./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_8.i -s /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/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 9359a1ca6617de6131ac944004153af0ea740bb1 ................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_8.i -s /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/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 9359a1ca6617de6131ac944004153af0ea740bb1 ..................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 19:17:54,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:17:54,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:17:54,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:17:54,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:17:54,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:17:54,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:17:54,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:17:54,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:17:54,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:17:54,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:17:54,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:17:54,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:17:54,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:17:54,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:17:54,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:17:54,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:17:54,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:17:54,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:17:54,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:17:54,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:17:54,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:17:54,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:17:54,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:17:54,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:17:54,258 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:17:54,258 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:17:54,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:17:54,259 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:17:54,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:17:54,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:17:54,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:17:54,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:17:54,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:17:54,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:17:54,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:17:54,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:17:54,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:17:54,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:17:54,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:17:54,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:17:54,267 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 19:17:54,289 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:17:54,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:17:54,290 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:17:54,290 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:17:54,290 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:17:54,291 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:17:54,291 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 19:17:54,291 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:17:54,291 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:17:54,291 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 19:17:54,291 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 19:17:54,292 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:17:54,292 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 19:17:54,292 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 19:17:54,292 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 19:17:54,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:17:54,293 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 19:17:54,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 19:17:54,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 19:17:54,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:17:54,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 19:17:54,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:17:54,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 19:17:54,294 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 19:17:54,294 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 19:17:54,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 19:17:54,295 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:17:54,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 19:17:54,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:17:54,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:17:54,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:17:54,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:17:54,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:17:54,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 19:17:54,296 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 19:17:54,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 19:17:54,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 19:17:54,297 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:17:54,297 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:17:54,297 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_131fb089-c0f7-4535-b627-92a5af715fc6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9359a1ca6617de6131ac944004153af0ea740bb1 [2020-12-09 19:17:54,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:17:54,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:17:54,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:17:54,516 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:17:54,517 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:17:54,518 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/bin/utaipan/../../sv-benchmarks/c/floats-cdfpl/square_8.i [2020-12-09 19:17:54,558 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/bin/utaipan/data/024840fe7/a67e09f095d6496da1921e7267572be8/FLAG947bc4ec5 [2020-12-09 19:17:54,926 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:17:54,926 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/sv-benchmarks/c/floats-cdfpl/square_8.i [2020-12-09 19:17:54,932 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/bin/utaipan/data/024840fe7/a67e09f095d6496da1921e7267572be8/FLAG947bc4ec5 [2020-12-09 19:17:54,942 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/bin/utaipan/data/024840fe7/a67e09f095d6496da1921e7267572be8 [2020-12-09 19:17:54,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:17:54,946 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:17:54,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:17:54,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:17:54,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:17:54,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:17:54" (1/1) ... [2020-12-09 19:17:54,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56809522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:17:54, skipping insertion in model container [2020-12-09 19:17:54,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:17:54" (1/1) ... [2020-12-09 19:17:54,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:17:54,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:17:55,076 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/sv-benchmarks/c/floats-cdfpl/square_8.i[1127,1140] [2020-12-09 19:17:55,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:17:55,085 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:17:55,096 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/sv-benchmarks/c/floats-cdfpl/square_8.i[1127,1140] [2020-12-09 19:17:55,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:17:55,107 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:17:55,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:17:55 WrapperNode [2020-12-09 19:17:55,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:17:55,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:17:55,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:17:55,108 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:17:55,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:17:55" (1/1) ... [2020-12-09 19:17:55,119 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:17:55" (1/1) ... [2020-12-09 19:17:55,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:17:55,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:17:55,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:17:55,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:17:55,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:17:55" (1/1) ... [2020-12-09 19:17:55,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:17:55" (1/1) ... [2020-12-09 19:17:55,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:17:55" (1/1) ... [2020-12-09 19:17:55,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:17:55" (1/1) ... [2020-12-09 19:17:55,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:17:55" (1/1) ... [2020-12-09 19:17:55,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:17:55" (1/1) ... [2020-12-09 19:17:55,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:17:55" (1/1) ... [2020-12-09 19:17:55,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:17:55,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:17:55,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:17:55,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:17:55,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:17:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:17:55,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 19:17:55,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 19:17:55,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:17:55,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:17:55,409 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:17:55,409 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-09 19:17:55,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:17:55 BoogieIcfgContainer [2020-12-09 19:17:55,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:17:55,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:17:55,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:17:55,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:17:55,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:17:54" (1/3) ... [2020-12-09 19:17:55,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6005879b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:17:55, skipping insertion in model container [2020-12-09 19:17:55,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:17:55" (2/3) ... [2020-12-09 19:17:55,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6005879b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:17:55, skipping insertion in model container [2020-12-09 19:17:55,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:17:55" (3/3) ... [2020-12-09 19:17:55,418 INFO L111 eAbstractionObserver]: Analyzing ICFG square_8.i [2020-12-09 19:17:55,431 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:17:55,433 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 19:17:55,443 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 19:17:55,461 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:17:55,462 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 19:17:55,462 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:17:55,462 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:17:55,462 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:17:55,462 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:17:55,462 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:17:55,462 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:17:55,470 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2020-12-09 19:17:55,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-09 19:17:55,474 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:17:55,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-09 19:17:55,474 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:17:55,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:17:55,478 INFO L82 PathProgramCache]: Analyzing trace with hash 56123, now seen corresponding path program 1 times [2020-12-09 19:17:55,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:17:55,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857446443] [2020-12-09 19:17:55,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:17:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:17:55,558 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:17:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:17:55,572 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:17:55,589 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 19:17:55,589 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 19:17:55,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 19:17:55,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:17:55 BoogieIcfgContainer [2020-12-09 19:17:55,603 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 19:17:55,604 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 19:17:55,604 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 19:17:55,604 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 19:17:55,605 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:17:55" (3/4) ... [2020-12-09 19:17:55,608 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 19:17:55,608 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 19:17:55,610 INFO L168 Benchmark]: Toolchain (without parser) took 662.95 ms. Allocated memory is still 90.2 MB. Free memory was 49.1 MB in the beginning and 44.6 MB in the end (delta: 4.5 MB). Peak memory consumption was 3.9 MB. Max. memory is 16.1 GB. [2020-12-09 19:17:55,610 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 90.2 MB. Free memory was 65.2 MB in the beginning and 65.0 MB in the end (delta: 115.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:17:55,611 INFO L168 Benchmark]: CACSL2BoogieTranslator took 160.66 ms. Allocated memory is still 90.2 MB. Free memory was 48.9 MB in the beginning and 61.3 MB in the end (delta: -12.5 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2020-12-09 19:17:55,611 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.83 ms. Allocated memory is still 90.2 MB. Free memory was 61.3 MB in the beginning and 60.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:17:55,612 INFO L168 Benchmark]: Boogie Preprocessor took 13.24 ms. Allocated memory is still 90.2 MB. Free memory was 60.0 MB in the beginning and 58.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:17:55,613 INFO L168 Benchmark]: RCFGBuilder took 265.88 ms. Allocated memory is still 90.2 MB. Free memory was 58.9 MB in the beginning and 56.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 19:17:55,613 INFO L168 Benchmark]: TraceAbstraction took 190.87 ms. Allocated memory is still 90.2 MB. Free memory was 56.8 MB in the beginning and 45.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 19:17:55,614 INFO L168 Benchmark]: Witness Printer took 3.77 ms. Allocated memory is still 90.2 MB. Free memory was 45.0 MB in the beginning and 44.6 MB in the end (delta: 395.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:17:55,617 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 90.2 MB. Free memory was 65.2 MB in the beginning and 65.0 MB in the end (delta: 115.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 160.66 ms. Allocated memory is still 90.2 MB. Free memory was 48.9 MB in the beginning and 61.3 MB in the end (delta: -12.5 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 22.83 ms. Allocated memory is still 90.2 MB. Free memory was 61.3 MB in the beginning and 60.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 13.24 ms. Allocated memory is still 90.2 MB. Free memory was 60.0 MB in the beginning and 58.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 265.88 ms. Allocated memory is still 90.2 MB. Free memory was 58.9 MB in the beginning and 56.