./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.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_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/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 7f8d72d06ca136037e1a4f2d3dda81b71758b03c ...................................................................................................................................................................................................................................................................................................... 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_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/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 7f8d72d06ca136037e1a4f2d3dda81b71758b03c ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:11:12,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:11:12,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:11:12,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:11:12,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:11:12,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:11:12,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:11:12,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:11:12,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:11:12,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:11:12,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:11:12,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:11:12,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:11:12,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:11:12,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:11:12,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:11:12,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:11:12,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:11:12,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:11:12,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:11:12,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:11:12,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:11:12,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:11:12,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:11:12,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:11:12,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:11:12,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:11:12,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:11:12,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:11:12,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:11:12,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:11:12,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:11:12,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:11:12,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:11:12,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:11:12,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:11:12,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:11:12,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:11:12,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:11:12,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:11:12,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:11:12,192 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:11:12,241 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:11:12,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:11:12,243 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:11:12,244 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:11:12,244 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:11:12,244 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:11:12,244 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:11:12,244 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:11:12,245 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:11:12,245 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:11:12,246 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:11:12,246 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:11:12,246 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:11:12,247 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:11:12,247 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:11:12,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:11:12,248 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:11:12,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:11:12,248 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:11:12,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:11:12,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:11:12,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:11:12,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:11:12,249 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:11:12,249 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:11:12,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:11:12,250 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:11:12,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:11:12,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:11:12,250 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:11:12,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:11:12,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:11:12,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:11:12,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:11:12,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:11:12,252 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:11:12,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:11:12,252 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:11:12,252 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:11:12,253 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:11:12,253 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_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f8d72d06ca136037e1a4f2d3dda81b71758b03c [2020-11-30 02:11:12,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:11:12,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:11:12,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:11:12,578 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:11:12,579 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:11:12,580 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2020-11-30 02:11:12,663 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan/data/56a3b4dd5/55060f9fac1f4ca1a0e2e9816fcf8201/FLAGcb51569b9 [2020-11-30 02:11:13,224 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:11:13,224 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2020-11-30 02:11:13,236 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan/data/56a3b4dd5/55060f9fac1f4ca1a0e2e9816fcf8201/FLAGcb51569b9 [2020-11-30 02:11:13,603 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan/data/56a3b4dd5/55060f9fac1f4ca1a0e2e9816fcf8201 [2020-11-30 02:11:13,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:11:13,607 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:11:13,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:11:13,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:11:13,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:11:13,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:11:13" (1/1) ... [2020-11-30 02:11:13,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61936c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:11:13, skipping insertion in model container [2020-11-30 02:11:13,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:11:13" (1/1) ... [2020-11-30 02:11:13,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:11:13,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:11:13,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:11:13,878 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:11:13,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:11:13,917 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:11:13,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:11:13 WrapperNode [2020-11-30 02:11:13,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:11:13,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:11:13,919 