./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.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_74288cfd-0870-443c-8415-4520f6891ba3/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/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 bb223ac5dd337697f7c4caeca580bc7e9e7345b8 ................................................................................................................................................................................................................................................................................................................................ 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_74288cfd-0870-443c-8415-4520f6891ba3/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/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 bb223ac5dd337697f7c4caeca580bc7e9e7345b8 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 06:52:51,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 06:52:51,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 06:52:51,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 06:52:51,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 06:52:51,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 06:52:51,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 06:52:51,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 06:52:51,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 06:52:51,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 06:52:51,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 06:52:51,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 06:52:51,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 06:52:51,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 06:52:51,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 06:52:51,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 06:52:51,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 06:52:51,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 06:52:51,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 06:52:51,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 06:52:51,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 06:52:51,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 06:52:51,229 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 06:52:51,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 06:52:51,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 06:52:51,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 06:52:51,233 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 06:52:51,234 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 06:52:51,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 06:52:51,236 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 06:52:51,236 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 06:52:51,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 06:52:51,238 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 06:52:51,239 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 06:52:51,239 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 06:52:51,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 06:52:51,240 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 06:52:51,240 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 06:52:51,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 06:52:51,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 06:52:51,242 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 06:52:51,243 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 06:52:51,263 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 06:52:51,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 06:52:51,264 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 06:52:51,264 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 06:52:51,264 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 06:52:51,264 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 06:52:51,264 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 06:52:51,264 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 06:52:51,264 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 06:52:51,264 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 06:52:51,264 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 06:52:51,265 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 06:52:51,265 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 06:52:51,265 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 06:52:51,265 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 06:52:51,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 06:52:51,266 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 06:52:51,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 06:52:51,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 06:52:51,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 06:52:51,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 06:52:51,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 06:52:51,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 06:52:51,267 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 06:52:51,267 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 06:52:51,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 06:52:51,267 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 06:52:51,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 06:52:51,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 06:52:51,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 06:52:51,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:52:51,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 06:52:51,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 06:52:51,268 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 06:52:51,268 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 06:52:51,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 06:52:51,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 06:52:51,269 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 06:52:51,269 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 06:52:51,269 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_74288cfd-0870-443c-8415-4520f6891ba3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb223ac5dd337697f7c4caeca580bc7e9e7345b8 [2020-12-09 06:52:51,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 06:52:51,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 06:52:51,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 06:52:51,470 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 06:52:51,471 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 06:52:51,472 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2020-12-09 06:52:51,515 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/bin/utaipan/data/d456b7b79/97f1e55155da4cd4a57422b4ce304b42/FLAG022e3a831 [2020-12-09 06:52:51,871 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 06:52:51,871 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2020-12-09 06:52:51,877 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/bin/utaipan/data/d456b7b79/97f1e55155da4cd4a57422b4ce304b42/FLAG022e3a831 [2020-12-09 06:52:51,887 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/bin/utaipan/data/d456b7b79/97f1e55155da4cd4a57422b4ce304b42 [2020-12-09 06:52:51,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 06:52:51,890 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 06:52:51,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 06:52:51,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 06:52:51,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 