./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1051.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1051.c -s /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/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 b42939eee3e11712ad53342d1b2656dec849a2d0 ............................................................................................................................................................................................................................................................................................................ 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_17d6f1e8-e8a0-4391-b140-40f5b34870c8/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1051.c -s /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/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 b42939eee3e11712ad53342d1b2656dec849a2d0 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 20:42:33,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 20:42:33,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 20:42:33,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 20:42:33,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 20:42:33,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 20:42:33,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 20:42:33,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 20:42:33,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 20:42:33,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 20:42:33,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 20:42:33,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 20:42:33,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 20:42:33,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 20:42:33,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 20:42:33,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 20:42:33,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 20:42:33,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 20:42:33,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 20:42:33,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 20:42:33,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 20:42:33,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 20:42:33,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 20:42:33,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 20:42:33,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 20:42:33,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 20:42:33,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 20:42:33,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 20:42:33,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 20:42:33,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 20:42:33,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 20:42:33,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 20:42:33,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 20:42:33,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 20:42:33,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 20:42:33,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 20:42:33,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 20:42:33,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 20:42:33,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 20:42:33,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 20:42:33,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 20:42:33,207 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 20:42:33,225 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 20:42:33,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 20:42:33,226 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 20:42:33,226 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 20:42:33,226 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 20:42:33,226 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 20:42:33,226 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 20:42:33,226 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 20:42:33,226 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 20:42:33,226 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 20:42:33,226 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 20:42:33,227 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 20:42:33,227 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 20:42:33,227 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 20:42:33,227 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 20:42:33,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 20:42:33,228 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 20:42:33,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 20:42:33,228 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 20:42:33,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 20:42:33,228 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 20:42:33,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 20:42:33,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 20:42:33,228 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 20:42:33,228 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 20:42:33,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 20:42:33,229 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 20:42:33,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 20:42:33,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 20:42:33,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 20:42:33,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 20:42:33,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 20:42:33,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 20:42:33,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 20:42:33,229 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 20:42:33,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 20:42:33,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 20:42:33,230 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 20:42:33,230 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 20:42:33,230 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_17d6f1e8-e8a0-4391-b140-40f5b34870c8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b42939eee3e11712ad53342d1b2656dec849a2d0 [2020-12-09 20:42:33,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 20:42:33,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 20:42:33,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 20:42:33,414 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 20:42:33,415 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 20:42:33,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1051.c [2020-12-09 20:42:33,464 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/bin/utaipan/data/a7e7a5692/bf74eaf6953f4367bc20bce41b3766c4/FLAG735664bf9 [2020-12-09 20:42:33,825 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 20:42:33,826 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/sv-benchmarks/c/float-newlib/double_req_bl_1051.c [2020-12-09 20:42:33,831 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/bin/utaipan/data/a7e7a5692/bf74eaf6953f4367bc20bce41b3766c4/FLAG735664bf9 [2020-12-09 20:42:33,841 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/bin/utaipan/data/a7e7a5692/bf74eaf6953f4367bc20bce41b3766c4 [2020-12-09 20:42:33,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 20:42:33,844 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 