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:11:13,919 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:11:13,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:11:13" (1/1) ... [2020-11-30 02:11:13,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:11:13" (1/1) ... [2020-11-30 02:11:13,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:11:13,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:11:13,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:11:13,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:11:13,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:11:13" (1/1) ... [2020-11-30 02:11:13,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:11:13" (1/1) ... [2020-11-30 02:11:13,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:11:13" (1/1) ... [2020-11-30 02:11:13,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:11:13" (1/1) ... [2020-11-30 02:11:13,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:11:13" (1/1) ... [2020-11-30 02:11:13,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:11:13" (1/1) ... [2020-11-30 02:11:13,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:11:13" (1/1) ... [2020-11-30 02:11:13,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:11:13,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:11:13,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:11:13,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:11:13,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:11:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:11:14,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:11:14,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:11:14,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 02:11:14,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:11:14,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:11:14,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 02:11:14,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 02:11:14,899 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:11:14,899 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-30 02:11:14,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:11:14 BoogieIcfgContainer [2020-11-30 02:11:14,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:11:14,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:11:14,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:11:14,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:11:14,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:11:13" (1/3) ... [2020-11-30 02:11:14,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34152a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:11:14, skipping insertion in model container [2020-11-30 02:11:14,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:11:13" (2/3) ... [2020-11-30 02:11:14,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34152a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:11:14, skipping insertion in model container [2020-11-30 02:11:14,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:11:14" (3/3) ... [2020-11-30 02:11:14,912 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2020-11-30 02:11:14,923 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:11:14,927 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:11:14,940 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:11:14,965 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:11:14,965 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:11:14,965 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:11:14,965 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:11:14,965 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:11:14,965 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:11:14,966 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:11:14,966 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:11:14,979 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-30 02:11:14,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 02:11:14,984 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:11:14,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:11:14,986 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:11:14,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:11:14,992 INFO L82 PathProgramCache]: Analyzing trace with hash 566614433, now seen corresponding path program 1 times [2020-11-30 02:11:15,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:11:15,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885648851] [2020-11-30 02:11:15,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:11:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:11:15,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:11:15,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885648851] [2020-11-30 02:11:15,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:11:15,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:11:15,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037135535] [2020-11-30 02:11:15,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 02:11:15,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:11:15,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 02:11:15,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:11:15,151 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-11-30 02:11:15,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:11:15,167 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2020-11-30 02:11:15,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:11:15,168 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-30 02:11:15,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:11:15,176 INFO L225 Difference]: With dead ends: 35 [2020-11-30 02:11:15,176 INFO L226 Difference]: Without dead ends: 16 [2020-11-30 02:11:15,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:11:15,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-30 02:11:15,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-30 02:11:15,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 02:11:15,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-11-30 02:11:15,210 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 8 [2020-11-30 02:11:15,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:11:15,210 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-11-30 02:11:15,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 02:11:15,211 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-11-30 02:11:15,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 02:11:15,211 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:11:15,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:11:15,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:11:15,213 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:11:15,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:11:15,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1508901492, now seen corresponding path program 1 times [2020-11-30 02:11:15,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:11:15,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597578320] [2020-11-30 02:11:15,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:11:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:11:15,324 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:11:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:11:15,385 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:11:15,408 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 02:11:15,408 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 02:11:15,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:11:15,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:11:15 BoogieIcfgContainer [2020-11-30 02:11:15,436 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:11:15,436 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:11:15,437 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:11:15,437 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:11:15,437 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:11:14" (3/4) ... [2020-11-30 02:11:15,441 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 02:11:15,441 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:11:15,443 INFO L168 Benchmark]: Toolchain (without parser) took 1834.84 ms. Allocated memory was 98.6 MB in the beginning and 136.3 MB in the end (delta: 37.7 MB). Free memory was 70.7 MB in the beginning and 84.1 MB in the end (delta: -13.4 MB). Peak memory consumption was 24.0 MB. Max. memory is 16.1 GB. [2020-11-30 02:11:15,444 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 98.6 MB. Free memory was 55.4 MB in the beginning and 55.4 MB in the end (delta: 41.