./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0480.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0480.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/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 bd6800513a0c85eb15605681f4c7c21ff95d3a8c ................................................................................................................................................................................................................................................................................................................. 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_4607d7e5-8e6c-4359-98e4-86e8dad60979/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0480.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/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 bd6800513a0c85eb15605681f4c7c21ff95d3a8c ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:28:07,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:28:07,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:28:07,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:28:07,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:28:07,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:28:07,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:28:07,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:28:07,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:28:07,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:28:07,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:28:07,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:28:07,135 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:28:07,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:28:07,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:28:07,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:28:07,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:28:07,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:28:07,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:28:07,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:28:07,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:28:07,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:28:07,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:28:07,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:28:07,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:28:07,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:28:07,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:28:07,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:28:07,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:28:07,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:28:07,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:28:07,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:28:07,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:28:07,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:28:07,166 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:28:07,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:28:07,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:28:07,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:28:07,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:28:07,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:28:07,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:28:07,170 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:28:07,196 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:28:07,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:28:07,197 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:28:07,198 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:28:07,198 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:28:07,198 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:28:07,198 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:28:07,199 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:28:07,199 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:28:07,199 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:28:07,199 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:28:07,200 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:28:07,200 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:28:07,200 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:28:07,200 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:28:07,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:28:07,202 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:28:07,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:28:07,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:28:07,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:28:07,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:28:07,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:28:07,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:28:07,203 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:28:07,203 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:28:07,204 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:28:07,204 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:28:07,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:28:07,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:28:07,205 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:28:07,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:28:07,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:28:07,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:28:07,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:28:07,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:28:07,206 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:28:07,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:28:07,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:28:07,207 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:28:07,207 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:28:07,208 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_4607d7e5-8e6c-4359-98e4-86e8dad60979/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd6800513a0c85eb15605681f4c7c21ff95d3a8c [2020-11-28 07:28:07,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:28:07,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:28:07,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:28:07,519 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:28:07,522 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:28:07,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0480.c [2020-11-28 07:28:07,622 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/bin/utaipan/data/7845a0966/e48eb43520164c4a86df609f991b5fe8/FLAG2a68bedd0 [2020-11-28 07:28:08,220 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:28:08,221 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/sv-benchmarks/c/float-newlib/float_req_bl_0480.c [2020-11-28 07:28:08,238 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/bin/utaipan/data/7845a0966/e48eb43520164c4a86df609f991b5fe8/FLAG2a68bedd0 [2020-11-28 07:28:08,544 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/bin/utaipan/data/7845a0966/e48eb43520164c4a86df609f991b5fe8 [2020-11-28 07:28:08,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:28:08,548 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:28:08,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:28:08,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:28:08,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:28:08,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:28:08" (1/1) ... [2020-11-28 07:28:08,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bee4b84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:08, skipping insertion in model container [2020-11-28 07:28:08,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:28:08" (1/1) ... [2020-11-28 07:28:08,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:28:08,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:28:08,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:28:08,856 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:28:08,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:28:08,920 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:28:08,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:08 WrapperNode [2020-11-28 07:28:08,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:28:08,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:28:08,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:28:08,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:28:08,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:08" (1/1) ... [2020-11-28 07:28:08,946 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:08" (1/1) ... [2020-11-28 07:28:08,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:28:08,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:28:08,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:28:08,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:28:08,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:08" (1/1) ... [2020-11-28 