20:42:33,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 20:42:33,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 20:42:33,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 20:42:33,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:42:33" (1/1) ... [2020-12-09 20:42:33,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35162acf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:42:33, skipping insertion in model container [2020-12-09 20:42:33,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:42:33" (1/1) ... [2020-12-09 20:42:33,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 20:42:33,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 20:42:34,009 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/sv-benchmarks/c/float-newlib/double_req_bl_1051.c[2106,2119] [2020-12-09 20:42:34,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 20:42:34,020 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 20:42:34,047 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/sv-benchmarks/c/float-newlib/double_req_bl_1051.c[2106,2119] [2020-12-09 20:42:34,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 20:42:34,063 INFO L208 MainTranslator]: Completed translation [2020-12-09 20:42:34,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:42:34 WrapperNode [2020-12-09 20:42:34,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 20:42:34,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 20:42:34,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 20:42:34,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 20:42:34,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:42:34" (1/1) ... [2020-12-09 20:42:34,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:42:34" (1/1) ... [2020-12-09 20:42:34,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 20:42:34,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 20:42:34,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 20:42:34,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 20:42:34,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:42:34" (1/1) ... [2020-12-09 20:42:34,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:42:34" (1/1) ... [2020-12-09 20:42:34,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:42:34" (1/1) ... [2020-12-09 20:42:34,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:42:34" (1/1) ... [2020-12-09 20:42:34,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:42:34" (1/1) ... [2020-12-09 20:42:34,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:42:34" (1/1) ... [2020-12-09 20:42:34,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:42:34" (1/1) ... [2020-12-09 20:42:34,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 20:42:34,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 20:42:34,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 20:42:34,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 20:42:34,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:42:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 20:42:34,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 20:42:34,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 20:42:34,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-09 20:42:34,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 20:42:34,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-09 20:42:34,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 20:42:34,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 20:42:34,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 20:42:34,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 20:42:34,573 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 20:42:34,573 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-09 20:42:34,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:42:34 BoogieIcfgContainer [2020-12-09 20:42:34,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 20:42:34,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 20:42:34,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 20:42:34,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 20:42:34,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:42:33" (1/3) ... [2020-12-09 20:42:34,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd93726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:42:34, skipping insertion in model container [2020-12-09 20:42:34,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:42:34" (2/3) ... [2020-12-09 20:42:34,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd93726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:42:34, skipping insertion in model container [2020-12-09 20:42:34,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:42:34" (3/3) ... [2020-12-09 20:42:34,583 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2020-12-09 20:42:34,593 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 20:42:34,596 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 20:42:34,604 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 20:42:34,620 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 20:42:34,620 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 20:42:34,620 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 20:42:34,620 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 20:42:34,621 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 20:42:34,621 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 20:42:34,621 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 20:42:34,621 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 20:42:34,635 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-12-09 20:42:34,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 20:42:34,639 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:42:34,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:42:34,640 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:42:34,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:42:34,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1371057062, now seen corresponding path program 1 times [2020-12-09 20:42:34,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:42:34,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228595038] [2020-12-09 20:42:34,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:42:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:42:34,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:42:34,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228595038] [2020-12-09 20:42:34,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:42:34,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 20:42:34,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812633475] [2020-12-09 20:42:34,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 20:42:34,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:42:34,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 20:42:34,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 20:42:34,757 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-12-09 20:42:34,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:42:34,768 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2020-12-09 20:42:34,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 20:42:34,769 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-09 20:42:34,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:42:34,775 INFO L225 Difference]: With dead ends: 35 [2020-12-09 20:42:34,775 INFO L226 Difference]: Without