06:52:51,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:52:51" (1/1) ... [2020-12-09 06:52:51,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b186a2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:51, skipping insertion in model container [2020-12-09 06:52:51,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:52:51" (1/1) ... [2020-12-09 06:52:51,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 06:52:51,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:52:52,068 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_74288cfd-0870-443c-8415-4520f6891ba3/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c[3330,3343] [2020-12-09 06:52:52,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:52:52,078 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 06:52:52,103 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_74288cfd-0870-443c-8415-4520f6891ba3/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c[3330,3343] [2020-12-09 06:52:52,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:52:52,117 INFO L208 MainTranslator]: Completed translation [2020-12-09 06:52:52,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:52 WrapperNode [2020-12-09 06:52:52,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 06:52:52,118 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 06:52:52,118 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 06:52:52,118 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 06:52:52,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:52" (1/1) ... [2020-12-09 06:52:52,131 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:52" (1/1) ... [2020-12-09 06:52:52,151 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 06:52:52,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 06:52:52,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 06:52:52,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 06:52:52,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:52" (1/1) ... [2020-12-09 06:52:52,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:52" (1/1) ... [2020-12-09 06:52:52,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:52" (1/1) ... [2020-12-09 06:52:52,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:52" (1/1) ... [2020-12-09 06:52:52,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:52" (1/1) ... [2020-12-09 06:52:52,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:52" (1/1) ... [2020-12-09 06:52:52,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:52" (1/1) ... [2020-12-09 06:52:52,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 06:52:52,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 06:52:52,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 06:52:52,178 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 06:52:52,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/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 06:52:52,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 06:52:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 06:52:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-09 06:52:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 06:52:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-09 06:52:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 06:52:52,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 06:52:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 06:52:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-12-09 06:52:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 06:52:52,616 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 06:52:52,616 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-09 06:52:52,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:52:52 BoogieIcfgContainer [2020-12-09 06:52:52,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 06:52:52,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 06:52:52,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 06:52:52,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 06:52:52,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:52:51" (1/3) ... [2020-12-09 06:52:52,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125441c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:52:52, skipping insertion in model container [2020-12-09 06:52:52,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:52" (2/3) ... [2020-12-09 06:52:52,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125441c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:52:52, skipping insertion in model container [2020-12-09 06:52:52,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:52:52" (3/3) ... [2020-12-09 06:52:52,631 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620b.c [2020-12-09 06:52:52,645 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 06:52:52,648 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 06:52:52,658 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 06:52:52,679 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 06:52:52,679 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 06:52:52,679 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 06:52:52,679 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 06:52:52,679 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 06:52:52,679 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 06:52:52,679 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 06:52:52,679 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 06:52:52,688 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-12-09 06:52:52,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 06:52:52,691 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:52:52,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:52:52,692 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:52:52,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:52:52,696 INFO L82 PathProgramCache]: Analyzing trace with hash -37158554, now seen corresponding path program 1 times [2020-12-09 06:52:52,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:52:52,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825704922] [2020-12-09 06:52:52,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:52:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:52:52,813 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 06:52:52,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825704922] [2020-12-09 06:52:52,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:52:52,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:52:52,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5446679] [2020-12-09 06:52:52,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 06:52:52,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:52:52,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 06:52:52,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 06:52:52,833 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-12-09 06:52:52,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:52:52,847 INFO L93 Difference]: Finished difference Result 49 states and 75 transitions. [2020-12-09 06:52:52,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 06:52:52,848 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-09 06:52:52,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:52:52,854 INFO L225 Difference]: With dead ends: 49 [2020-12-09 06:52:52,854 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 06:52:52,856 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 06:52:52,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 06:52:52,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-09 