07:28:08,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:08" (1/1) ... [2020-11-28 07:28:08,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:08" (1/1) ... [2020-11-28 07:28:09,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:08" (1/1) ... [2020-11-28 07:28:09,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:08" (1/1) ... [2020-11-28 07:28:09,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:08" (1/1) ... [2020-11-28 07:28:09,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:08" (1/1) ... [2020-11-28 07:28:09,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:28:09,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:28:09,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:28:09,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:28:09,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:28:09,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:28:09,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:28:09,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-28 07:28:09,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:28:09,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 07:28:09,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:28:09,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:28:09,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:28:09,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:28:10,444 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:28:10,444 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-11-28 07:28:10,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:28:10 BoogieIcfgContainer [2020-11-28 07:28:10,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:28:10,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:28:10,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:28:10,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:28:10,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:28:08" (1/3) ... [2020-11-28 07:28:10,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631f52ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:28:10, skipping insertion in model container [2020-11-28 07:28:10,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:08" (2/3) ... [2020-11-28 07:28:10,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631f52ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:28:10, skipping insertion in model container [2020-11-28 07:28:10,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:28:10" (3/3) ... [2020-11-28 07:28:10,456 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0480.c [2020-11-28 07:28:10,467 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:28:10,472 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:28:10,485 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:28:10,512 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:28:10,512 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:28:10,513 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:28:10,513 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:28:10,513 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:28:10,513 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:28:10,513 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:28:10,514 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:28:10,530 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-11-28 07:28:10,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:28:10,535 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:10,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:10,537 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:10,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:10,543 INFO L82 PathProgramCache]: Analyzing trace with hash -378165890, now seen corresponding path program 1 times [2020-11-28 07:28:10,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:10,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325126478] [2020-11-28 07:28:10,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:10,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:10,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325126478] [2020-11-28 07:28:10,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:10,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:28:10,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113392679] [2020-11-28 07:28:10,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:28:10,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:10,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:28:10,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:28:10,759 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 2 states. [2020-11-28 07:28:10,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:10,798 INFO L93 Difference]: Finished difference Result 101 states and 167 transitions. [2020-11-28 07:28:10,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:28:10,800 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 07:28:10,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:10,819 INFO L225 Difference]: With dead ends: 101 [2020-11-28 07:28:10,819 INFO L226 Difference]: Without dead ends: 49 [2020-11-28 07:28:10,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:28:10,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-28 07:28:10,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-11-28 07:28:10,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-28 07:28:10,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2020-11-28 07:28:10,877 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 8 [2020-11-28 07:28:10,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:10,878 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2020-11-28 07:28:10,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:28:10,878 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2020-11-28 07:28:10,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:28:10,879 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:10,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:10,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:28:10,880 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:10,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:10,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1202632219, now seen corresponding path program 1 times [2020-11-28 07:28:10,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:10,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618552120] [2020-11-28 07:28:10,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:28:10,960 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:28:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:28:11,035 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:28:11,077 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:28:11,077 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:28:11,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:28:11,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:28:11 BoogieIcfgContainer [2020-11-28 07:28:11,116 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:28:11,116 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:28:11,117 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:28:11,117 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:28:11,117 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:28:10" (3/4) ... [2020-11-28 07:28:11,121 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 07:28:11,121 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:28:11,124 INFO L168 Benchmark]: Toolchain (without parser) took 2574.08 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 57.8 MB in the beginning and 57.3 MB in the end (delta: 519.3 kB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:11,125 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 90.2 MB. Free memory was 49.5 MB in the beginning and 49.4 MB in the end (delta: 39.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:28:11,128 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.34 ms. Allocated memory is still 90.2 MB. Free memory was 57.4 MB in the beginning and 63.2 MB in the end (delta: -5.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:11,129 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.85 ms. Allocated memory is still 90.2 MB. Free memory was 63.2 MB in the beginning and 60.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:11,130 INFO L168 Benchmark]: Boogie Preprocessor took 54.66 ms. Allocated memory is still 90.2 MB. Free memory was 60.7 MB in the beginning and 58.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:11,132 INFO L168 Benchmark]: RCFGBuilder took 1409.52 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 58.2 MB in the beginning and 82.4 MB in the end (delta: -24.2 MB). Peak memory consumption was 35.