331 INFO L270 CegarLoopResult]: At program point L17-2(lines 17 19) the Hoare annotation is: (or (let ((.cse0 (div ULTIMATE.start_main_~x~0 2))) (and (< 0 .cse0) (<= ULTIMATE.start_main_~x~0 (* 2 .cse0)))) (= ULTIMATE.start_main_~x~0 0)) [2020-11-28 03:13:46,332 INFO L274 CegarLoopResult]: For program point L17-3(lines 17 19) no Hoare annotation was computed. [2020-11-28 03:13:46,332 INFO L274 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-11-28 03:13:46,332 INFO L270 CegarLoopResult]: At program point L7-2(lines 1 22) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2020-11-28 03:13:46,332 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 03:13:46,332 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:13:46,332 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:13:46,332 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:13:46,332 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 03:13:46,333 INFO L274 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-11-28 03:13:46,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:13:46 BoogieIcfgContainer [2020-11-28 03:13:46,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:13:46,359 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:13:46,359 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:13:46,360 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:13:46,360 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:45" (3/4) ... [2020-11-28 03:13:46,363 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:13:46,372 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-28 03:13:46,373 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:13:46,373 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:13:46,373 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:13:46,400 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1aa90611-3d03-43f2-847e-ac0f9d9d0f82/bin/uautomizer/witness.graphml [2020-11-28 03:13:46,400 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:13:46,402 INFO L168 Benchmark]: Toolchain (without parser) took 1947.09 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 60.1 MB in the beginning and 77.0 MB in the end (delta: -16.9 MB). Peak memory consumption was 924.6 kB. Max. memory is 16.1 GB. [2020-11-28 03:13:46,402 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 92.3 MB. Free memory is still 50.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:46,403 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.74 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 59.9 MB in the beginning and 88.2 MB in the end (delta: -28.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:46,404 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.22 ms. Allocated memory is still 111.1 MB. Free memory was 88.2 MB in the beginning and 87.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:46,404 INFO L168 Benchmark]: Boogie Preprocessor took 20.06 ms. Allocated memory is still 111.1 MB. Free memory was 87.2 MB in the beginning and 86.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:46,405 INFO L168 Benchmark]: RCFGBuilder took 410.94 ms. Allocated memory is still 111.1 MB. Free memory was 86.0 MB in the beginning and 75.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:46,406 INFO L168 Benchmark]: TraceAbstraction took 1188.01 ms. Allocated memory is still 111.1 MB. Free memory was 75.1 MB in the beginning and 79.1 MB in the end (delta: -4.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:46,406 INFO L168 Benchmark]: Witness Printer took 41.56 ms. Allocated memory is still 111.1 MB. Free memory was 79.1 MB in the beginning and 77.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:46,410 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 92.3 MB. Free memory is still 50.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 246.74 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 59.9 MB in the beginning and 88.2 MB in the end (delta: -28.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.22 ms. Allocated memory is still 111.1 MB. Free memory was 88.2 MB in the beginning and 87.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.06 ms. Allocated memory is still 111.1 MB. Free memory was 87.2 MB in the beginning and 86.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 410.94 ms. Allocated memory is still 111.1 MB. Free memory was 86.0 MB in the beginning and 75.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1188.01 ms. Allocated memory is still 111.1 MB. Free memory was 75.1 MB in the beginning and 79.1 MB in the end (delta: -4.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 41.56 ms. Allocated memory is still 111.1 MB. Free memory was 79.1 MB in the beginning and 77.0 MB in the end (delta: 2.1 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: 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: 17]: Loop Invariant Derived loop invariant: (0 < x / 2 && x <= 2 * (x / 2)) || x == 0 - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: !(0 == cond) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 11 SDslu, 16 SDs, 0 SdLazy, 30 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 6 NumberOfFragments, 21 HoareAnnotationTreeSize, 2 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 354 SizeOfPredicates, 3 NumberOfNonLiveVariables, 46 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 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...