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:11:15,445 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.78 ms. Allocated memory is still 98.6 MB. Free memory was 70.5 MB in the beginning and 75.6 MB in the end (delta: -5.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:11:15,446 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.73 ms. Allocated memory is still 98.6 MB. Free memory was 75.6 MB in the beginning and 73.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:11:15,447 INFO L168 Benchmark]: Boogie Preprocessor took 26.98 ms. Allocated memory is still 98.6 MB. Free memory was 73.8 MB in the beginning and 72.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:11:15,448 INFO L168 Benchmark]: RCFGBuilder took 914.95 ms. Allocated memory was 98.6 MB in the beginning and 136.3 MB in the end (delta: 37.7 MB). Free memory was 72.6 MB in the beginning and 107.3 MB in the end (delta: -34.7 MB). Peak memory consumption was 33.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:11:15,449 INFO L168 Benchmark]: TraceAbstraction took 532.78 ms. Allocated memory is still 136.3 MB. Free memory was 107.3 MB in the beginning and 84.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:11:15,450 INFO L168 Benchmark]: Witness Printer took 4.71 ms. Allocated memory is still 136.3 MB. Free memory was 84.3 MB in the beginning and 84.1 MB in the end (delta: 106.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:11:15,463 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 98.6 MB. Free memory was 55.4 MB in the beginning and 55.4 MB in the end (delta: 41.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 297.78 ms. Allocated memory is still 98.6 MB. Free memory was 70.5 MB in the beginning and 75.6 MB in the end (delta: -5.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.73 ms. Allocated memory is still 98.6 MB. Free memory was 75.6 MB in the beginning and 73.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.98 ms. Allocated memory is still 98.6 MB. Free memory was 73.8 MB in the beginning and 72.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 914.95 ms. Allocated memory was 98.6 MB in the beginning and 136.3 MB in the end (delta: 37.7 MB). Free memory was 72.6 MB in the beginning and 107.3 MB in the end (delta: -34.7 MB). Peak memory consumption was 33.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 532.78 ms. Allocated memory is still 136.3 MB. Free memory was 107.3 MB in the beginning and 84.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 4.71 ms. Allocated memory is still 136.3 MB. Free memory was 84.3 MB in the beginning and 84.1 MB in the end (delta: 106.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 80, overapproximation of someUnaryFLOAToperation at line 74. Possible FailurePath: [L74] float x = -0.0f; [L75] float y = 0.0f; [L22] __uint32_t w; [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (w) = gf_u.word [L30] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L32-L33] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L35-L36] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L38] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L41] return 0; [L45] COND TRUE __fpclassify_float(x) == 0 [L46] return y; [L77] float res = fmax_float(x, y); [L80] EXPR res == 0.0f && __signbit_float(res) == 0 [L80] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L3] __assert_fail("0", "float_req_bl_1252a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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-a4ecdab [2020-11-30 02:11:17,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:11:17,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:11:17,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:11:17,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:11:17,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:11:17,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:11:17,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:11:17,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:11:17,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:11:17,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:11:18,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:11:18,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:11:18,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:11:18,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:11:18,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:11:18,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:11:18,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:11:18,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:11:18,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:11:18,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:11:18,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:11:18,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:11:18,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:11:18,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:11:18,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:11:18,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:11:18,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:11:18,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:11:18,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:11:18,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:11:18,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:11:18,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:11:18,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:11:18,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:11:18,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:11:18,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:11:18,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:11:18,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:11:18,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:11:18,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:11:18,070 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-30 02:11:18,128 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:11:18,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:11:18,130 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:11:18,131 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:11:18,131 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:11:18,131 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:11:18,131 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:11:18,132 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:11:18,132 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:11:18,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:11:18,135 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:11:18,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:11:18,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:11:18,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:11:18,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:11:18,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:11:18,137 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:11:18,137 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 02:11:18,137 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 02:11:18,137 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:11:18,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:11:18,138 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:11:18,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:11:18,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:11:18,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 