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:11,134 INFO L168 Benchmark]: TraceAbstraction took 667.83 ms. Allocated memory is still 109.1 MB. Free memory was 82.4 MB in the beginning and 58.0 MB in the end (delta: 24.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:11,134 INFO L168 Benchmark]: Witness Printer took 5.18 ms. Allocated memory is still 109.1 MB. Free memory was 58.0 MB in the beginning and 57.3 MB in the end (delta: 777.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:11,138 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 90.2 MB. Free memory was 49.5 MB in the beginning and 49.4 MB in the end (delta: 39.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 371.34 ms. Allocated memory is still 90.2 MB. Free memory was 57.4 MB in the beginning and 63.2 MB in the end (delta: -5.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.85 ms. Allocated memory is still 90.2 MB. Free memory was 63.2 MB in the beginning and 60.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.66 ms. Allocated memory is still 90.2 MB. Free memory was 60.7 MB in the beginning and 58.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1409.52 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 58.2 MB in the beginning and 82.4 MB in the end (delta: -24.2 MB). Peak memory consumption was 35.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 667.83 ms. Allocated memory is still 109.1 MB. Free memory was 82.4 MB in the beginning and 58.0 MB in the end (delta: 24.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 5.18 ms. Allocated memory is still 109.1 MB. Free memory was 58.0 MB in the beginning and 57.3 MB in the end (delta: 777.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 183, overapproximation of someUnaryDOUBLEoperation at line 86, overapproximation of bitwiseAnd at line 100, overapproximation of someBinaryArithmeticFLOAToperation at line 105. Possible FailurePath: [L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L83-L90] static const float one_acos = 1.0000000000e+00, pi = 3.1415925026e+00, pio2_hi_acos = 1.5707962513e+00, pio2_lo_acos = 7.5497894159e-08, pS0_acos = 1.6666667163e-01, pS1_acos = -3.2556581497e-01, pS2_acos = 2.0121252537e-01, pS3_acos = -4.0055535734e-02, pS4_acos = 7.9153501429e-04, pS5_acos = 3.4793309169e-05, qS1_acos = -2.4033949375e+00, qS2_acos = 2.0209457874e+00, qS3_acos = -6.8828397989e-01, qS4_acos = 7.7038154006e-02; [L179] float x = 1.0f; [L93] float z, p, q, r, w, s, c, df; [L94] __int32_t hx, ix; VAL [one_acos=1, one_sqrt=1, pi=15707962513/10000000000, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000] [L96] ieee_float_shape_type gf_u; [L97] gf_u.value = (x) [L98] EXPR gf_u.word [L98] (hx) = gf_u.word [L100] ix = hx & 0x7fffffff VAL [one_acos=1, one_sqrt=1, pi=15707962513/10000000000, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000] [L101] COND TRUE ix == 0x3f800000 [L102] COND FALSE !(hx > 0) [L105] return pi + (float)2.0 * pio2_lo_acos; VAL [one_acos=1, one_sqrt=1, pi=15707962513/5000000000, pi=15707962513/10000000000, pi=75497894159/1000000000000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000] [L180] float res = __ieee754_acosf(x); [L183] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [one_acos=1, one_sqrt=1, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, pi=15707962513/10000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000] [L183] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L3] __assert_fail("0", "float_req_bl_0480.c", 3, "reach_error") VAL [one_acos=1, one_sqrt=1, pi=75497894159/1000000000000000000, pi=15707962513/5000000000, pi=15707962513/10000000000, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 67 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=51occurred 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-a4ecdab [2020-11-28 07:28:13,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:28:13,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:28:13,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:28:13,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:28:13,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:28:13,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:28:13,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:28:13,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:28:13,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:28:13,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:28:13,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:28:13,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:28:13,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:28:13,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:28:13,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:28:13,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:28:13,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:28:13,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:28:13,890 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:28:13,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:28:13,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:28:13,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:28:13,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:28:13,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:28:13,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:28:13,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:28:13,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:28:13,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:28:13,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:28:13,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:28:13,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:28:13,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:28:13,925 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:28:13,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:28:13,926 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:28:13,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:28:13,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:28:13,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:28:13,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:28:13,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:28:13,930 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-28 07:28:13,956 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:28:13,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:28:13,957 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:28:13,958 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:28:13,958 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:28:13,958 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:28:13,958 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:28:13,958 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:28:13,959 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:28:13,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:28:13,960 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:28:13,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:28:13,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:28:13,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:28:13,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:28:13,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:28:13,961 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:28:13,961 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:28:13,962 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:28:13,962 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:28:13,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:28:13,962 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:28:13,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:28:13,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:28:13,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:28:13,963 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:28:13,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:28:13,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:28:13,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:28:13,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:28:13,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:28:13,964 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:28:13,965 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:28:13,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:28:13,965 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:28:13,965 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:28:13,966 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_4607d7e5-8e6c-4359-98e4-86e8dad60979/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd6800513a0c85eb15605681f4c7c21ff95d3a8c [2020-11-28 