dead ends: 16 [2020-12-09 20:42:34,777 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 [2020-12-09 20:42:34,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-09 20:42:34,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-09 20:42:34,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-09 20:42:34,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2020-12-09 20:42:34,799 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 8 [2020-12-09 20:42:34,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:42:34,799 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2020-12-09 20:42:34,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 20:42:34,799 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2020-12-09 20:42:34,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 20:42:34,800 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:42:34,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:42:34,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 20:42:34,800 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:42:34,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:42:34,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1275913669, now seen corresponding path program 1 times [2020-12-09 20:42:34,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:42:34,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966495341] [2020-12-09 20:42:34,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:42:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 20:42:34,835 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 20:42:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 20:42:34,855 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 20:42:34,871 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 20:42:34,872 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 20:42:34,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 20:42:34,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:42:34 BoogieIcfgContainer [2020-12-09 20:42:34,891 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 20:42:34,892 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 20:42:34,892 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 20:42:34,892 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 20:42:34,893 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:42:34" (3/4) ... [2020-12-09 20:42:34,895 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 20:42:34,895 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 20:42:34,896 INFO L168 Benchmark]: Toolchain (without parser) took 1051.72 ms. Allocated memory was 75.5 MB in the beginning and 98.6 MB in the end (delta: 23.1 MB). Free memory was 43.9 MB in the beginning and 57.9 MB in the end (delta: -14.0 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2020-12-09 20:42:34,897 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 75.5 MB. Free memory is still 34.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 20:42:34,897 INFO L168 Benchmark]: CACSL2BoogieTranslator took 218.37 ms. Allocated memory was 75.5 MB in the beginning and 98.6 MB in the end (delta: 23.1 MB). Free memory was 43.7 MB in the beginning and 75.2 MB in the end (delta: -31.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 20:42:34,898 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.62 ms. Allocated memory is still 98.6 MB. Free memory was 75.2 MB in the beginning and 73.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 20:42:34,899 INFO L168 Benchmark]: Boogie Preprocessor took 27.90 ms. Allocated memory is still 98.6 MB. Free memory was 73.6 MB in the beginning and 72.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 20:42:34,899 INFO L168 Benchmark]: RCFGBuilder took 454.23 ms. Allocated memory is still 98.6 MB. Free memory was 72.0 MB in the beginning and 33.3 MB in the end (delta: 38.7 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. [2020-12-09 20:42:34,899 INFO L168 Benchmark]: TraceAbstraction took 314.48 ms. Allocated memory is still 98.6 MB. Free memory was 32.8 MB in the beginning and 57.9 MB in the end (delta: -25.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 20:42:34,900 INFO L168 Benchmark]: Witness Printer took 2.99 ms. Allocated memory is still 98.6 MB. Free memory is still 57.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 20:42:34,902 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 75.5 MB. Free memory is still 34.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 218.37 ms. Allocated memory was 75.5 MB in the beginning and 98.6 MB in the end (delta: 23.1 MB). Free memory was 43.7 MB in the beginning and 75.2 MB in the end (delta: -31.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.62 ms. Allocated memory is still 98.6 MB. Free memory was 75.2 MB in the beginning and 73.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.90 ms. Allocated memory is still 98.6 MB. Free memory was 73.6 MB in the beginning and 72.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 454.23 ms. Allocated memory is still 98.6 MB. Free memory was 72.0 MB in the beginning and 33.3 MB in the end (delta: 38.7 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 314.48 ms. Allocated memory is still 98.6 MB. Free memory was 32.8 MB in the beginning and 57.9 MB in the end (delta: -25.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 2.99 ms. Allocated memory is still 98.6 MB. Free memory is still 57.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 95]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 82, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of bitwiseAnd at line 27. Possible FailurePath: [L16] static const double huge_floor = 1.0e300; [L90] double x = 0.0 / 0.0; [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] COND FALSE !(j0 < 20) VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L49] COND TRUE j0 > 51 [L50] COND TRUE j0 == 0x400 [L51] return x + x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L91] double res = floor_double(x); [L82] return x != x; [L94] COND TRUE !isnan_double(res) [L95] reach_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 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, 0.0s 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 0.2.0-7b2dab5 [2020-12-09 20:42:36,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 20:42:36,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 20:42:36,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 20:42:36,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 20:42:36,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 20:42:36,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 20:42:36,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 20:42:36,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 20:42:36,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 20:42:36,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 20:42:36,445 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 20:42:36,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 20:42:36,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 20:42:36,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 20:42:36,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 20:42:36,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 20:42:36,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 20:42:36,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 20:42:36,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 