06:52:52,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 06:52:52,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-12-09 06:52:52,877 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 8 [2020-12-09 06:52:52,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:52:52,877 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-12-09 06:52:52,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 06:52:52,877 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-12-09 06:52:52,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 06:52:52,878 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:52:52,878 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:52:52,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 06:52:52,878 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:52:52,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:52:52,879 INFO L82 PathProgramCache]: Analyzing trace with hash -276774099, now seen corresponding path program 1 times [2020-12-09 06:52:52,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:52:52,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268769477] [2020-12-09 06:52:52,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:52:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 06:52:52,942 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 06:52:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 06:52:52,971 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 06:52:52,988 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 06:52:52,989 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 06:52:52,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 06:52:53,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:52:53 BoogieIcfgContainer [2020-12-09 06:52:53,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 06:52:53,013 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 06:52:53,013 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 06:52:53,013 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 06:52:53,013 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:52:52" (3/4) ... [2020-12-09 06:52:53,015 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 06:52:53,015 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 06:52:53,017 INFO L168 Benchmark]: Toolchain (without parser) took 1126.26 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 59.6 MB in the beginning and 62.9 MB in the end (delta: -3.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. [2020-12-09 06:52:53,017 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 96.5 MB. Free memory is still 76.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:52:53,018 INFO L168 Benchmark]: CACSL2BoogieTranslator took 226.08 ms. Allocated memory is still 96.5 MB. Free memory was 59.4 MB in the beginning and 70.2 MB in the end (delta: -10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 06:52:53,018 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.69 ms. Allocated memory is still 96.5 MB. Free memory was 70.2 MB in the beginning and 67.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:52:53,019 INFO L168 Benchmark]: Boogie Preprocessor took 25.06 ms. Allocated memory is still 96.5 MB. Free memory was 67.9 MB in the beginning and 66.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:52:53,019 INFO L168 Benchmark]: RCFGBuilder took 446.47 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 66.1 MB in the beginning and 92.7 MB in the end (delta: -26.6 MB). Peak memory consumption was 38.6 MB. Max. memory is 16.1 GB. [2020-12-09 06:52:53,020 INFO L168 Benchmark]: TraceAbstraction took 386.98 ms. Allocated memory is still 117.4 MB. Free memory was 92.2 MB in the beginning and 63.4 MB in the end (delta: 28.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-12-09 06:52:53,020 INFO L168 Benchmark]: Witness Printer took 2.81 ms. Allocated memory is still 117.4 MB. Free memory was 63.4 MB in the beginning and 62.9 MB in the end (delta: 564.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:52:53,023 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 96.5 MB. Free memory is still 76.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 226.08 ms. Allocated memory is still 96.5 MB. Free memory was 59.4 MB in the beginning and 70.2 MB in the end (delta: -10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.69 ms. Allocated memory is still 96.5 MB. Free memory was 70.2 MB in the beginning and 67.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.06 ms. Allocated memory is still 96.5 MB. Free memory was 67.9 MB in the beginning and 66.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 446.47 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 66.1 MB in the beginning and 92.7 MB in the end (delta: -26.6 MB). Peak memory consumption was 38.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 386.98 ms. Allocated memory is still 117.4 MB. Free memory was 92.2 MB in the beginning and 63.4 MB in the end (delta: 28.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Witness Printer took 2.81 ms. Allocated memory is still 117.4 MB. Free memory was 63.4 MB in the beginning and 62.9 MB in the end (delta: 564.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 144]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 143, overapproximation of someUnaryDOUBLEoperation at line 46, overapproximation of bitwiseAnd at line 64, overapproximation of someUnaryFLOAToperation at line 139, overapproximation of someBinaryArithmeticFLOAToperation at line 67. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L31-L36] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L38-L43] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L45-L49] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L51-L53] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L139] float x = -0.0f; [L56] float w, s1, s2, z; [L57] __int32_t ix, hx, id; VAL [aT_atan={11:0}, atanhi_atan={9:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (hx) = gf_u.word [L64] ix = hx & 0x7fffffff VAL [aT_atan={11:0}, atanhi_atan={9:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L65] COND TRUE ix >= 0x50800000 [L66] COND FALSE !(((ix) > 0x7f800000L)) [L68] COND FALSE !(hx > 0) [L71] EXPR atanhi_atan[3] [L71] EXPR atanlo_atan[3] [L71] return -atanhi_atan[3] - atanlo_atan[3]; [L140] float res = atan_float(x); [L143] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [aT_atan={11:0}, atanhi_atan={9:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L143] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L144] reach_error() VAL [aT_atan={11:0}, atanhi_atan={9:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 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=25occurred 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 06:52:54,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 06:52:54,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 06:52:54,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 06:52:54,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 06:52:54,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 06:52:54,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 06:52:54,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 06:52:54,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 06:52:54,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 06:52:54,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 06:52:54,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 06:52:54,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 06:52:54,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 