07:28:14,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:28:14,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:28:14,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:28:14,428 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:28:14,430 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:28:14,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0480.c [2020-11-28 07:28:14,517 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/bin/utaipan/data/20559e846/e1d274d6f6ec41a2bc80ab7cc70c340f/FLAG453a4da2c [2020-11-28 07:28:15,081 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:28:15,082 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/sv-benchmarks/c/float-newlib/float_req_bl_0480.c [2020-11-28 07:28:15,099 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/bin/utaipan/data/20559e846/e1d274d6f6ec41a2bc80ab7cc70c340f/FLAG453a4da2c [2020-11-28 07:28:15,464 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/bin/utaipan/data/20559e846/e1d274d6f6ec41a2bc80ab7cc70c340f [2020-11-28 07:28:15,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:28:15,469 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:28:15,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:28:15,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:28:15,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:28:15,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:28:15" (1/1) ... [2020-11-28 07:28:15,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@600a768a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:15, skipping insertion in model container [2020-11-28 07:28:15,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:28:15" (1/1) ... [2020-11-28 07:28:15,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:28:15,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:28:15,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:28:15,850 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:28:15,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:28:15,954 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:28:15,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:15 WrapperNode [2020-11-28 07:28:15,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:28:15,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:28:15,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:28:15,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:28:15,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:15" (1/1) ... [2020-11-28 07:28:15,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:15" (1/1) ... [2020-11-28 07:28:16,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:28:16,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:28:16,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:28:16,060 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:28:16,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:15" (1/1) ... [2020-11-28 07:28:16,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:15" (1/1) ... [2020-11-28 07:28:16,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:15" (1/1) ... [2020-11-28 07:28:16,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:15" (1/1) ... [2020-11-28 07:28:16,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:15" (1/1) ... [2020-11-28 07:28:16,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:15" (1/1) ... [2020-11-28 07:28:16,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:15" (1/1) ... [2020-11-28 07:28:16,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:28:16,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:28:16,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:28:16,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:28:16,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:28:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 07:28:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:28:16,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-28 07:28:16,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 07:28:16,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:28:16,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:28:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-28 07:28:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 07:28:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:28:27,641 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:28:27,642 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-11-28 07:28:27,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:28:27 BoogieIcfgContainer [2020-11-28 07:28:27,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:28:27,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:28:27,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:28:27,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:28:27,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:28:15" (1/3) ... [2020-11-28 07:28:27,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37eb245b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:28:27, skipping insertion in model container [2020-11-28 07:28:27,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:15" (2/3) ... [2020-11-28 07:28:27,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37eb245b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:28:27, skipping insertion in model container [2020-11-28 07:28:27,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:28:27" (3/3) ... [2020-11-28 07:28:27,651 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0480.c [2020-11-28 07:28:27,678 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:28:27,682 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:28:27,695 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:28:27,720 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:28:27,721 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:28:27,721 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:28:27,721 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:28:27,721 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:28:27,721 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:28:27,722 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:28:27,722 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:28:27,737 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2020-11-28 07:28:27,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:28:27,742 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:27,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:27,744 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:27,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:27,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1036093437, now seen corresponding path program 1 times [2020-11-28 07:28:27,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:28:27,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2043702245] [2020-11-28 07:28:27,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-28 07:28:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:28,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 07:28:28,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:28:28,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:28,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:28:28,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:28,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2043702245] [2020-11-28 07:28:28,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:28,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 07:28:28,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932130394] [2020-11-28 07:28:28,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:28:28,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:28:28,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:28:28,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:28:28,438 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 2 states. [2020-11-28 07:28:28,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:28,464 INFO L93 Difference]: Finished difference Result 151 states and 249 transitions. [2020-11-28 07:28:28,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:28:28,466 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-28 07:28:28,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:28,477 INFO L225 Difference]: With dead ends: 151 [2020-11-28 07:28:28,477 INFO L226 Difference]: Without dead ends: 73 [2020-11-28 07:28:28,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:28:28,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-28 07:28:28,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-11-28 07:28:28,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-28 07:28:28,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 101 transitions. [2020-11-28 07:28:28,523 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 101 transitions. Word has length 10 [2020-11-28 07:28:28,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:28,524 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 