02:11:18,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:11:18,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:11:18,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:11:18,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:11:18,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:11:18,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:11:18,140 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 02:11:18,140 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 02:11:18,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:11:18,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:11:18,141 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:11:18,141 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_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f8d72d06ca136037e1a4f2d3dda81b71758b03c [2020-11-30 02:11:18,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:11:18,651 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:11:18,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:11:18,656 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:11:18,656 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:11:18,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2020-11-30 02:11:18,725 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan/data/000142f94/db1f62cf326c43b590c8c4fe38dbd90a/FLAG2398b3801 [2020-11-30 02:11:19,233 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:11:19,234 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2020-11-30 02:11:19,241 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan/data/000142f94/db1f62cf326c43b590c8c4fe38dbd90a/FLAG2398b3801 [2020-11-30 02:11:19,546 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan/data/000142f94/db1f62cf326c43b590c8c4fe38dbd90a [2020-11-30 02:11:19,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:11:19,551 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:11:19,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:11:19,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:11:19,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:11:19,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:11:19" (1/1) ... [2020-11-30 02:11:19,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ae549a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:11:19, skipping insertion in model container [2020-11-30 02:11:19,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:11:19" (1/1) ... [2020-11-30 02:11:19,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:11:19,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:11:19,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:11:19,763 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:11:19,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:11:19,813 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:11:19,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:11:19 WrapperNode [2020-11-30 02:11:19,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:11:19,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:11:19,816 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:11:19,816 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:11:19,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:11:19" (1/1) ... [2020-11-30 02:11:19,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:11:19" (1/1) ... [2020-11-30 02:11:19,916 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:11:19,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:11:19,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:11:19,917 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:11:19,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:11:19" (1/1) ... [2020-11-30 02:11:19,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:11:19" (1/1) ... [2020-11-30 02:11:19,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:11:19" (1/1) ... [2020-11-30 02:11:19,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:11:19" (1/1) ... [2020-11-30 02:11:19,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:11:19" (1/1) ... [2020-11-30 02:11:19,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:11:19" (1/1) ... [2020-11-30 02:11:19,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:11:19" (1/1) ... [2020-11-30 02:11:19,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:11:19,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:11:19,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:11:19,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:11:19,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:11:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:11:20,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 02:11:20,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:11:20,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 02:11:20,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:11:20,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:11:20,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-30 02:11:20,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 02:11:20,703 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:11:20,704 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-30 02:11:20,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:11:20 BoogieIcfgContainer [2020-11-30 02:11:20,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:11:20,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:11:20,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:11:20,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:11:20,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:11:19" (1/3) ... [2020-11-30 02:11:20,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c28a550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:11:20, skipping insertion in model container [2020-11-30 02:11:20,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:11:19" (2/3) ... [2020-11-30 02:11:20,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c28a550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:11:20, skipping insertion in model container [2020-11-30 02:11:20,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:11:20" (3/3) ... [2020-11-30 02:11:20,722 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2020-11-30 02:11:20,732 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:11:20,736 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:11:20,748 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:11:20,781 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:11:20,782 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:11:20,783 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:11:20,783 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:11:20,783 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:11:20,783 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:11:20,783 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:11:20,784 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:11:20,798 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-30 02:11:20,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 02:11:20,807 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:11:20,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:11:20,808 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:11:20,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:11:20,816 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-11-30 02:11:20,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:11:20,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215719945] [2020-11-30 02:11:20,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/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 [2020-11-30 02:11:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:11:20,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 02:11:20,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:11:20,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:11:20,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:11:20,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:11:20,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [215719945] [2020-11-30 02:11:20,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:11:20,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 02:11:20,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430683487] [2020-11-30 