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 190.87 ms. Allocated memory is still 90.2 MB. Free memory was 56.8 MB in the beginning and 45.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 3.77 ms. Allocated memory is still 90.2 MB. Free memory was 45.0 MB in the beginning and 44.6 MB in the end (delta: 395.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 29]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 28, overapproximation of someBinaryArithmeticFLOAToperation at line 26. Possible FailurePath: [L20] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L23] float x = IN; [L25-L26] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L28] COND TRUE !(result >= 0.0f && result < 1.5f) [L29] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 19:17:57,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:17:57,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:17:57,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:17:57,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:17:57,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:17:57,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:17:57,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:17:57,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:17:57,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:17:57,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:17:57,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:17:57,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:17:57,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:17:57,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:17:57,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:17:57,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:17:57,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:17:57,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:17:57,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:17:57,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:17:57,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:17:57,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:17:57,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:17:57,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:17:57,280 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:17:57,281 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:17:57,282 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:17:57,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:17:57,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:17:57,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:17:57,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:17:57,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:17:57,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:17:57,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:17:57,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:17:57,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:17:57,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:17:57,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:17:57,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:17:57,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:17:57,289 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 19:17:57,320 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:17:57,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:17:57,321 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:17:57,322 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:17:57,322 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:17:57,322 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:17:57,322 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:17:57,322 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:17:57,323 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:17:57,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:17:57,324 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 19:17:57,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 19:17:57,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:17:57,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 19:17:57,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:17:57,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 19:17:57,325 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 19:17:57,325 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 19:17:57,325 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 19:17:57,325 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 19:17:57,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 19:17:57,326 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:17:57,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 19:17:57,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:17:57,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 19:17:57,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:17:57,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:17:57,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:17:57,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:17:57,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 19:17:57,328 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 19:17:57,328 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 19:17:57,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 19:17:57,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:17:57,328 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:17:57,329 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9359a1ca6617de6131ac944004153af0ea740bb1 [2020-12-09 19:17:57,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:17:57,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:17:57,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:17:57,580 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:17:57,581 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:17:57,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/bin/utaipan/../../sv-benchmarks/c/floats-cdfpl/square_8.i [2020-12-09 19:17:57,622 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/bin/utaipan/data/08a5ac4a7/11f2d467a7e248d7a1dc95ea7295b5fc/FLAGa99a4737d [2020-12-09 19:17:57,994 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:17:57,994 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/sv-benchmarks/c/floats-cdfpl/square_8.i [2020-12-09 19:17:57,998 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/bin/utaipan/data/08a5ac4a7/11f2d467a7e248d7a1dc95ea7295b5fc/FLAGa99a4737d [2020-12-09 19:17:58,008 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/bin/utaipan/data/08a5ac4a7/11f2d467a7e248d7a1dc95ea7295b5fc [2020-12-09 19:17:58,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:17:58,011 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:17:58,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:17:58,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:17:58,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:17:58,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:17:58" (1/1) ... [2020-12-09 19:17:58,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c42b386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:17:58, skipping insertion in model container [2020-12-09 19:17:58,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:17:58" (1/1) ... [2020-12-09 19:17:58,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:17:58,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:17:58,134 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/sv-benchmarks/c/floats-cdfpl/square_8.i[1127,1140] [2020-12-09 19:17:58,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:17:58,147 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:17:58,159 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/sv-benchmarks/c/floats-cdfpl/square_8.i[1127,1140] [2020-12-09 19:17:58,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:17:58,175 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:17:58,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:17:58 WrapperNode [2020-12-09 19:17:58,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:17:58,176 