./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test14.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_5b0d58a6-cc0f-4ec2-8c5c-664d0e9e4625/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5b0d58a6-cc0f-4ec2-8c5c-664d0e9e4625/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5b0d58a6-cc0f-4ec2-8c5c-664d0e9e4625/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5b0d58a6-cc0f-4ec2-8c5c-664d0e9e4625/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test14.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5b0d58a6-cc0f-4ec2-8c5c-664d0e9e4625/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5b0d58a6-cc0f-4ec2-8c5c-664d0e9e4625/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 8aeea2893945070836fa246c32e0f0e8804eb1dc ....................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:09:05,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:09:05,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:09:05,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:09:05,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:09:05,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:09:05,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:09:05,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:09:05,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:09:05,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:09:05,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:09:05,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:09:05,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:09:05,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:09:05,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:09:05,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:09:05,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:09:05,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:09:05,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:09:05,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:09:05,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:09:05,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:09:05,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:09:05,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:09:05,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:09:05,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:09:05,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:09:05,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:09:05,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:09:05,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:09:05,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:09:05,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:09:05,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:09:05,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:09:05,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:09:05,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:09:05,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:09:05,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:09:05,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:09:05,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:09:05,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:09:05,188 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5b0d58a6-cc0f-4ec2-8c5c-664d0e9e4625/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:09:05,214 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:09:05,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:09:05,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:09:05,216 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:09:05,217 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:09:05,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:09:05,217 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:09:05,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:09:05,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:09:05,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:09:05,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:09:05,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:09:05,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:09:05,219 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:09:05,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:09:05,219 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:09:05,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:09:05,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:09:05,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:09:05,220 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:09:05,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:09:05,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:09:05,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:09:05,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:09:05,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:09:05,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:09:05,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:09:05,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:09:05,223 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:09:05,223 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_5b0d58a6-cc0f-4ec2-8c5c-664d0e9e4625/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5b0d58a6-cc0f-4ec2-8c5c-664d0e9e4625/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8aeea2893945070836fa246c32e0f0e8804eb1dc [2020-11-29 20:09:05,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:09:05,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:09:05,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:09:05,520 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:09:05,521 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:09:05,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5b0d58a6-cc0f-4ec2-8c5c-664d0e9e4625/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/test14.c [2020-11-29 20:09:05,610 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5b0d58a6-cc0f-4ec2-8c5c-664d0e9e4625/bin/uautomizer/data/0011f3ce7/7f18bdb018ac43eeab8c606772807b3c/FLAG83409b850 [2020-11-29 20:09:06,125 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:09:06,126 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5b0d58a6-cc0f-4ec2-8c5c-664d0e9e4625/sv-benchmarks/c/ldv-regression/test14.c [2020-11-29 20:09:06,139 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5b0d58a6-cc0f-4ec2-8c5c-664d0e9e4625/bin/uautomizer/data/0011f3ce7/7f18bdb018ac43eeab8c606772807b3c/FLAG83409b850 [2020-11-29 20:09:06,478 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5b0d58a6-cc0f-4ec2-8c5c-664d0e9e4625/bin/uautomizer/data/0011f3ce7/7f18bdb018ac43eeab8c606772807b3c [2020-11-29 20:09:06,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:09:06,483 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:09:06,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:09:06,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:09:06,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:09:06,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:09:06" (1/1) ... [2020-11-29 20:09:06,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a3cd08c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:09:06, skipping insertion in model container [2020-11-29 20:09:06,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:09:06" (1/1) ... [2020-11-29 20:09:06,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:09:06,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:09:06,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:09:06,750 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:09:06,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:09:06,806 