02:11:20,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 02:11:20,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:11:20,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 02:11:20,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:11:20,998 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-30 02:11:21,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:11:21,017 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-11-30 02:11:21,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:11:21,018 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 02:11:21,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:11:21,037 INFO L225 Difference]: With dead ends: 63 [2020-11-30 02:11:21,039 INFO L226 Difference]: Without dead ends: 29 [2020-11-30 02:11:21,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:11:21,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-30 02:11:21,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-30 02:11:21,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-30 02:11:21,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-11-30 02:11:21,086 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-11-30 02:11:21,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:11:21,087 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-11-30 02:11:21,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 02:11:21,087 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-11-30 02:11:21,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 02:11:21,089 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:11:21,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:11:21,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 02:11:21,310 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:11:21,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:11:21,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-11-30 02:11:21,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:11:21,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1989982035] [2020-11-30 02:11:21,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/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 [2020-11-30 02:11:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:11:21,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 02:11:21,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:11:21,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:11:21,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:11:21,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:11:21,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1989982035] [2020-11-30 02:11:21,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:11:21,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 02:11:21,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785617109] [2020-11-30 02:11:21,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:11:21,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:11:21,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:11:21,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:11:21,467 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2020-11-30 02:11:21,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:11:21,622 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-11-30 02:11:21,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:11:21,622 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-30 02:11:21,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:11:21,624 INFO L225 Difference]: With dead ends: 68 [2020-11-30 02:11:21,624 INFO L226 Difference]: Without dead ends: 59 [2020-11-30 02:11:21,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:11:21,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-30 02:11:21,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2020-11-30 02:11:21,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 02:11:21,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-30 02:11:21,634 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-11-30 02:11:21,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:11:21,635 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-30 02:11:21,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:11:21,635 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-30 02:11:21,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 02:11:21,636 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:11:21,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:11:21,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 02:11:21,853 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:11:21,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:11:21,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-11-30 02:11:21,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:11:21,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085185611] [2020-11-30 02:11:21,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-30 02:11:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:11:21,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 02:11:21,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:11:21,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:11:21,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:11:22,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:11:22,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085185611] [2020-11-30 02:11:22,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:11:22,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-30 02:11:22,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857371808] [2020-11-30 02:11:22,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:11:22,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:11:22,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:11:22,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:11:22,078 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-11-30 02:11:22,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:11:22,175 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2020-11-30 02:11:22,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:11:22,185 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-30 02:11:22,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:11:22,186 INFO L225 Difference]: With dead ends: 52 [2020-11-30 02:11:22,186 INFO L226 Difference]: Without dead ends: 26 [2020-11-30 02:11:22,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:11:22,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-30 02:11:22,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-30 02:11:22,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-30 02:11:22,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2020-11-30 02:11:22,191 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2020-11-30 02:11:22,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:11:22,192 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-11-30 02:11:22,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:11:22,192 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2020-11-30 02:11:22,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 02:11:22,193 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:11:22,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:11:22,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 02:11:22,406 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:11:22,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:11:22,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2020-11-30 02:11:22,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:11:22,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658306386] [2020-11-30 02:11:22,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-30 02:11:22,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:11:22,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 02:11:22,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:11:22,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:11:22,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:11:22,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:11:22,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658306386] [2020-11-30 02:11:22,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:11:22,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 