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:17:58,176 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:17:58,176 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:17:58,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:17:58" (1/1) ... [2020-12-09 19:17:58,195 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:17:58" (1/1) ... [2020-12-09 19:17:58,210 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:17:58,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:17:58,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:17:58,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:17:58,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:17:58" (1/1) ... [2020-12-09 19:17:58,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:17:58" (1/1) ... [2020-12-09 19:17:58,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:17:58" (1/1) ... [2020-12-09 19:17:58,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:17:58" (1/1) ... [2020-12-09 19:17:58,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:17:58" (1/1) ... [2020-12-09 19:17:58,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:17:58" (1/1) ... [2020-12-09 19:17:58,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:17:58" (1/1) ... [2020-12-09 19:17:58,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:17:58,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:17:58,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:17:58,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:17:58,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:17:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:17:58,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 19:17:58,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 19:17:58,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:17:58,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:18:00,489 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:18:00,489 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-09 19:18:00,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:18:00 BoogieIcfgContainer [2020-12-09 19:18:00,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:18:00,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:18:00,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:18:00,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:18:00,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:17:58" (1/3) ... [2020-12-09 19:18:00,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6da540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:18:00, skipping insertion in model container [2020-12-09 19:18:00,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:17:58" (2/3) ... [2020-12-09 19:18:00,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6da540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:18:00, skipping insertion in model container [2020-12-09 19:18:00,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:18:00" (3/3) ... [2020-12-09 19:18:00,497 INFO L111 eAbstractionObserver]: Analyzing ICFG square_8.i [2020-12-09 19:18:00,506 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:18:00,508 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 19:18:00,515 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 19:18:00,530 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:18:00,530 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 19:18:00,530 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:18:00,531 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:18:00,531 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:18:00,531 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:18:00,531 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:18:00,531 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:18:00,538 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-12-09 19:18:00,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 19:18:00,541 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:18:00,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 19:18:00,542 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:18:00,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:18:00,546 INFO L82 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2020-12-09 19:18:00,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:18:00,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840073379] [2020-12-09 19:18:00,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 19:18:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:18:01,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 19:18:01,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:18:01,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:18:01,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:18:01,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840073379] [2020-12-09 19:18:01,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:18:01,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:18:01,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016887229] [2020-12-09 19:18:01,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 19:18:01,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:18:01,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 19:18:01,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 19:18:01,047 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-12-09 19:18:01,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:18:01,056 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-12-09 19:18:01,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 19:18:01,057 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-09 19:18:01,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:18:01,062 INFO L225 Difference]: With dead ends: 19 [2020-12-09 19:18:01,062 INFO L226 Difference]: Without dead ends: 7 [2020-12-09 19:18:01,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 19:18:01,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-12-09 19:18:01,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-12-09 19:18:01,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-12-09 19:18:01,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2020-12-09 19:18:01,084 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2020-12-09 19:18:01,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:18:01,084 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2020-12-09 19:18:01,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 19:18:01,084 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-12-09 19:18:01,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 19:18:01,084 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:18:01,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 19:18:01,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 19:18:01,286 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:18:01,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:18:01,289 INFO L82 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2020-12-09 19:18:01,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:18:01,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071387062] [2020-12-09 19:18:01,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 19:18:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:18:51,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 19:18:51,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:18:54,011 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.lt ULTIMATE.start_main_~IN~0 .cse0) (fp.geq ULTIMATE.start_main_~IN~0 (_ +zero 8 24)) (= c_ULTIMATE.start_main_~result~0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2020-12-09 19:18:56,075 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 19:19:06,391 WARN L838 $PredicateComparison]: unable to prove that (or (exists ((ULTIMATE.start_main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (_ +zero 8 24))) (fp.lt ULTIMATE.start_main_~IN~0 .cse0) (fp.geq ULTIMATE.start_main_~IN~0 (_ +zero 8 24))))) (exists ((ULTIMATE.start_main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (fp.lt ULTIMATE.start_main_~IN~0 .cse1) (fp.geq ULTIMATE.start_main_~IN~0 (_ +zero 8 24)))))) is different from false [2020-12-09 19:19:08,448 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((ULTIMATE.start_main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (_ +zero 8 24))) (fp.lt ULTIMATE.start_main_~IN~0 .cse0) (fp.geq ULTIMATE.start_main_~IN~0 (_ +zero 8 24))))) (exists ((ULTIMATE.start_main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (fp.lt ULTIMATE.start_main_~IN~0 .cse1) (fp.geq ULTIMATE.start_main_~IN~0 (_ +zero 8 24)))))) is different from true [2020-12-09 19:19:08,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:19:08,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:19:08,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071387062] [2020-12-09 19:19:08,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:19:08,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 19:19:08,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683041211] [2020-12-09 19:19:08,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 19:19:08,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:19:08,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 19:19:08,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2020-12-09 19:19:08,452 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand 7 states. [2020-12-09 19:19:08,673 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 13 [2020-12-09 19:19:10,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:19:10,859 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-12-09 19:19:10,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 19:19:10,920 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2020-12-09 19:19:10,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:19:10,920 INFO L225 Difference]: With dead ends: 7 [2020-12-09 19:19:10,921 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 19:19:10,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=18, Invalid=17, Unknown=3, NotChecked=18, Total=56 [2020-12-09 19:19:10,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 19:19:10,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 19:19:10,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 19:19:10,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 19:19:10,922 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2020-12-09 19:19:10,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:19:10,922 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 19:19:10,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 19:19:10,922 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 19:19:10,922 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 19:19:11,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 19:19:11,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 19:19:11,152 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 19:19:11,152 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 19:19:11,152 INFO L265 CegarLoopResult]: At program point L31(lines 18 32) the Hoare annotation is: true [2020-12-09 19:19:11,152 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 19:19:11,152 INFO L262 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-12-09 19:19:11,152 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 19:19:11,152 INFO L262 CegarLoopResult]: For program point L28(lines 28 29) no Hoare annotation was computed. [2020-12-09 19:19:11,152 INFO L262 CegarLoopResult]: For program point L28-2(lines 28 29) no Hoare annotation was computed. [2020-12-09 19:19:11,152 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 29) no Hoare annotation was computed. [2020-12-09 19:19:11,152 INFO L262 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-12-09 19:19:11,152 INFO L262 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-12-09 19:19:11,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:19:11 BoogieIcfgContainer [2020-12-09 19:19:11,157 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 19:19:11,157 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 19:19:11,157 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 19:19:11,158 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 19:19:11,158 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:18:00" (3/4) ... [2020-12-09 19:19:11,160 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 19:19:11,166 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-09 19:19:11,166 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 19:19:11,166 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 19:19:11,166 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 19:19:11,187 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_131fb089-c0f7-4535-b627-92a5af715fc6/bin/utaipan/witness.graphml [2020-12-09 19:19:11,187 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 19:19:11,188 INFO L168 Benchmark]: Toolchain (without parser) took 73176.13 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 34.1 MB in the beginning and 32.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. [2020-12-09 19:19:11,188 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 54.5 MB. Free memory was 37.2 MB in the beginning and 37.1 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:19:11,188 INFO L168 Benchmark]: CACSL2BoogieTranslator took 163.78 ms. Allocated memory is still 54.5 MB. Free memory was 33.8 MB in the beginning and 39.0 MB in the end (delta: -5.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 19:19:11,189 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.57 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 39.0 MB in the beginning and 52.7 MB in the end (delta: -13.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:19:11,189 INFO L168 Benchmark]: Boogie Preprocessor took 17.69 ms. Allocated memory is still 69.2 MB. Free memory was 52.7 MB in the beginning and 51.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:19:11,190 INFO L168 Benchmark]: RCFGBuilder took 2262.28 ms. Allocated memory is still 69.2 MB. Free memory was 51.5 MB in the beginning and 40.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 19:19:11,190 INFO L168 Benchmark]: TraceAbstraction took 70665.05 ms. Allocated memory is still 69.2 MB. Free memory was 40.2 MB in the beginning and 34.4 MB in the end (delta: 5.8 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2020-12-09 19:19:11,191 INFO L168 Benchmark]: Witness Printer took 29.34 ms. Allocated memory is still 69.2 MB. Free memory was 34.4 MB in the beginning and 32.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:19:11,193 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 54.5 MB. Free memory was 37.2 MB in the beginning and 37.1 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 163.78 ms. Allocated memory is still 54.5 MB. Free memory was 33.8 MB in the beginning and 39.0 MB in the end (delta: -5.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.57 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 39.0 MB in the beginning and 52.7 MB in the end (delta: -13.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.69 ms. Allocated memory is still 69.2 MB. Free memory was 52.7 MB in the beginning and 51.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2262.28 ms. Allocated memory is still 69.2 MB. Free memory was 51.5 MB in the beginning and 40.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 70665.05 ms. Allocated memory is still 69.2 MB. Free memory was 40.2 MB in the beginning and 34.4 MB in the end (delta: 5.8 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. * Witness Printer took 29.34 ms. Allocated memory is still 69.2 MB. Free memory was 34.4 MB in the beginning and 32.3 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: 29]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 70.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 3 SDslu, 0 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5s 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, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 50.7s SatisfiabilityAnalysisTime, 16.7s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 2 QuantifiedInterpolants, 1280 SizeOfPredicates, 6 NumberOfNonLiveVariables, 52 ConjunctsInSsa, 8 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...