101 transitions. [2020-11-28 07:28:28,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:28:28,529 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 101 transitions. [2020-11-28 07:28:28,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:28:28,530 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:28,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:28,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:28:28,754 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:28,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:28,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1299213760, now seen corresponding path program 1 times [2020-11-28 07:28:28,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:28:28,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608292443] [2020-11-28 07:28:28,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-28 07:28:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:29,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 07:28:29,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:28:29,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:29,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:28:29,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:29,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [608292443] [2020-11-28 07:28:29,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:29,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2020-11-28 07:28:29,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001555959] [2020-11-28 07:28:29,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:28:29,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:28:29,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:28:29,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:28:29,476 INFO L87 Difference]: Start difference. First operand 73 states and 101 transitions. Second operand 5 states. [2020-11-28 07:28:37,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:37,757 INFO L93 Difference]: Finished difference Result 85 states and 112 transitions. [2020-11-28 07:28:38,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:28:38,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-28 07:28:38,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:38,027 INFO L225 Difference]: With dead ends: 85 [2020-11-28 07:28:38,027 INFO L226 Difference]: Without dead ends: 82 [2020-11-28 07:28:38,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:28:38,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-11-28 07:28:38,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 75. [2020-11-28 07:28:38,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-28 07:28:38,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 103 transitions. [2020-11-28 07:28:38,042 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 103 transitions. Word has length 11 [2020-11-28 07:28:38,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:38,042 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 103 transitions. [2020-11-28 07:28:38,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:28:38,042 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 103 transitions. [2020-11-28 07:28:38,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:28:38,043 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:38,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:38,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 07:28:38,260 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:38,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:38,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1297366718, now seen corresponding path program 1 times [2020-11-28 07:28:38,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:28:38,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [124973076] [2020-11-28 07:28:38,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-28 07:28:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:39,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:28:39,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:28:39,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:39,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:28:39,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:39,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [124973076] [2020-11-28 07:28:39,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:39,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 07:28:39,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623511425] [2020-11-28 07:28:39,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:28:39,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:28:39,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:28:39,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:28:39,152 INFO L87 Difference]: Start difference. First operand 75 states and 103 transitions. Second operand 6 states. [2020-11-28 07:28:42,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:42,872 INFO L93 Difference]: Finished difference Result 93 states and 121 transitions. [2020-11-28 07:28:43,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:28:43,015 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-28 07:28:43,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:43,016 INFO L225 Difference]: With dead ends: 93 [2020-11-28 07:28:43,016 INFO L226 Difference]: Without dead ends: 60 [2020-11-28 07:28:43,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:28:43,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-28 07:28:43,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 51. [2020-11-28 07:28:43,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-28 07:28:43,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2020-11-28 07:28:43,027 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 11 [2020-11-28 07:28:43,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:43,028 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2020-11-28 07:28:43,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:28:43,028 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2020-11-28 07:28:43,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:28:43,029 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:43,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:43,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 07:28:43,253 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:43,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:43,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1092345056, now seen corresponding path program 1 times [2020-11-28 07:28:43,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:28:43,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398837021] [2020-11-28 07:28:43,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-28 07:28:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:44,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 07:28:44,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:28:44,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:44,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:28:44,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:44,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398837021] [2020-11-28 07:28:44,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:44,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-28 07:28:44,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088991778] [2020-11-28 07:28:44,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 07:28:44,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:28:44,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 07:28:44,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:28:44,372 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand 8 states. [2020-11-28 07:28:44,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:44,520 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2020-11-28 07:28:44,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:28:44,521 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-11-28 07:28:44,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:44,522 INFO L225 Difference]: With dead ends: 58 [2020-11-28 07:28:44,522 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 07:28:44,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:28:44,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 07:28:44,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-28 07:28:44,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 07:28:44,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-11-28 07:28:44,532 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 11 [2020-11-28 07:28:44,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:44,533 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-11-28 07:28:44,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 07:28:44,533 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-11-28 