02:11:22,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366918609] [2020-11-30 02:11:22,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:11:22,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:11:22,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:11:22,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:11:22,515 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 6 states. [2020-11-30 02:11:22,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:11:22,634 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-11-30 02:11:22,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:11:22,635 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-30 02:11:22,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:11:22,636 INFO L225 Difference]: With dead ends: 61 [2020-11-30 02:11:22,636 INFO L226 Difference]: Without dead ends: 52 [2020-11-30 02:11:22,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:11:22,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-30 02:11:22,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2020-11-30 02:11:22,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-30 02:11:22,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-11-30 02:11:22,643 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2020-11-30 02:11:22,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:11:22,644 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-11-30 02:11:22,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:11:22,644 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-11-30 02:11:22,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 02:11:22,645 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:11:22,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:11:22,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 02:11:22,849 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:11:22,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:11:22,850 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2020-11-30 02:11:22,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:11:22,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1669686843] [2020-11-30 02:11:22,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-30 02:11:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:11:22,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 02:11:22,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:11:22,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:11:22,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:11:23,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:11:23,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1669686843] [2020-11-30 02:11:23,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:11:23,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 02:11:23,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832257916] [2020-11-30 02:11:23,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:11:23,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:11:23,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:11:23,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:11:23,018 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2020-11-30 02:11:23,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:11:23,034 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2020-11-30 02:11:23,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:11:23,035 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-30 02:11:23,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:11:23,036 INFO L225 Difference]: With dead ends: 38 [2020-11-30 02:11:23,036 INFO L226 Difference]: Without dead ends: 28 [2020-11-30 02:11:23,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:11:23,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-30 02:11:23,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-30 02:11:23,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-30 02:11:23,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-11-30 02:11:23,043 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2020-11-30 02:11:23,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:11:23,043 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-11-30 02:11:23,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:11:23,044 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-11-30 02:11:23,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 02:11:23,044 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:11:23,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:11:23,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-30 02:11:23,245 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:11:23,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:11:23,246 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2020-11-30 02:11:23,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:11:23,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734808209] [2020-11-30 02:11:23,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-30 02:11:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:11:23,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 02:11:23,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:11:23,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:11:23,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:11:23,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:11:23,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734808209] [2020-11-30 02:11:23,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:11:23,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-11-30 02:11:23,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113486195] [2020-11-30 02:11:23,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 02:11:23,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:11:23,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 02:11:23,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:11:23,463 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states. [2020-11-30 02:11:23,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:11:23,605 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-11-30 02:11:23,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 02:11:23,605 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-11-30 02:11:23,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:11:23,606 INFO L225 Difference]: With dead ends: 40 [2020-11-30 02:11:23,606 INFO L226 Difference]: Without dead ends: 37 [2020-11-30 02:11:23,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-11-30 02:11:23,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-30 02:11:23,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2020-11-30 02:11:23,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-30 02:11:23,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-11-30 02:11:23,623 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2020-11-30 02:11:23,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:11:23,624 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-11-30 02:11:23,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 02:11:23,624 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-11-30 02:11:23,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 02:11:23,625 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:11:23,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:11:23,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-30 02:11:23,847 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:11:23,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:11:23,848 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2020-11-30 02:11:23,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:11:23,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1989314140] [2020-11-30 02:11:23,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-30 02:11:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:11:23,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 02:11:23,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:11:23,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:11:23,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:11:24,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:11:24,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1989314140] [2020-11-30 