06:52:54,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 06:52:54,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 06:52:54,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 06:52:54,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 06:52:54,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 06:52:54,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 06:52:54,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 06:52:54,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 06:52:54,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 06:52:54,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 06:52:54,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 06:52:54,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 06:52:54,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 06:52:54,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 06:52:54,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 06:52:54,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 06:52:54,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 06:52:54,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 06:52:54,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 06:52:54,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 06:52:54,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 06:52:54,752 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 06:52:54,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 06:52:54,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 06:52:54,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 06:52:54,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 06:52:54,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 06:52:54,755 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 06:52:54,773 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 06:52:54,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 06:52:54,774 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 06:52:54,774 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 06:52:54,774 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 06:52:54,775 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 06:52:54,775 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 06:52:54,775 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 06:52:54,775 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 06:52:54,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 06:52:54,776 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 06:52:54,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 06:52:54,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 06:52:54,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 06:52:54,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 06:52:54,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 06:52:54,776 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 06:52:54,777 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 06:52:54,777 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 06:52:54,777 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 06:52:54,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 06:52:54,777 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 06:52:54,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 06:52:54,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 06:52:54,777 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 06:52:54,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 06:52:54,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:52:54,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 06:52:54,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 06:52:54,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 06:52:54,778 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 06:52:54,778 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 06:52:54,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 06:52:54,779 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 06:52:54,779 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 06:52:54,779 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_74288cfd-0870-443c-8415-4520f6891ba3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb223ac5dd337697f7c4caeca580bc7e9e7345b8 [2020-12-09 06:52:54,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 06:52:55,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 06:52:55,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 06:52:55,014 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 06:52:55,014 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 06:52:55,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2020-12-09 06:52:55,056 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/bin/utaipan/data/c5aa61511/10a4529605af463b8fbc89a5d3047df7/FLAGe27d0e83e [2020-12-09 06:52:55,478 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 06:52:55,478 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2020-12-09 06:52:55,484 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/bin/utaipan/data/c5aa61511/10a4529605af463b8fbc89a5d3047df7/FLAGe27d0e83e [2020-12-09 06:52:55,493 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/bin/utaipan/data/c5aa61511/10a4529605af463b8fbc89a5d3047df7 [2020-12-09 06:52:55,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 06:52:55,496 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 06:52:55,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 06:52:55,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 06:52:55,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 06:52:55,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:52:55" (1/1) ... [2020-12-09 06:52:55,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@754567e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:55, skipping insertion in model container [2020-12-09 06:52:55,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:52:55" (1/1) ... [2020-12-09 06:52:55,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 06:52:55,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:52:55,640 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_74288cfd-0870-443c-8415-4520f6891ba3/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c[3330,3343] [2020-12-09 06:52:55,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:52:55,653 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 06:52:55,681 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_74288cfd-0870-443c-8415-4520f6891ba3/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c[3330,3343] [2020-12-09 06:52:55,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:52:55,718 INFO L208 MainTranslator]: Completed translation [2020-12-09 06:52:55,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:55 WrapperNode [2020-12-09 06:52:55,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 06:52:55,720 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 06:52:55,720 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 06:52:55,720 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 06:52:55,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:55" (1/1) ... [2020-12-09 06:52:55,736 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:55" (1/1) ... [2020-12-09 06:52:55,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 06:52:55,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 06:52:55,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 06:52:55,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 06:52:55,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:55" (1/1) ... [2020-12-09 06:52:55,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:55" (1/1) ... [2020-12-09 