07:28:44,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 07:28:44,534 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:44,535 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:44,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 07:28:44,748 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:44,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:44,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1064969237, now seen corresponding path program 1 times [2020-11-28 07:28:44,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:28:44,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [862892164] [2020-11-28 07:28:44,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-28 07:28:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:45,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 07:28:45,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:28:45,645 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:28:45,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:45,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:28:46,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:46,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [862892164] [2020-11-28 07:28:46,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:46,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 12 [2020-11-28 07:28:46,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862759784] [2020-11-28 07:28:46,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-28 07:28:46,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:28:46,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-28 07:28:46,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-11-28 07:28:46,041 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand 12 states. [2020-11-28 07:28:46,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:46,406 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-11-28 07:28:46,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:28:46,408 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-11-28 07:28:46,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:46,408 INFO L225 Difference]: With dead ends: 16 [2020-11-28 07:28:46,408 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:28:46,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-11-28 07:28:46,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:28:46,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:28:46,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:28:46,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:28:46,410 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-28 07:28:46,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:46,410 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:28:46,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-28 07:28:46,410 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:28:46,411 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:28:46,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-28 07:28:46,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:28:46,915 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-11-28 07:28:47,013 INFO L270 CegarLoopResult]: At program point L52-2(lines 52 61) the Hoare annotation is: false [2020-11-28 07:28:47,013 INFO L274 CegarLoopResult]: For program point L52-3(lines 16 81) no Hoare annotation was computed. [2020-11-28 07:28:47,014 INFO L270 CegarLoopResult]: At program point L52-6(lines 52 61) the Hoare annotation is: false [2020-11-28 07:28:47,014 INFO L274 CegarLoopResult]: For program point L52-7(lines 16 81) no Hoare annotation was computed. [2020-11-28 07:28:47,014 INFO L274 CegarLoopResult]: For program point L102(lines 102 105) no Hoare annotation was computed. [2020-11-28 07:28:47,014 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 07:28:47,014 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-28 07:28:47,014 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:28:47,014 INFO L274 CegarLoopResult]: For program point L37(lines 37 41) no Hoare annotation was computed. [2020-11-28 07:28:47,014 INFO L274 CegarLoopResult]: For program point L37-2(lines 37 41) no Hoare annotation was computed. [2020-11-28 07:28:47,015 INFO L274 CegarLoopResult]: For program point L37-3(lines 37 41) no Hoare annotation was computed. [2020-11-28 07:28:47,015 INFO L274 CegarLoopResult]: For program point L37-5(lines 37 41) no Hoare annotation was computed. [2020-11-28 07:28:47,015 INFO L274 CegarLoopResult]: For program point L54(lines 54 58) no Hoare annotation was computed. [2020-11-28 07:28:47,015 INFO L274 CegarLoopResult]: For program point L21-1(lines 21 25) no Hoare annotation was computed. [2020-11-28 07:28:47,015 INFO L274 CegarLoopResult]: For program point L54-2(lines 54 58) no Hoare annotation was computed. [2020-11-28 07:28:47,015 INFO L270 CegarLoopResult]: At program point L21-2(lines 21 25) the Hoare annotation is: false [2020-11-28 07:28:47,015 INFO L274 CegarLoopResult]: For program point L54-3(lines 54 58) no Hoare annotation was computed. [2020-11-28 07:28:47,016 INFO L274 CegarLoopResult]: For program point L21-3(lines 21 25) no Hoare annotation was computed. [2020-11-28 07:28:47,016 INFO L274 CegarLoopResult]: For program point L54-5(lines 54 58) no Hoare annotation was computed. [2020-11-28 07:28:47,016 INFO L274 CegarLoopResult]: For program point L21-5(lines 21 25) no Hoare annotation was computed. [2020-11-28 07:28:47,016 INFO L270 CegarLoopResult]: At program point L21-6(lines 21 25) the Hoare annotation is: false [2020-11-28 07:28:47,016 INFO L274 CegarLoopResult]: For program point L21-7(lines 21 25) no Hoare annotation was computed. [2020-11-28 07:28:47,017 INFO L270 CegarLoopResult]: At program point L170(lines 161 171) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) ULTIMATE.start___ieee754_acosf_~hx~1) ((_ extract 30 23) ULTIMATE.start___ieee754_acosf_~hx~1) ((_ extract 22 0) ULTIMATE.start___ieee754_acosf_~hx~1)) ((_ to_fp 8 24) currentRoundingMode 1.0))) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start___ieee754_acosf_#res| ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)))) (exists ((currentRoundingMode RoundingMode)) (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) ULTIMATE.start_main_~res~0)) (exists ((currentRoundingMode RoundingMode)) (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) (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)))) (exists ((currentRoundingMode RoundingMode)) (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) ULTIMATE.start___signbit_float_~x)) (exists ((currentRoundingMode RoundingMode)) (= ((_ to_fp 8 24) currentRoundingMode 1.0) ULTIMATE.start___ieee754_acosf_~x)) (= (bvadd ULTIMATE.start___ieee754_acosf_~ix~1 (_ bv3229614080 32)) (_ bv0 32)) (= |ULTIMATE.start___signbit_float_#res| (_ bv0 32)) |ULTIMATE.start_main_#t~short24|) [2020-11-28 07:28:47,017 INFO L274 CegarLoopResult]: For program point L38-2(lines 38 39) no Hoare annotation was computed. [2020-11-28 07:28:47,017 INFO L270 CegarLoopResult]: At program point L38-3(lines 38 39) the Hoare annotation is: false [2020-11-28 07:28:47,017 INFO L274 CegarLoopResult]: For program point L38-4(lines 38 39) no Hoare annotation was computed. [2020-11-28 07:28:47,017 INFO L274 CegarLoopResult]: For program point L38-7(lines 38 39) no Hoare annotation was computed. [2020-11-28 07:28:47,017 INFO L270 CegarLoopResult]: At program point L38-8(lines 38 39) the Hoare annotation is: false [2020-11-28 07:28:47,017 INFO L274 CegarLoopResult]: For program point L38-9(lines 38 39) no Hoare annotation was computed. [2020-11-28 07:28:47,017 INFO L274 CegarLoopResult]: For program point L121(lines 121 158) no Hoare annotation was computed. [2020-11-28 07:28:47,018 INFO L274 CegarLoopResult]: For program point L138-1(lines 138 142) no Hoare annotation was computed. [2020-11-28 07:28:47,018 INFO L270 CegarLoopResult]: At program point L138-2(lines 138 142) the Hoare annotation is: false [2020-11-28 07:28:47,018 INFO L277 CegarLoopResult]: At program point L188(lines 173 189) the Hoare annotation is: true [2020-11-28 07:28:47,018 INFO L274 CegarLoopResult]: For program point L106(lines 106 108) no Hoare annotation was computed. [2020-11-28 07:28:47,018 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:28:47,018 INFO L270 CegarLoopResult]: At program point L157(lines 92 159) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) ULTIMATE.start___ieee754_acosf_~hx~1) ((_ extract 30 23) ULTIMATE.start___ieee754_acosf_~hx~1) ((_ extract 22 0) ULTIMATE.start___ieee754_acosf_~hx~1)) ((_ to_fp 8 24) currentRoundingMode 1.0))) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start___ieee754_acosf_#res| ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)))) (exists ((currentRoundingMode RoundingMode)) (= ((_ to_fp 8 24) currentRoundingMode 