02:11:24,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:11:24,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-30 02:11:24,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145398613] [2020-11-30 02:11:24,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:11:24,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:11:24,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:11:24,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:11:24,010 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2020-11-30 02:11:24,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:11:24,056 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2020-11-30 02:11:24,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:11:24,062 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-11-30 02:11:24,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:11:24,062 INFO L225 Difference]: With dead ends: 43 [2020-11-30 02:11:24,063 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 02:11:24,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:11:24,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 02:11:24,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-30 02:11:24,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 02:11:24,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2020-11-30 02:11:24,067 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2020-11-30 02:11:24,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:11:24,067 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2020-11-30 02:11:24,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:11:24,068 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2020-11-30 02:11:24,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 02:11:24,068 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:11:24,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:11:24,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-30 02:11:24,269 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:11:24,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:11:24,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2020-11-30 02:11:24,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:11:24,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990762211] [2020-11-30 02:11:24,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-30 02:11:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:11:24,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 02:11:24,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:11:24,478 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:11:24,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:11:24,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:11:24,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:11:24,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990762211] [2020-11-30 02:11:24,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:11:24,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2020-11-30 02:11:24,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641087401] [2020-11-30 02:11:24,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-30 02:11:24,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:11:24,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-30 02:11:24,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-11-30 02:11:24,825 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 16 states. [2020-11-30 02:11:25,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:11:25,150 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2020-11-30 02:11:25,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 02:11:25,150 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2020-11-30 02:11:25,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:11:25,151 INFO L225 Difference]: With dead ends: 23 [2020-11-30 02:11:25,151 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:11:25,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2020-11-30 02:11:25,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:11:25,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:11:25,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:11:25,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:11:25,152 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-11-30 02:11:25,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:11:25,152 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:11:25,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-30 02:11:25,152 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:11:25,152 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:11:25,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-30 02:11:25,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:11:25,655 INFO L277 CegarLoopResult]: At program point L85(lines 67 86) the Hoare annotation is: true [2020-11-30 02:11:25,656 INFO L274 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-11-30 02:11:25,656 INFO L274 CegarLoopResult]: For program point L52-2(line 52) no Hoare annotation was computed. [2020-11-30 02:11:25,656 INFO L270 CegarLoopResult]: At program point L52-3(lines 44 53) the Hoare annotation is: (and (= (_ +zero 8 24) |ULTIMATE.start_fmax_float_#res|) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24))) [2020-11-30 02:11:25,656 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-30 02:11:25,656 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-30 02:11:25,656 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:11:25,656 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 02:11:25,656 INFO L274 CegarLoopResult]: For program point L45(lines 45 47) no Hoare annotation was computed. [2020-11-30 02:11:25,657 INFO L274 CegarLoopResult]: For program point L38(lines 38 41) no Hoare annotation was computed. [2020-11-30 02:11:25,657 INFO L274 CegarLoopResult]: For program point L38-1(lines 38 41) no Hoare annotation was computed. [2020-11-30 02:11:25,657 INFO L274 CegarLoopResult]: For program point L80(line 80) no Hoare annotation was computed. [2020-11-30 02:11:25,657 INFO L274 CegarLoopResult]: For program point L80-2(lines 80 83) no Hoare annotation was computed. [2020-11-30 02:11:25,657 INFO L270 CegarLoopResult]: At program point L64(lines 55 65) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short16| (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= (_ +zero 8 24) |ULTIMATE.start_fmax_float_#res|) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1))) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) (_ +zero 8 24)) (= |ULTIMATE.start___signbit_float_#res| (_ bv0 32)) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24))) [2020-11-30 02:11:25,657 INFO L274 CegarLoopResult]: For program point L32(lines 32 41) no Hoare annotation was computed. [2020-11-30 02:11:25,661 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 02:11:25,661 INFO L274 CegarLoopResult]: For program point L32-1(lines 32 41) no Hoare annotation was computed. [2020-11-30 02:11:25,661 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 02:11:25,662 INFO L274 CegarLoopResult]: For program point L24-1(lines 24 28) no Hoare annotation was computed. [2020-11-30 02:11:25,662 INFO L270 CegarLoopResult]: At program point L24-2(lines 24 28) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start___fpclassify_float_~x .cse0) (= ULTIMATE.start_fmax_float_~x .cse0) (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)))) [2020-11-30 02:11:25,662 INFO L274 CegarLoopResult]: For program point L24-3(lines 21 42) no Hoare annotation was computed. [2020-11-30 02:11:25,662 INFO L274 CegarLoopResult]: For program point L24-5(lines 24 28) no Hoare annotation was computed. [2020-11-30 02:11:25,662 INFO L270 CegarLoopResult]: At program point L24-6(lines 24 28) the Hoare annotation is: (and (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24))) [2020-11-30 02:11:25,662 INFO L274 CegarLoopResult]: For program point L24-7(lines 21 42) no Hoare annotation was computed. [2020-11-30 02:11:25,662 INFO L274 CegarLoopResult]: For program point L49(lines 49 51) no Hoare annotation