20:42:36,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 20:42:36,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 20:42:36,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 20:42:36,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 20:42:36,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 20:42:36,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 20:42:36,466 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 20:42:36,467 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 20:42:36,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 20:42:36,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 20:42:36,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 20:42:36,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 20:42:36,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 20:42:36,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 20:42:36,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 20:42:36,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 20:42:36,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 20:42:36,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 20:42:36,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 20:42:36,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 20:42:36,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 20:42:36,476 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 20:42:36,503 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 20:42:36,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 20:42:36,504 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 20:42:36,505 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 20:42:36,505 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 20:42:36,505 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 20:42:36,505 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 20:42:36,505 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 20:42:36,505 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 20:42:36,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 20:42:36,506 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 20:42:36,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 20:42:36,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 20:42:36,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 20:42:36,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 20:42:36,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 20:42:36,507 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 20:42:36,507 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 20:42:36,507 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 20:42:36,508 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 20:42:36,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 20:42:36,508 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 20:42:36,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 20:42:36,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 20:42:36,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 20:42:36,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 20:42:36,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 20:42:36,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 20:42:36,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 20:42:36,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 20:42:36,509 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 20:42:36,509 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 20:42:36,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 20:42:36,509 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 20:42:36,510 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 20:42:36,510 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_17d6f1e8-e8a0-4391-b140-40f5b34870c8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b42939eee3e11712ad53342d1b2656dec849a2d0 [2020-12-09 20:42:36,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 20:42:36,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 20:42:36,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 20:42:36,766 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 20:42:36,766 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 20:42:36,767 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1051.c [2020-12-09 20:42:36,815 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/bin/utaipan/data/b7691606a/ec4417c7830347489690b1ad037bd88e/FLAGcf5c84331 [2020-12-09 20:42:37,184 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 20:42:37,184 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/sv-benchmarks/c/float-newlib/double_req_bl_1051.c [2020-12-09 20:42:37,190 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/bin/utaipan/data/b7691606a/ec4417c7830347489690b1ad037bd88e/FLAGcf5c84331 [2020-12-09 20:42:37,204 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/bin/utaipan/data/b7691606a/ec4417c7830347489690b1ad037bd88e [2020-12-09 20:42:37,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 20:42:37,207 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 20:42:37,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 20:42:37,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 20:42:37,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 20:42:37,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:42:37" (1/1) ... [2020-12-09 20:42:37,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ca7b419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:42:37, skipping insertion in model container [2020-12-09 20:42:37,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:42:37" (1/1) ... [2020-12-09 20:42:37,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 20:42:37,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 20:42:37,336 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/sv-benchmarks/c/float-newlib/double_req_bl_1051.c[2106,2119] [2020-12-09 20:42:37,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 20:42:37,347 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 20:42:37,367 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/sv-benchmarks/c/float-newlib/double_req_bl_1051.c[2106,2119] [2020-12-09 20:42:37,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 20:42:37,381 INFO L208 MainTranslator]: Completed translation [2020-12-09 20:42:37,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:42:37 WrapperNode [2020-12-09 20:42:37,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 20:42:37,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 20:42:37,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 20:42:37,382 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 20:42:37,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:42:37" (1/1) ... [2020-12-09 20:42:37,395 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:42:37" (1/1) ... [2020-12-09 20:42:37,427 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 20:42:37,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 20:42:37,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 20:42:37,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 20:42:37,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:42:37" (1/1) ... [2020-12-09 20:42:37,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:42:37" (1/1) ... [2020-12-09 20:42:37,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:42:37" (1/1) ... [2020-12-09 20:42:37,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:42:37" (1/1) ... [2020-12-09 