1.0) ULTIMATE.start___ieee754_acosf_~x)) (= (bvadd ULTIMATE.start___ieee754_acosf_~ix~1 (_ bv3229614080 32)) (_ bv0 32))) [2020-11-28 07:28:47,019 INFO L274 CegarLoopResult]: For program point L75-1(lines 75 79) no Hoare annotation was computed. [2020-11-28 07:28:47,019 INFO L270 CegarLoopResult]: At program point L75-2(lines 75 79) the Hoare annotation is: false [2020-11-28 07:28:47,019 INFO L274 CegarLoopResult]: For program point L75-3(lines 75 79) no Hoare annotation was computed. [2020-11-28 07:28:47,019 INFO L274 CegarLoopResult]: For program point L75-5(lines 75 79) no Hoare annotation was computed. [2020-11-28 07:28:47,019 INFO L270 CegarLoopResult]: At program point L75-6(lines 75 79) the Hoare annotation is: false [2020-11-28 07:28:47,019 INFO L274 CegarLoopResult]: For program point L75-7(lines 75 79) no Hoare annotation was computed. [2020-11-28 07:28:47,019 INFO L274 CegarLoopResult]: For program point L109(lines 109 158) no Hoare annotation was computed. [2020-11-28 07:28:47,019 INFO L274 CegarLoopResult]: For program point L143(lines 143 147) no Hoare annotation was computed. [2020-11-28 07:28:47,020 INFO L274 CegarLoopResult]: For program point L110(lines 110 111) no Hoare annotation was computed. [2020-11-28 07:28:47,027 INFO L274 CegarLoopResult]: For program point L143-1(lines 133 158) no Hoare annotation was computed. [2020-11-28 07:28:47,028 INFO L274 CegarLoopResult]: For program point L143-2(lines 143 147) no Hoare annotation was computed. [2020-11-28 07:28:47,028 INFO L274 CegarLoopResult]: For program point L44(lines 44 45) no Hoare annotation was computed. [2020-11-28 07:28:47,028 INFO L274 CegarLoopResult]: For program point L44-2(lines 44 45) no Hoare annotation was computed. [2020-11-28 07:28:47,028 INFO L274 CegarLoopResult]: For program point L44-3(lines 44 45) no Hoare annotation was computed. [2020-11-28 07:28:47,028 INFO L274 CegarLoopResult]: For program point L44-5(lines 44 45) no Hoare annotation was computed. [2020-11-28 07:28:47,028 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 07:28:47,028 INFO L274 CegarLoopResult]: For program point L28(lines 28 29) no Hoare annotation was computed. [2020-11-28 07:28:47,029 INFO L274 CegarLoopResult]: For program point L28-1(lines 28 29) no Hoare annotation was computed. [2020-11-28 07:28:47,029 INFO L274 CegarLoopResult]: For program point L95-1(lines 95 99) no Hoare annotation was computed. [2020-11-28 07:28:47,029 INFO L270 CegarLoopResult]: At program point L95-2(lines 95 99) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= ((_ to_fp 8 24) currentRoundingMode 1.0) ULTIMATE.start___ieee754_acosf_~x)) [2020-11-28 07:28:47,029 INFO L274 CegarLoopResult]: For program point L95-3(lines 95 99) no Hoare annotation was computed. [2020-11-28 07:28:47,029 INFO L274 CegarLoopResult]: For program point L63(lines 63 72) no Hoare annotation was computed. [2020-11-28 07:28:47,029 INFO L274 CegarLoopResult]: For program point L63-1(lines 63 72) no Hoare annotation was computed. [2020-11-28 07:28:47,029 INFO L270 CegarLoopResult]: At program point L80(lines 16 81) the Hoare annotation is: false [2020-11-28 07:28:47,030 INFO L270 CegarLoopResult]: At program point L80-1(lines 16 81) the Hoare annotation is: false [2020-11-28 07:28:47,030 INFO L274 CegarLoopResult]: For program point L31(lines 31 32) no Hoare annotation was computed. [2020-11-28 07:28:47,030 INFO L274 CegarLoopResult]: For program point L31-1(lines 31 32) no Hoare annotation was computed. [2020-11-28 07:28:47,030 INFO L274 CegarLoopResult]: For program point L164-1(lines 164 168) no Hoare annotation was computed. [2020-11-28 07:28:47,030 INFO L270 CegarLoopResult]: At program point L164-2(lines 164 168) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) ULTIMATE.start___ieee754_acosf_~hx~1) ((_ extract 30 23) ULTIMATE.start___ieee754_acosf_~hx~1) ((_ extract 22 0) ULTIMATE.start___ieee754_acosf_~hx~1)) ((_ to_fp 8 24) currentRoundingMode 1.0))) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start___ieee754_acosf_#res| ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)))) (exists ((currentRoundingMode RoundingMode)) (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) ULTIMATE.start_main_~res~0)) (exists ((currentRoundingMode RoundingMode)) (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) ULTIMATE.start___signbit_float_~x)) (exists ((currentRoundingMode RoundingMode)) (= ((_ to_fp 8 24) currentRoundingMode 1.0) ULTIMATE.start___ieee754_acosf_~x)) (= (bvadd ULTIMATE.start___ieee754_acosf_~ix~1 (_ bv3229614080 32)) (_ bv0 32)) |ULTIMATE.start_main_#t~short24|) [2020-11-28 07:28:47,030 INFO L274 CegarLoopResult]: For program point L65(lines 65 71) no Hoare annotation was computed. [2020-11-28 07:28:47,031 INFO L274 CegarLoopResult]: For program point L164-3(lines 164 168) no Hoare annotation was computed. [2020-11-28 07:28:47,031 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 07:28:47,031 INFO L274 CegarLoopResult]: For program point L65-2(lines 65 71) no Hoare annotation was computed. [2020-11-28 07:28:47,031 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 07:28:47,031 INFO L274 CegarLoopResult]: For program point L33(lines 33 34) no Hoare annotation was computed. [2020-11-28 07:28:47,031 INFO L274 CegarLoopResult]: For program point L33-1(lines 33 34) no Hoare annotation was computed. [2020-11-28 07:28:47,031 INFO L274 CegarLoopResult]: For program point L67(lines 67 70) no Hoare annotation was computed. [2020-11-28 07:28:47,031 INFO L274 CegarLoopResult]: For program point L67-3(lines 67 70) no Hoare annotation was computed. [2020-11-28 07:28:47,032 INFO L274 CegarLoopResult]: For program point L183(line 183) no Hoare annotation was computed. [2020-11-28 07:28:47,032 INFO L274 CegarLoopResult]: For program point L183-2(lines 183 186) no Hoare annotation was computed. [2020-11-28 07:28:47,032 INFO L274 CegarLoopResult]: For program point L101(lines 101 108) no Hoare annotation was computed. [2020-11-28 07:28:47,045 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,046 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,047 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,055 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,056 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,057 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,058 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,059 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,060 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,061 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,061 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,061 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,061 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,062 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,065 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,065 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,066 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,066 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,066 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,066 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,068 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,068 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,068 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,072 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,072 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,075 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,076 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,076 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,076 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,076 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:28:47 BoogieIcfgContainer [2020-11-28 07:28:47,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:28:47,089 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:28:47,089 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:28:47,090 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:28:47,092 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:28:27" (3/4) ... [2020-11-28 07:28:47,095 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:28:47,121 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2020-11-28 07:28:47,122 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-28 07:28:47,123 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:28:47,123 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:28:47,156 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, 1.0) == x) [2020-11-28 07:28:47,157 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\exists currentRoundingMode : FloatRoundingMode :: ~fp~LONGDOUBLE(hx[31:31], hx[30:23], hx[22:0]) == ~to_fp~LONGDOUBLE(currentRoundingMode, 1.0)) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE()))) && (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, 