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:09:06,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:09:06 WrapperNode [2020-11-29 20:09:06,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:09:06,811 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:09:06,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:09:06,812 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:09:06,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:09:06" (1/1) ... [2020-11-29 20:09:06,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:09:06" (1/1) ... [2020-11-29 20:09:06,856 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:09:06,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:09:06,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:09:06,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:09:06,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:09:06" (1/1) ... [2020-11-29 20:09:06,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:09:06" (1/1) ... [2020-11-29 20:09:06,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:09:06" (1/1) ... [2020-11-29 20:09:06,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:09:06" (1/1) ... [2020-11-29 20:09:06,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:09:06" (1/1) ... [2020-11-29 20:09:06,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:09:06" (1/1) ... [2020-11-29 20:09:06,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:09:06" (1/1) ... [2020-11-29 20:09:06,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:09:06,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:09:06,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:09:06,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:09:06,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:09:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5b0d58a6-cc0f-4ec2-8c5c-664d0e9e4625/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 [2020-11-29 20:09:06,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:09:06,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:09:06,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:09:06,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:09:06,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 20:09:06,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 20:09:07,242 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:09:07,243 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-29 20:09:07,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:09:07 BoogieIcfgContainer [2020-11-29 20:09:07,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:09:07,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:09:07,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:09:07,272 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:09:07,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:09:06" (1/3) ... [2020-11-29 20:09:07,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f0008d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:09:07, skipping insertion in model container [2020-11-29 20:09:07,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:09:06" (2/3) ... [2020-11-29 20:09:07,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f0008d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:09:07, skipping insertion in model container [2020-11-29 20:09:07,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:09:07" (3/3) ... [2020-11-29 20:09:07,277 INFO L111 eAbstractionObserver]: Analyzing ICFG test14.c [2020-11-29 20:09:07,317 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:09:07,322 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 20:09:07,355 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 20:09:07,409 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:09:07,409 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:09:07,409 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:09:07,409 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:09:07,410 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:09:07,410 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:09:07,410 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:09:07,410 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:09:07,434 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-11-29 20:09:07,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 20:09:07,441 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:09:07,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:09:07,443 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:09:07,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:09:07,451 INFO L82 PathProgramCache]: Analyzing trace with hash 119352366, now seen corresponding path program 1 times [2020-11-29 20:09:07,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:09:07,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016201145] [2020-11-29 20:09:07,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:09:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:09:07,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:09:07,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016201145] [2020-11-29 20:09:07,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:09:07,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:09:07,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973632671] [2020-11-29 20:09:07,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:09:07,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:09:07,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:09:07,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:09:07,740 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2020-11-29 20:09:07,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:09:07,848 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2020-11-29 20:09:07,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:09:07,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 20:09:07,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:09:07,862 INFO L225 Difference]: With dead ends: 21 [2020-11-29 20:09:07,862 INFO L226 Difference]: Without dead ends: 11 [2020-11-29 20:09:07,866 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 [2020-11-29 20:09:07,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-29 20:09:07,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-29 20:09:07,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-29 20:09:07,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-11-29 20:09:07,907 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2020-11-29 20:09:07,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:09:07,907 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-11-29 20:09:07,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:09:07,908 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-11-29 20:09:07,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 20:09:07,908 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:09:07,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:09:07,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:09:07,909 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:09:07,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:09:07,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1264891372, now seen corresponding path program 1 times [2020-11-29 20:09:07,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:09:07,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455952835] [2020-11-29 20:09:07,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:09:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:09:08,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:09:08,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455952835] [2020-11-29 