06:52:55,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:55" (1/1) ... [2020-12-09 06:52:55,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:55" (1/1) ... [2020-12-09 06:52:55,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:55" (1/1) ... [2020-12-09 06:52:55,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:55" (1/1) ... [2020-12-09 06:52:55,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:55" (1/1) ... [2020-12-09 06:52:55,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 06:52:55,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 06:52:55,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 06:52:55,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 06:52:55,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/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 06:52:55,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2020-12-09 06:52:55,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 06:52:55,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 06:52:55,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-12-09 06:52:55,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-09 06:52:55,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 06:52:55,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 06:52:55,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-12-09 06:52:55,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-09 06:52:55,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 06:53:07,909 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 06:53:07,910 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-09 06:53:07,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:53:07 BoogieIcfgContainer [2020-12-09 06:53:07,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 06:53:07,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 06:53:07,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 06:53:07,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 06:53:07,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:52:55" (1/3) ... [2020-12-09 06:53:07,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c6b53a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:53:07, skipping insertion in model container [2020-12-09 06:53:07,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:52:55" (2/3) ... [2020-12-09 06:53:07,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c6b53a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:53:07, skipping insertion in model container [2020-12-09 06:53:07,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:53:07" (3/3) ... [2020-12-09 06:53:07,917 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620b.c [2020-12-09 06:53:07,926 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 06:53:07,928 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 06:53:07,935 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 06:53:07,950 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 06:53:07,950 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 06:53:07,950 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 06:53:07,950 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 06:53:07,950 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 06:53:07,951 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 06:53:07,951 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 06:53:07,951 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 06:53:07,958 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-12-09 06:53:07,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 06:53:07,962 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:53:07,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:53:07,962 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:53:07,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:53:07,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1030429181, now seen corresponding path program 1 times [2020-12-09 06:53:07,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:53:07,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048943036] [2020-12-09 06:53:07,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/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 06:53:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:53:08,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 06:53:08,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:53:08,745 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 06:53:08,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:53:08,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048943036] [2020-12-09 06:53:08,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:53:08,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:53:08,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081571698] [2020-12-09 06:53:08,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 06:53:08,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:53:08,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 06:53:08,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 06:53:08,759 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-12-09 06:53:08,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:53:08,771 INFO L93 Difference]: Finished difference Result 72 states and 112 transitions. [2020-12-09 06:53:08,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 06:53:08,772 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-09 06:53:08,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:53:08,778 INFO L225 Difference]: With dead ends: 72 [2020-12-09 06:53:08,778 INFO L226 Difference]: Without dead ends: 34 [2020-12-09 06:53:08,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 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 06:53:08,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-09 06:53:08,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-12-09 06:53:08,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-09 06:53:08,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2020-12-09 06:53:08,802 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 10 [2020-12-09 06:53:08,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:53:08,802 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2020-12-09 06:53:08,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 06:53:08,802 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2020-12-09 06:53:08,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 06:53:08,803 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:53:08,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:53:09,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 06:53:09,004 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:53:09,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:53:09,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1304878016, now seen corresponding path program 1 times [2020-12-09 06:53:09,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:53:09,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772391078] [2020-12-09 06:53:09,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/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 06:53:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:53:09,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 06:53:09,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:53:09,868 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 06:53:09,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:53:09,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772391078] [2020-12-09 