20:42:37,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:42:37" (1/1) ... [2020-12-09 20:42:37,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:42:37" (1/1) ... [2020-12-09 20:42:37,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:42:37" (1/1) ... [2020-12-09 20:42:37,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 20:42:37,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 20:42:37,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 20:42:37,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 20:42:37,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:42:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 20:42:37,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-12-09 20:42:37,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-09 20:42:37,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 20:42:37,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 20:42:37,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-09 20:42:37,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 20:42:37,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 20:42:37,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-09 20:42:37,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 20:42:39,172 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 20:42:39,172 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-09 20:42:39,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:42:39 BoogieIcfgContainer [2020-12-09 20:42:39,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 20:42:39,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 20:42:39,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 20:42:39,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 20:42:39,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:42:37" (1/3) ... [2020-12-09 20:42:39,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53de387a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:42:39, skipping insertion in model container [2020-12-09 20:42:39,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:42:37" (2/3) ... [2020-12-09 20:42:39,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53de387a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:42:39, skipping insertion in model container [2020-12-09 20:42:39,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:42:39" (3/3) ... [2020-12-09 20:42:39,179 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2020-12-09 20:42:39,188 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 20:42:39,191 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 20:42:39,198 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 20:42:39,214 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 20:42:39,214 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 20:42:39,214 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 20:42:39,214 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 20:42:39,214 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 20:42:39,215 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 20:42:39,215 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 20:42:39,215 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 20:42:39,223 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-12-09 20:42:39,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 20:42:39,227 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:42:39,228 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:42:39,228 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:42:39,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:42:39,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1930047821, now seen corresponding path program 1 times [2020-12-09 20:42:39,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:42:39,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439286354] [2020-12-09 20:42:39,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 20:42:39,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:42:39,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 20:42:39,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:42:39,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:42:39,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 20:42:39,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439286354] [2020-12-09 20:42:39,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:42:39,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 20:42:39,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042880131] [2020-12-09 20:42:39,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 20:42:39,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 20:42:39,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 20:42:39,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 20:42:39,376 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2020-12-09 20:42:39,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:42:39,393 INFO L93 Difference]: Finished difference Result 66 states and 104 transitions. [2020-12-09 20:42:39,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 20:42:39,394 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-09 20:42:39,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:42:39,402 INFO L225 Difference]: With dead ends: 66 [2020-12-09 20:42:39,403 INFO L226 Difference]: Without dead ends: 31 [2020-12-09 20:42:39,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 20:42:39,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-09 20:42:39,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-12-09 20:42:39,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 20:42:39,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2020-12-09 20:42:39,434 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 11 [2020-12-09 20:42:39,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:42:39,434 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2020-12-09 20:42:39,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 20:42:39,434 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2020-12-09 20:42:39,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 20:42:39,435 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:42:39,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:42:39,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 20:42:39,635 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:42:39,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:42:39,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1310126896, now seen corresponding path program 1 times [2020-12-09 20:42:39,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:42:39,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [793144337] [2020-12-09 20:42:39,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 20:42:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:42:39,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 20:42:39,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:42:39,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:42:39,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 20:42:39,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [793144337] [2020-12-09 20:42:39,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:42:39,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 20:42:39,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229778449] [2020-12-09 20:42:39,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 