1.0) == x)) && ~bvadd64(ix, 3229614080bv32) == 0bv32 [2020-11-28 07:28:47,159 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((\exists currentRoundingMode : FloatRoundingMode :: ~fp~LONGDOUBLE(hx[31:31], hx[30:23], hx[22:0]) == ~to_fp~LONGDOUBLE(currentRoundingMode, 1.0)) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE()))) && (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE()) == res)) && (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE()) == x)) && (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, 1.0) == x)) && ~bvadd64(ix, 3229614080bv32) == 0bv32) && aux-res == 0.0f && __signbit_float(res) == 0-aux [2020-11-28 07:28:47,160 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((\exists currentRoundingMode : FloatRoundingMode :: ~fp~LONGDOUBLE(hx[31:31], hx[30:23], hx[22:0]) == ~to_fp~LONGDOUBLE(currentRoundingMode, 1.0)) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE()))) && (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE()) == res)) && (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE()) == x)) && (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, 1.0) == x)) && ~bvadd64(ix, 3229614080bv32) == 0bv32) && \result == 0bv32) && aux-res == 0.0f && __signbit_float(res) == 0-aux [2020-11-28 07:28:47,240 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4607d7e5-8e6c-4359-98e4-86e8dad60979/bin/utaipan/witness.graphml [2020-11-28 07:28:47,240 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:28:47,241 INFO L168 Benchmark]: Toolchain (without parser) took 31771.87 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 36.8 MB in the beginning and 37.4 MB in the end (delta: -696.8 kB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:47,242 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 58.7 MB. Free memory is still 40.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:28:47,242 INFO L168 Benchmark]: CACSL2BoogieTranslator took 484.84 ms. Allocated memory is still 58.7 MB. Free memory was 36.5 MB in the beginning and 22.1 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:47,243 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.54 ms. Allocated memory is still 58.7 MB. Free memory was 22.1 MB in the beginning and 40.8 MB in the end (delta: -18.7 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:47,243 INFO L168 Benchmark]: Boogie Preprocessor took 94.11 ms. Allocated memory is still 58.7 MB. Free memory was 40.8 MB in the beginning and 38.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:47,244 INFO L168 Benchmark]: RCFGBuilder took 11488.67 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 38.0 MB in the beginning and 31.2 MB in the end (delta: 6.9 MB). Peak memory consumption was 19.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:47,244 INFO L168 Benchmark]: TraceAbstraction took 19443.36 ms. Allocated memory is still 71.3 MB. Free memory was 30.5 MB in the beginning and 44.8 MB in the end (delta: -14.2 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:47,245 INFO L168 Benchmark]: Witness Printer took 151.00 ms. Allocated memory is still 71.3 MB. Free memory was 44.8 MB in the beginning and 37.4 MB in the end (delta: 7.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:47,247 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 58.7 MB. Free memory is still 40.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 484.84 ms. Allocated memory is still 58.7 MB. Free memory was 36.5 MB in the beginning and 22.1 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 101.54 ms. Allocated memory is still 58.7 MB. Free memory was 22.1 MB in the beginning and 40.8 MB in the end (delta: -18.7 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 94.11 ms. Allocated memory is still 58.7 MB. Free memory was 40.8 MB in the beginning and 38.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 11488.67 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 38.0 MB in the beginning and 31.2 MB in the end (delta: 6.9 MB). Peak memory consumption was 19.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 19443.36 ms. Allocated memory is still 71.3 MB. Free memory was 30.5 MB in the beginning and 44.8 MB in the end (delta: -14.2 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Witness Printer took 151.00 ms. Allocated memory is still 71.3 MB. Free memory was 44.8 MB in the beginning and 37.4 MB in the end (delta: 7.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 75]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 173]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 92]: Loop Invariant [2020-11-28 07:28:47,265 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,265 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,265 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,266 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,266 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,267 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (((\exists currentRoundingMode : FloatRoundingMode :: ~fp~LONGDOUBLE(hx[31:31], hx[30:23], hx[22:0]) == ~to_fp~LONGDOUBLE(currentRoundingMode, 1.0)) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE()))) && (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, 1.0) == x)) && ~bvadd64(ix, 3229614080bv32) == 0bv32 - InvariantResult [Line: 95]: Loop Invariant [2020-11-28 07:28:47,270 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,271 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, 1.0) == x) - InvariantResult [Line: 138]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 75]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 161]: Loop Invariant [2020-11-28 07:28:47,274 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,274 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,277 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,277 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,277 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,278 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,278 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,278 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,279 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,279 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,279 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,280 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((((((((\exists currentRoundingMode : FloatRoundingMode :: ~fp~LONGDOUBLE(hx[31:31], hx[30:23], hx[22:0]) == ~to_fp~LONGDOUBLE(currentRoundingMode, 1.0)) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE()))) && (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE()) == res)) && (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE()) == x)) && (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, 1.0) == x)) && ~bvadd64(ix, 3229614080bv32) == 0bv32) && \result == 0bv32) && aux-res == 0.0f && __signbit_float(res) == 0-aux - InvariantResult [Line: 164]: Loop Invariant [2020-11-28 07:28:47,281 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,281 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,281 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,281 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,282 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,282 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,283 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,283 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,283 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:47,283 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((((((\exists currentRoundingMode : FloatRoundingMode :: ~fp~LONGDOUBLE(hx[31:31], hx[30:23], hx[22:0]) == ~to_fp~LONGDOUBLE(currentRoundingMode, 1.0)) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE()))) && (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE()) == res)) && (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE()) == x)) && (\exists currentRoundingMode : FloatRoundingMode :: ~to_fp~LONGDOUBLE(currentRoundingMode, 1.0) == x)) && ~bvadd64(ix, 3229614080bv32) == 0bv32) && aux-res == 0.0f && __signbit_float(res) == 0-aux - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 18.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 12.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 282 SDtfs, 226 SDslu, 275 SDs, 0 SdLazy, 42 SolverSat, 11 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 11.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred 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, 16 LocationsWithAnnotation, 16 PreInvPairs, 21 NumberOfFragments, 149 HoareAnnotationTreeSize, 16 FomulaSimplifications, 78 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 16 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 106 ConstructedInterpolants, 20 QuantifiedInterpolants, 4012 SizeOfPredicates, 29 NumberOfNonLiveVariables, 311 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...