06:53:09,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:53:09,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 06:53:09,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768197348] [2020-12-09 06:53:09,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 06:53:09,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:53:09,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 06:53:09,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:53:09,871 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand 5 states. [2020-12-09 06:53:16,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:53:16,836 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2020-12-09 06:53:16,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 06:53:16,837 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-09 06:53:16,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:53:16,838 INFO L225 Difference]: With dead ends: 57 [2020-12-09 06:53:16,838 INFO L226 Difference]: Without dead ends: 32 [2020-12-09 06:53:16,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:53:16,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-09 06:53:16,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2020-12-09 06:53:16,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 06:53:16,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-12-09 06:53:16,842 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 11 [2020-12-09 06:53:16,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:53:16,842 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-12-09 06:53:16,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 06:53:16,842 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-12-09 06:53:16,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 06:53:16,843 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:53:16,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:53:17,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 06:53:17,045 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:53:17,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:53:17,047 INFO L82 PathProgramCache]: Analyzing trace with hash -413875709, now seen corresponding path program 1 times [2020-12-09 06:53:17,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:53:17,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177855168] [2020-12-09 06:53:17,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/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 06:53:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:53:17,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 06:53:17,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:53:17,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:53:17,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:53:17,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177855168] [2020-12-09 06:53:17,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:53:17,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 06:53:17,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301944157] [2020-12-09 06:53:17,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 06:53:17,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:53:17,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 06:53:17,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:53:17,967 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 5 states. [2020-12-09 06:53:26,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:53:26,708 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2020-12-09 06:53:26,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 06:53:26,709 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 06:53:26,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:53:26,709 INFO L225 Difference]: With dead ends: 35 [2020-12-09 06:53:26,709 INFO L226 Difference]: Without dead ends: 32 [2020-12-09 06:53:26,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:53:26,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-09 06:53:26,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2020-12-09 06:53:26,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-09 06:53:26,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-12-09 06:53:26,714 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 13 [2020-12-09 06:53:26,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:53:26,714 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-12-09 06:53:26,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 06:53:26,714 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-12-09 06:53:26,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 06:53:26,715 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:53:26,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:53:26,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 06:53:26,916 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:53:26,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:53:26,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1848532469, now seen corresponding path program 1 times [2020-12-09 06:53:26,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:53:26,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060756975] [2020-12-09 06:53:26,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 06:53:28,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:53:28,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 06:53:28,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:53:28,716 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 06:53:28,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:53:28,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060756975] [2020-12-09 06:53:28,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:53:28,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:53:28,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292426510] [2020-12-09 06:53:28,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:53:28,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:53:28,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:53:28,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:53:28,718 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 4 states. [2020-12-09 06:53:28,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:53:28,789 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-12-09 06:53:28,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:53:28,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-09 06:53:28,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:53:28,793 INFO L225 Difference]: With dead ends: 32 [2020-12-09 06:53:28,793 INFO L226 Difference]: Without dead ends: 18 [2020-12-09 06:53:28,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:53:28,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-09 06:53:28,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-09 06:53:28,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-09 06:53:28,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2020-12-09 06:53:28,797 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 16 [2020-12-09 06:53:28,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:53:28,797 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2020-12-09 06:53:28,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:53:28,797 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2020-12-09 06:53:28,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 06:53:28,798 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:53:28,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:53:28,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 06:53:28,999 