was computed. [2020-11-30 02:11:25,663 INFO L270 CegarLoopResult]: At program point L41(lines 21 42) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) .cse0) (= ULTIMATE.start___fpclassify_float_~x .cse0) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|) (= ULTIMATE.start_fmax_float_~x .cse0) (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)))) [2020-11-30 02:11:25,663 INFO L270 CegarLoopResult]: At program point L41-1(lines 21 42) the Hoare annotation is: (and (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24))) [2020-11-30 02:11:25,663 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:11:25,663 INFO L274 CegarLoopResult]: For program point L58-1(lines 58 62) no Hoare annotation was computed. [2020-11-30 02:11:25,663 INFO L270 CegarLoopResult]: At program point L58-2(lines 58 62) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short16| (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= (_ +zero 8 24) |ULTIMATE.start_fmax_float_#res|) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24))) [2020-11-30 02:11:25,663 INFO L274 CegarLoopResult]: For program point L58-3(lines 58 62) no Hoare annotation was computed. [2020-11-30 02:11:25,663 INFO L274 CegarLoopResult]: For program point L35(lines 35 41) no Hoare annotation was computed. [2020-11-30 02:11:25,663 INFO L274 CegarLoopResult]: For program point L35-1(lines 35 41) no Hoare annotation was computed. [2020-11-30 02:11:25,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:11:25 BoogieIcfgContainer [2020-11-30 02:11:25,703 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:11:25,704 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:11:25,704 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:11:25,705 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:11:25,705 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:11:20" (3/4) ... [2020-11-30 02:11:25,708 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:11:25,723 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-11-30 02:11:25,724 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-30 02:11:25,724 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 02:11:25,725 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:11:25,753 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && 2bv32 == \result) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~Pluszero~LONGDOUBLE() [2020-11-30 02:11:25,754 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~Pluszero~LONGDOUBLE() == \result && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~Pluszero~LONGDOUBLE() [2020-11-30 02:11:25,755 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((aux-res == 0.0f && __signbit_float(res) == 0-aux && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~Pluszero~LONGDOUBLE() [2020-11-30 02:11:25,756 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(0bv32 == \result) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~Pluszero~LONGDOUBLE() [2020-11-30 02:11:25,757 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((aux-res == 0.0f && __signbit_float(res) == 0-aux && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~Pluszero~LONGDOUBLE() == x) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && \result == 0bv32) && ~Pluszero~LONGDOUBLE() == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~Pluszero~LONGDOUBLE() [2020-11-30 02:11:25,811 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ae5a00cc-e7a1-4ed1-b4d8-ac01f5655c44/bin/utaipan/witness.graphml [2020-11-30 02:11:25,811 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:11:25,814 INFO L168 Benchmark]: Toolchain (without parser) took 6261.89 ms. Allocated memory was 62.9 MB in the beginning and 98.6 MB in the end (delta: 35.7 MB). Free memory was 42.9 MB in the beginning and 50.2 MB in the end (delta: -7.3 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:11:25,814 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 62.9 MB. Free memory was 43.9 MB in the beginning and 43.9 MB in the end (delta: 29.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:11:25,815 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.48 ms. Allocated memory is still 62.9 MB. Free memory was 42.8 MB in the beginning and 32.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:11:25,816 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.81 ms. Allocated memory is still 62.9 MB. Free memory was 31.9 MB in the beginning and 45.2 MB in the end (delta: -13.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:11:25,816 INFO L168 Benchmark]: Boogie Preprocessor took 33.02 ms. Allocated memory is still 62.9 MB. Free memory was 45.2 MB in the beginning and 43.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:11:25,817 INFO L168 Benchmark]: RCFGBuilder took 755.92 ms. Allocated memory is still 62.9 MB. Free memory was 43.6 MB in the beginning and 41.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. [2020-11-30 02:11:25,817 INFO L168 Benchmark]: TraceAbstraction took 4994.18 ms. Allocated memory was 62.9 MB in the beginning and 98.6 MB in the end (delta: 35.7 MB). Free memory was 40.8 MB in the beginning and 53.4 MB in the end (delta: -12.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:11:25,818 INFO L168 Benchmark]: Witness Printer took 107.37 ms. Allocated memory is still 98.6 MB. Free memory was 53.4 MB in the beginning and 50.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:11:25,820 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 62.9 MB. Free memory was 43.9 MB in the beginning and 43.9 MB in the end (delta: 29.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 262.48 ms. Allocated memory is still 62.9 MB. Free memory was 42.8 MB in the beginning and 32.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 100.81 ms. Allocated memory is still 62.9 MB. Free memory was 31.9 MB in the beginning and 45.2 MB in the end (delta: -13.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.02 ms. Allocated memory is still 62.9 MB. Free memory was 45.2 MB in the beginning and 43.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 755.92 ms. Allocated memory is still 62.9 MB. Free memory was 43.6 MB in the beginning and 41.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4994.18 ms. Allocated memory was 62.9 MB in the beginning and 98.6 MB in the end (delta: 35.7 MB). Free memory was 40.8 MB in the beginning and 53.4 MB in the end (delta: -12.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. * Witness Printer took 107.37 ms. Allocated memory is still 98.6 MB. Free memory was 53.4 MB in the beginning and 50.2 MB in the end (delta: 3.2 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: 67]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: ((((((((aux-res == 0.0f && __signbit_float(res) == 0-aux && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~Pluszero~LONGDOUBLE() == x) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && \result == 0bv32) && ~Pluszero~LONGDOUBLE() == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: (((~Pluszero~LONGDOUBLE() == \result && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (~Pluszero~LONGDOUBLE() == x && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (((!(0bv32 == \result) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: ((((((aux-res == 0.0f && __signbit_float(res) == 0-aux && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (((~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && 2bv32 == \result) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~Pluszero~LONGDOUBLE() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 204 SDslu, 399 SDs, 0 SdLazy, 150 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 257 GetRequests, 197 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 8 MinimizatonAttempts, 59 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 16 NumberOfFragments, 168 HoareAnnotationTreeSize, 8 FomulaSimplifications, 44 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 240 ConstructedInterpolants, 15 QuantifiedInterpolants, 14682 SizeOfPredicates, 38 NumberOfNonLiveVariables, 519 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 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...