20:09:08,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:09:08,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:09:08,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609121726] [2020-11-29 20:09:08,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:09:08,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:09:08,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:09:08,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:09:08,015 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 5 states. [2020-11-29 20:09:08,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:09:08,080 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2020-11-29 20:09:08,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:09:08,082 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-29 20:09:08,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:09:08,083 INFO L225 Difference]: With dead ends: 11 [2020-11-29 20:09:08,083 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 20:09:08,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:09:08,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 20:09:08,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 20:09:08,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 20:09:08,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 20:09:08,087 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-11-29 20:09:08,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:09:08,087 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:09:08,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:09:08,087 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:09:08,087 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 20:09:08,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:09:08,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 20:09:08,118 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 20:09:08,118 INFO L274 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-11-29 20:09:08,118 INFO L274 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-11-29 20:09:08,118 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-11-29 20:09:08,118 INFO L274 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-11-29 20:09:08,119 INFO L270 CegarLoopResult]: At program point L11-3(lines 9 12) the Hoare annotation is: (not (= ULTIMATE.start_main_~pc~0.base 0)) [2020-11-29 20:09:08,119 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-29 20:09:08,119 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 20:09:08,119 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 20:09:08,119 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 20:09:08,120 INFO L270 CegarLoopResult]: At program point L28(lines 14 29) the Hoare annotation is: (not (= ULTIMATE.start_main_~pc~0.base 0)) [2020-11-29 20:09:08,120 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-29 20:09:08,120 INFO L270 CegarLoopResult]: At program point L22(lines 14 29) the Hoare annotation is: false [2020-11-29 20:09:08,120 INFO L274 CegarLoopResult]: For program point L20(lines 20 21) no Hoare annotation was computed. [2020-11-29 20:09:08,120 INFO L274 CegarLoopResult]: For program point L20-2(lines 20 23) no Hoare annotation was computed. [2020-11-29 20:09:08,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:09:08 BoogieIcfgContainer [2020-11-29 20:09:08,150 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:09:08,151 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:09:08,151 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:09:08,152 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:09:08,152 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:09:07" (3/4) ... [2020-11-29 20:09:08,157 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 20:09:08,175 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-29 20:09:08,176 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 20:09:08,177 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:09:08,178 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:09:08,237 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5b0d58a6-cc0f-4ec2-8c5c-664d0e9e4625/bin/uautomizer/witness.graphml [2020-11-29 20:09:08,237 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:09:08,251 INFO L168 Benchmark]: Toolchain (without parser) took 1755.57 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 58.8 MB in the beginning and 56.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.1 GB. [2020-11-29 20:09:08,252 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 88.1 MB. Free memory was 47.6 MB in the beginning and 47.5 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:09:08,257 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.59 ms. Allocated memory is still 88.1 MB. Free memory was 58.6 MB in the beginning and 65.9 MB in the end (delta: -7.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:09:08,258 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.97 ms. Allocated memory is still 88.1 MB. Free memory was 65.9 MB in the beginning and 64.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:09:08,258 INFO L168 Benchmark]: Boogie Preprocessor took 24.60 ms. Allocated memory is still 88.1 MB. Free memory was 64.3 MB in the beginning and 63.5 MB in the end (delta: 859.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:09:08,259 INFO L168 Benchmark]: RCFGBuilder took 362.61 ms. Allocated memory is still 88.1 MB. Free memory was 63.2 MB in the beginning and 49.4 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 20:09:08,260 INFO L168 Benchmark]: TraceAbstraction took 889.55 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 49.1 MB in the beginning and 59.8 MB in the end (delta: -10.7 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:09:08,260 INFO L168 Benchmark]: Witness Printer took 86.28 ms. Allocated memory is still 109.1 MB. Free memory was 59.8 MB in the beginning and 56.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:09:08,269 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 88.1 MB. Free memory was 47.6 MB in the beginning and 47.5 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 322.59 ms. Allocated memory is still 88.1 MB. Free memory was 58.6 MB in the beginning and 65.9 MB in the end (delta: -7.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.97 ms. Allocated memory is still 88.1 MB. Free memory was 65.9 MB in the beginning and 64.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.60 ms. Allocated memory is still 88.1 MB. Free memory was 64.3 MB in the beginning and 63.5 MB in the end (delta: 859.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 362.61 ms. Allocated memory is still 88.1 MB. Free memory was 63.2 MB in the beginning and 49.4 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 889.55 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 49.1 MB in the beginning and 59.8 MB in the end (delta: -10.7 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. * Witness Printer took 86.28 ms. Allocated memory is still 109.1 MB. Free memory was 59.8 MB in the beginning and 56.7 MB in the end (delta: 3.1 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: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: !(pc == 0) - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: !(pc == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 18 SDslu, 21 SDs, 0 SdLazy, 14 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 3 LocationsWithAnnotation, 3 PreInvPairs, 4 NumberOfFragments, 9 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 326 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...