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:53:28,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:53:29,000 INFO L82 PathProgramCache]: Analyzing trace with hash 712330328, now seen corresponding path program 1 times [2020-12-09 06:53:29,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:53:29,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059931100] [2020-12-09 06:53:29,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-09 06:53:29,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:53:29,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-09 06:53:29,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:53:30,053 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 06:53:30,243 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 06:53:30,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:53:30,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059931100] [2020-12-09 06:53:30,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:53:30,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-09 06:53:30,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905354541] [2020-12-09 06:53:30,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 06:53:30,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:53:30,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 06:53:30,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-09 06:53:30,244 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 9 states. [2020-12-09 06:53:31,014 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-12-09 06:53:31,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:53:31,030 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2020-12-09 06:53:31,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 06:53:31,031 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-12-09 06:53:31,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:53:31,031 INFO L225 Difference]: With dead ends: 18 [2020-12-09 06:53:31,031 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 06:53:31,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-12-09 06:53:31,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 06:53:31,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 06:53:31,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 06:53:31,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 06:53:31,032 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-12-09 06:53:31,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:53:31,033 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 06:53:31,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 06:53:31,033 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 06:53:31,033 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 06:53:31,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 06:53:31,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 06:53:31,421 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-12-09 06:53:31,630 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-12-09 06:53:31,707 INFO L262 CegarLoopResult]: For program point L143(line 143) no Hoare annotation was computed. [2020-12-09 06:53:31,708 INFO L262 CegarLoopResult]: For program point L143-2(lines 143 146) no Hoare annotation was computed. [2020-12-09 06:53:31,708 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 06:53:31,708 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 06:53:31,708 INFO L258 CegarLoopResult]: At program point L28(lines 16 29) the Hoare annotation is: false [2020-12-09 06:53:31,708 INFO L262 CegarLoopResult]: For program point L144(line 144) no Hoare annotation was computed. [2020-12-09 06:53:31,708 INFO L262 CegarLoopResult]: For program point L111(lines 111 116) no Hoare annotation was computed. [2020-12-09 06:53:31,708 INFO L258 CegarLoopResult]: At program point L128(lines 119 129) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_atan_float_~x .cse0) (= |ULTIMATE.start_atan_float_#res| .cse0) (= (bvadd |ULTIMATE.start___signbit_float_#res| (_ bv4294967295 32)) (_ bv0 32)) (= currentRoundingMode roundNearestTiesToEven) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= .cse0 ULTIMATE.start___signbit_float_~x) (= .cse0 ULTIMATE.start_main_~res~0) |ULTIMATE.start_main_#t~short32| (= .cse0 (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1))))) [2020-12-09 06:53:31,709 INFO L262 CegarLoopResult]: For program point L122-1(lines 122 126) no Hoare annotation was computed. [2020-12-09 06:53:31,709 INFO L258 CegarLoopResult]: At program point L122-2(lines 122 126) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_atan_float_~x .cse0) (= |ULTIMATE.start_atan_float_#res| .cse0) (= currentRoundingMode roundNearestTiesToEven) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= .cse0 ULTIMATE.start___signbit_float_~x) (= .cse0 ULTIMATE.start_main_~res~0) |ULTIMATE.start_main_#t~short32|)) [2020-12-09 06:53:31,709 INFO L262 CegarLoopResult]: For program point L23(lines 23 27) no Hoare annotation was computed. [2020-12-09 06:53:31,709 INFO L262 CegarLoopResult]: For program point L122-3(lines 122 126) no Hoare annotation was computed. [2020-12-09 06:53:31,709 INFO L262 CegarLoopResult]: For program point L23-1(lines 16 29) no Hoare annotation was computed. [2020-12-09 06:53:31,709 INFO L262 CegarLoopResult]: For program point L23-2(lines 23 27) no Hoare annotation was computed. [2020-12-09 06:53:31,709 INFO L262 CegarLoopResult]: For program point L81(lines 81 97) no Hoare annotation was computed. [2020-12-09 06:53:31,709 INFO L262 CegarLoopResult]: For program point L73(lines 73 98) no Hoare annotation was computed. [2020-12-09 06:53:31,709 INFO L262 CegarLoopResult]: For program point L65(lines 65 72) no Hoare annotation was computed. [2020-12-09 06:53:31,709 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 06:53:31,710 INFO L262 CegarLoopResult]: For program point L90(lines 90 96) no Hoare annotation was computed. [2020-12-09 06:53:31,710 INFO L262 CegarLoopResult]: For program point L90-2(lines 73 98) no Hoare annotation was computed. [2020-12-09 06:53:31,710 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 144) no Hoare annotation was computed. [2020-12-09 06:53:31,710 INFO L265 CegarLoopResult]: At program point L148(lines 131 149) the Hoare annotation is: true [2020-12-09 06:53:31,710 INFO L262 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-12-09 06:53:31,710 INFO L262 CegarLoopResult]: For program point L82(lines 82 88) no Hoare annotation was computed. [2020-12-09 06:53:31,710 INFO L262 CegarLoopResult]: For program point L115-2(line 115) no Hoare annotation was computed. [2020-12-09 06:53:31,710 INFO L258 CegarLoopResult]: At program point L115-3(lines 55 117) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_atan_float_~x .cse0) (= |ULTIMATE.start_atan_float_#res| .cse0) (= currentRoundingMode roundNearestTiesToEven) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))))) [2020-12-09 06:53:31,710 INFO L262 CegarLoopResult]: For program point L74(lines 74 77) no Hoare annotation was computed. [2020-12-09 06:53:31,710 INFO L262 CegarLoopResult]: For program point L74-2(lines 74 77) no Hoare annotation was computed. [2020-12-09 06:53:31,711 INFO L262 CegarLoopResult]: For program point L66(lines 66 67) no Hoare annotation was computed. [2020-12-09 06:53:31,711 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 06:53:31,711 INFO L262 CegarLoopResult]: For program point L75(lines 75 76) no Hoare annotation was computed. [2020-12-09 06:53:31,711 INFO L262 CegarLoopResult]: For program point L59-1(lines 59 63) no Hoare annotation was computed. [2020-12-09 06:53:31,711 INFO L258 CegarLoopResult]: At program point