20:42:39,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 20:42:39,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 20:42:39,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 20:42:39,830 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand 6 states. [2020-12-09 20:42:40,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:42:40,519 INFO L93 Difference]: Finished difference Result 42 states and 55 transitions. [2020-12-09 20:42:40,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 20:42:40,519 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-09 20:42:40,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:42:40,520 INFO L225 Difference]: With dead ends: 42 [2020-12-09 20:42:40,520 INFO L226 Difference]: Without dead ends: 21 [2020-12-09 20:42:40,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 20:42:40,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-09 20:42:40,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-12-09 20:42:40,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-09 20:42:40,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-12-09 20:42:40,523 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 12 [2020-12-09 20:42:40,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:42:40,523 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-12-09 20:42:40,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 20:42:40,523 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-12-09 20:42:40,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 20:42:40,523 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:42:40,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:42:40,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 20:42:40,726 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:42:40,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:42:40,727 INFO L82 PathProgramCache]: Analyzing trace with hash -649399050, now seen corresponding path program 1 times [2020-12-09 20:42:40,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:42:40,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353385136] [2020-12-09 20:42:40,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/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 [2020-12-09 20:42:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:42:40,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 20:42:40,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:42:40,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:42:40,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 20:42:40,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353385136] [2020-12-09 20:42:40,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:42:40,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 20:42:40,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422071474] [2020-12-09 20:42:40,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 20:42:40,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 20:42:40,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 20:42:40,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:42:40,990 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2020-12-09 20:42:41,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:42:41,156 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-12-09 20:42:41,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 20:42:41,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-09 20:42:41,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:42:41,157 INFO L225 Difference]: With dead ends: 21 [2020-12-09 20:42:41,157 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 20:42:41,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 20:42:41,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 20:42:41,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 20:42:41,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 20:42:41,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 20:42:41,158 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-09 20:42:41,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:42:41,158 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 20:42:41,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 20:42:41,158 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 20:42:41,158 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 20:42:41,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 20:42:41,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 20:42:41,482 INFO L262 CegarLoopResult]: For program point L60(lines 60 67) no Hoare annotation was computed. [2020-12-09 20:42:41,482 INFO L262 CegarLoopResult]: For program point L94(lines 94 97) no Hoare annotation was computed. [2020-12-09 20:42:41,482 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 20:42:41,482 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 20:42:41,482 INFO L262 CegarLoopResult]: For program point L28(lines 28 71) no Hoare annotation was computed. [2020-12-09 20:42:41,482 INFO L258 CegarLoopResult]: At program point L78(lines 18 79) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_floor_double_~x)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_floor_double_#res|))) [2020-12-09 20:42:41,483 INFO L262 CegarLoopResult]: For program point L95(line 95) no Hoare annotation was computed. [2020-12-09 20:42:41,483 INFO L262 CegarLoopResult]: For program point L29(lines 29 48) no Hoare annotation was computed. [2020-12-09 20:42:41,483 INFO L262 CegarLoopResult]: For program point L21-1(lines 21 26) no Hoare annotation was computed. [2020-12-09 20:42:41,483 INFO L258 CegarLoopResult]: At program point L21-2(lines 21 26) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_floor_double_~x)) [2020-12-09 20:42:41,483 INFO L262 CegarLoopResult]: For program point L21-3(lines 21 26) no Hoare annotation was computed. [2020-12-09 20:42:41,483 INFO L262 CegarLoopResult]: For program point L30(lines 30 37) no Hoare annotation was computed. [2020-12-09 20:42:41,483 INFO L262 CegarLoopResult]: For program point L72(lines 72 77) no Hoare annotation was computed. [2020-12-09 20:42:41,483 INFO L262 CegarLoopResult]: For program point L72-1(lines 18 79) no Hoare annotation was computed. [2020-12-09 20:42:41,483 INFO L262 CegarLoopResult]: For program point L72-2(lines 72 77) no Hoare annotation was computed. [2020-12-09 20:42:41,483 INFO L262 CegarLoopResult]: For program point L64(lines 64 65) no Hoare annotation was computed. [2020-12-09 20:42:41,483 INFO L262 CegarLoopResult]: For program point L31(lines 31 36) no Hoare annotation was computed. [2020-12-09 20:42:41,483 INFO L262 CegarLoopResult]: For program point L64-2(lines 64 65) no Hoare annotation was computed. [2020-12-09 20:42:41,483 INFO L262 CegarLoopResult]: For program point L56(lines 56 57) no Hoare annotation was computed. [2020-12-09 20:42:41,483 INFO L262 CegarLoopResult]: For program point L40(lines 40 41) no Hoare annotation was computed. [2020-12-09 20:42:41,483 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 20:42:41,483 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 95) no Hoare annotation was computed. [2020-12-09 20:42:41,484 INFO L258 CegarLoopResult]: At program point L82(line 82) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_floor_double_~x)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_floor_double_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|)) [2020-12-09 20:42:41,484 INFO L262 CegarLoopResult]: For program point L49(lines 