L59-2(lines 59 63) the Hoare annotation is: (and (= ULTIMATE.start_atan_float_~x (fp.neg (_ +zero 8 24))) (= currentRoundingMode roundNearestTiesToEven) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0)))) [2020-12-09 06:53:31,711 INFO L262 CegarLoopResult]: For program point L59-3(lines 59 63) no Hoare annotation was computed. [2020-12-09 06:53:31,711 INFO L262 CegarLoopResult]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2020-12-09 06:53:31,711 INFO L258 CegarLoopResult]: At program point L18-2(lines 18 22) the Hoare annotation is: false [2020-12-09 06:53:31,711 INFO L262 CegarLoopResult]: For program point L68(lines 68 71) no Hoare annotation was computed. [2020-12-09 06:53:31,718 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 06:53:31,723 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 06:53:31,724 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 06:53:31,725 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 06:53:31,726 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 06:53:31,727 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 06:53:31,727 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 06:53:31,728 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 06:53:31,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:53:31 BoogieIcfgContainer [2020-12-09 06:53:31,729 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 06:53:31,730 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 06:53:31,730 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 06:53:31,730 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 06:53:31,730 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:53:07" (3/4) ... [2020-12-09 06:53:31,733 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 06:53:31,743 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-12-09 06:53:31,743 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-09 06:53:31,744 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 06:53:31,744 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 06:53:31,767 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) [2020-12-09 06:53:31,768 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && aux-res == -0.0f && __signbit_float(res) == 1-aux [2020-12-09 06:53:31,769 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~bvadd64(\result, 4294967295bv32) == 0bv32) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) [2020-12-09 06:53:31,793 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_74288cfd-0870-443c-8415-4520f6891ba3/bin/utaipan/witness.graphml [2020-12-09 06:53:31,793 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 06:53:31,794 INFO L168 Benchmark]: Toolchain (without parser) took 36297.96 ms. Allocated memory was 62.9 MB in the beginning and 92.3 MB in the end (delta: 29.4 MB). Free memory was 42.3 MB in the beginning and 70.6 MB in the end (delta: -28.3 MB). Peak memory consumption was 38.5 MB. Max. memory is 16.1 GB. [2020-12-09 06:53:31,794 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 62.9 MB. Free memory is still 45.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:53:31,795 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.68 ms. Allocated memory was 62.9 MB in the beginning and 92.3 MB in the end (delta: 29.4 MB). Free memory was 42.1 MB in the beginning and 75.4 MB in the end (delta: -33.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 06:53:31,795 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.09 ms. Allocated memory is still 92.3 MB. Free memory was 75.4 MB in the beginning and 73.1 MB in the end (delta: 2.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:53:31,795 INFO L168 Benchmark]: Boogie Preprocessor took 30.66 ms. Allocated memory is still 92.3 MB. Free memory was 73.1 MB in the beginning and 70.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:53:31,795 INFO L168 Benchmark]: RCFGBuilder took 12123.17 ms. Allocated memory is still 92.3 MB. Free memory was 70.7 MB in the beginning and 64.6 MB in the end (delta: 6.1 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. [2020-12-09 06:53:31,796 INFO L168 Benchmark]: TraceAbstraction took 23817.17 ms. Allocated memory is still 92.3 MB. Free memory was 64.2 MB in the beginning and 35.2 MB in the end (delta: 29.0 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. [2020-12-09 06:53:31,796 INFO L168 Benchmark]: Witness Printer took 63.78 ms. Allocated memory is still 92.3 MB. Free memory was 35.2 MB in the beginning and 70.6 MB in the end (delta: -35.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:53:31,797 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 62.9 MB. Free memory is still 45.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 222.68 ms. Allocated memory was 62.9 MB in the beginning and 92.3 MB in the end (delta: 29.4 MB). Free memory was 42.1 MB in the beginning and 75.4 MB in the end (delta: -33.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.09 ms. Allocated memory is still 92.3 MB. Free memory was 75.4 MB in the beginning and 73.1 MB in the end (delta: 2.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.66 ms. Allocated memory is still 92.3 MB. Free memory was 73.1 MB in the beginning and 70.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 12123.17 ms. Allocated memory is still 92.3 MB. Free memory was 70.7 MB in the beginning and 64.6 MB in the end (delta: 6.1 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 23817.17 ms. Allocated memory is still 92.3 MB. Free memory was 64.2 MB in the beginning and 35.2 MB in the end (delta: 29.0 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. * Witness Printer took 63.78 ms. Allocated memory is still 92.3 MB. Free memory was 35.2 MB in the beginning and 70.6 MB in the end (delta: -35.5 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 Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 144]: 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: 55]: Loop Invariant [2020-12-09 06:53:31,801 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 06:53:31,802 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) - InvariantResult [Line: 119]: Loop Invariant [2020-12-09 06:53:31,802 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 06:53:31,803 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((((((((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~bvadd64(\result, 4294967295bv32) == 0bv32) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 122]: Loop Invariant [2020-12-09 06:53:31,803 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 06:53:31,804 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((((((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && aux-res == -0.0f && __signbit_float(res) == 1-aux - InvariantResult [Line: 59]: Loop Invariant [2020-12-09 06:53:31,804 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 06:53:31,804 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) - InvariantResult [Line: 131]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 23.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 16.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 123 SDslu, 128 SDs, 0 SdLazy, 62 SolverSat, 10 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 15.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 12 NumberOfFragments, 136 HoareAnnotationTreeSize, 7 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 4.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 62 ConstructedInterpolants, 1 QuantifiedInterpolants, 4756 SizeOfPredicates, 28 NumberOfNonLiveVariables, 513 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...