49 71) no Hoare annotation was computed. [2020-12-09 20:42:41,484 INFO L265 CegarLoopResult]: At program point L99(lines 84 100) the Hoare annotation is: true [2020-12-09 20:42:41,484 INFO L262 CegarLoopResult]: For program point L33(lines 33 36) no Hoare annotation was computed. [2020-12-09 20:42:41,484 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 20:42:41,484 INFO L262 CegarLoopResult]: For program point L58(lines 58 70) no Hoare annotation was computed. [2020-12-09 20:42:41,484 INFO L262 CegarLoopResult]: For program point L50(lines 50 53) no Hoare annotation was computed. [2020-12-09 20:42:41,484 INFO L262 CegarLoopResult]: For program point L42(lines 42 47) no Hoare annotation was computed. [2020-12-09 20:42:41,484 INFO L262 CegarLoopResult]: For program point L59(lines 59 68) no Hoare annotation was computed. [2020-12-09 20:42:41,484 INFO L262 CegarLoopResult]: For program point L59-1(lines 59 68) no Hoare annotation was computed. [2020-12-09 20:42:41,484 INFO L262 CegarLoopResult]: For program point L43(lines 43 44) no Hoare annotation was computed. [2020-12-09 20:42:41,484 INFO L262 CegarLoopResult]: For program point L43-2(lines 43 44) no Hoare annotation was computed. [2020-12-09 20:42:41,488 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 20:42:41,489 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 20:42:41,493 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 20:42:41,493 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 20:42:41,494 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 20:42:41,494 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 20:42:41,494 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 20:42:41,494 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 20:42:41,495 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 20:42:41,495 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 20:42:41,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:42:41 BoogieIcfgContainer [2020-12-09 20:42:41,496 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 20:42:41,497 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 20:42:41,497 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 20:42:41,497 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 20:42:41,497 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:42:39" (3/4) ... [2020-12-09 20:42:41,499 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 20:42:41,506 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-12-09 20:42:41,507 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-09 20:42:41,507 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 20:42:41,507 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 20:42:41,523 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-12-09 20:42:41,523 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) [2020-12-09 20:42:41,524 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result)) && 1bv32 == \result [2020-12-09 20:42:41,541 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_17d6f1e8-e8a0-4391-b140-40f5b34870c8/bin/utaipan/witness.graphml [2020-12-09 20:42:41,541 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 20:42:41,542 INFO L168 Benchmark]: Toolchain (without parser) took 4334.33 ms. Allocated memory was 71.3 MB in the beginning and 92.3 MB in the end (delta: 21.0 MB). Free memory was 56.7 MB in the beginning and 62.7 MB in the end (delta: -6.0 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2020-12-09 20:42:41,543 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 71.3 MB. Free memory is still 54.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 20:42:41,543 INFO L168 Benchmark]: CACSL2BoogieTranslator took 173.19 ms. Allocated memory is still 71.3 MB. Free memory was 56.5 MB in the beginning and 45.1 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 20:42:41,543 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.92 ms. Allocated memory is still 71.3 MB. Free memory was 45.1 MB in the beginning and 55.1 MB in the end (delta: -10.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 20:42:41,544 INFO L168 Benchmark]: Boogie Preprocessor took 34.00 ms. Allocated memory is still 71.3 MB. Free memory was 55.1 MB in the beginning and 53.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 20:42:41,544 INFO L168 Benchmark]: RCFGBuilder took 1710.89 ms. Allocated memory was 71.3 MB in the beginning and 92.3 MB in the end (delta: 21.0 MB). Free memory was 53.3 MB in the beginning and 73.6 MB in the end (delta: -20.3 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. [2020-12-09 20:42:41,544 INFO L168 Benchmark]: TraceAbstraction took 2321.80 ms. Allocated memory is still 92.3 MB. Free memory was 73.4 MB in the beginning and 65.6 MB in the end (delta: 7.8 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. [2020-12-09 20:42:41,545 INFO L168 Benchmark]: Witness Printer took 44.55 ms. Allocated memory is still 92.3 MB. Free memory was 65.6 MB in the beginning and 62.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 20:42:41,547 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 71.3 MB. Free memory is still 54.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 173.19 ms. Allocated memory is still 71.3 MB. Free memory was 56.5 MB in the beginning and 45.1 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.92 ms. Allocated memory is still 71.3 MB. Free memory was 45.1 MB in the beginning and 55.1 MB in the end (delta: -10.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.00 ms. Allocated memory is still 71.3 MB. Free memory was 55.1 MB in the beginning and 53.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1710.89 ms. Allocated memory was 71.3 MB in the beginning and 92.3 MB in the end (delta: 21.0 MB). Free memory was 53.3 MB in the beginning and 73.6 MB in the end (delta: -20.3 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2321.80 ms. Allocated memory is still 92.3 MB. Free memory was 73.4 MB in the beginning and 65.6 MB in the end (delta: 7.8 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. * Witness Printer took 44.55 ms. Allocated memory is still 92.3 MB. Free memory was 65.6 MB in the beginning and 62.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 95]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 82]: Loop Invariant [2020-12-09 20:42:41,551 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 20:42:41,551 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 20:42:41,551 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 20:42:41,551 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result)) && 1bv32 == \result - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant [2020-12-09 20:42:41,552 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 20:42:41,552 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 18]: Loop Invariant [2020-12-09 20:42:41,552 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 20:42:41,552 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 20:42:41,552 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 20:42:41,552 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 68 SDtfs, 25 SDslu, 58 SDs, 0 SdLazy, 47 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 41 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 35 ConstructedInterpolants, 11 QuantifiedInterpolants, 1805 SizeOfPredicates, 16 NumberOfNonLiveVariables, 145 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...