./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c -s /tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cbf38875841624eee0d839935b3b6d34a59b0b20 ..................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c -s /tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cbf38875841624eee0d839935b3b6d34a59b0b20 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:51:12,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:51:12,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:51:12,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:51:12,144 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:51:12,145 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:51:12,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:51:12,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:51:12,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:51:12,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:51:12,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:51:12,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:51:12,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:51:12,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:51:12,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:51:12,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:51:12,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:51:12,171 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:51:12,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:51:12,180 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:51:12,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:51:12,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:51:12,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:51:12,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:51:12,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:51:12,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:51:12,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:51:12,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:51:12,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:51:12,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:51:12,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:51:12,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:51:12,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:51:12,198 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:51:12,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:51:12,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:51:12,199 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:51:12,199 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:51:12,199 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:51:12,200 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:51:12,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:51:12,202 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:51:12,226 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:51:12,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:51:12,227 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:51:12,227 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:51:12,227 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:51:12,227 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:51:12,228 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:51:12,228 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:51:12,228 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:51:12,228 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:51:12,228 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:51:12,229 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:51:12,229 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:51:12,229 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:51:12,229 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:51:12,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:51:12,230 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:51:12,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:51:12,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:51:12,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:51:12,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:51:12,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:51:12,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:51:12,231 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:51:12,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:51:12,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:51:12,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:51:12,232 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:51:12,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:51:12,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:51:12,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:51:12,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:51:12,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:51:12,233 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:51:12,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:51:12,233 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:51:12,233 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:51:12,233 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_dacf47b2-732f-4363-a0c9-558ac714ef20/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(__VERIFIER_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 -> cbf38875841624eee0d839935b3b6d34a59b0b20 [2019-11-26 02:51:12,414 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:51:12,427 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:51:12,429 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:51:12,430 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:51:12,431 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:51:12,432 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2019-11-26 02:51:12,484 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/bin/utaipan/data/ce3aca7d5/3f6a3045686447499a623a2b521945cf/FLAG2ee72482d [2019-11-26 02:51:12,815 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:51:12,816 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2019-11-26 02:51:12,822 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/bin/utaipan/data/ce3aca7d5/3f6a3045686447499a623a2b521945cf/FLAG2ee72482d [2019-11-26 02:51:13,202 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/bin/utaipan/data/ce3aca7d5/3f6a3045686447499a623a2b521945cf [2019-11-26 02:51:13,204 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:51:13,205 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:51:13,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:51:13,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:51:13,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:51:13,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:51:13" (1/1) ... [2019-11-26 02:51:13,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45dcf9aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:51:13, skipping insertion in model container [2019-11-26 02:51:13,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:51:13" (1/1) ... [2019-11-26 02:51:13,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:51:13,235 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:51:13,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:51:13,384 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:51:13,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:51:13,487 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:51:13,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:51:13 WrapperNode [2019-11-26 02:51:13,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:51:13,489 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:51:13,489 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:51:13,489 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:51:13,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:51:13" (1/1) ... [2019-11-26 02:51:13,504 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:51:13" (1/1) ... [2019-11-26 02:51:13,524 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:51:13,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:51:13,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:51:13,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:51:13,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:51:13" (1/1) ... [2019-11-26 02:51:13,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:51:13" (1/1) ... [2019-11-26 02:51:13,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:51:13" (1/1) ... [2019-11-26 02:51:13,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:51:13" (1/1) ... [2019-11-26 02:51:13,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:51:13" (1/1) ... [2019-11-26 02:51:13,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:51:13" (1/1) ... [2019-11-26 02:51:13,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:51:13" (1/1) ... [2019-11-26 02:51:13,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:51:13,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:51:13,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:51:13,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:51:13,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:51:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/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 [2019-11-26 02:51:13,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-26 02:51:13,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:51:13,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-26 02:51:13,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:51:13,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:51:13,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:51:13,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:51:13,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:51:13,929 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:51:13,930 INFO L284 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-26 02:51:13,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:51:13 BoogieIcfgContainer [2019-11-26 02:51:13,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:51:13,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:51:13,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:51:13,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:51:13,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:51:13" (1/3) ... [2019-11-26 02:51:13,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf9e2be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:51:13, skipping insertion in model container [2019-11-26 02:51:13,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:51:13" (2/3) ... [2019-11-26 02:51:13,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf9e2be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:51:13, skipping insertion in model container [2019-11-26 02:51:13,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:51:13" (3/3) ... [2019-11-26 02:51:13,950 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071.c [2019-11-26 02:51:13,958 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:51:13,964 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:51:13,973 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:51:14,009 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:51:14,009 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:51:14,009 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:51:14,009 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:51:14,009 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:51:14,009 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:51:14,010 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:51:14,010 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:51:14,022 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-11-26 02:51:14,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:51:14,027 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:51:14,028 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:51:14,028 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:51:14,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:51:14,033 INFO L82 PathProgramCache]: Analyzing trace with hash 801951134, now seen corresponding path program 1 times [2019-11-26 02:51:14,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:51:14,043 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966932289] [2019-11-26 02:51:14,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:51:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:51:14,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:51:14,138 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966932289] [2019-11-26 02:51:14,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:51:14,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:51:14,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26190999] [2019-11-26 02:51:14,144 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:51:14,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:51:14,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:51:14,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:51:14,156 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-11-26 02:51:14,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:51:14,171 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2019-11-26 02:51:14,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:51:14,172 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-26 02:51:14,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:51:14,180 INFO L225 Difference]: With dead ends: 35 [2019-11-26 02:51:14,181 INFO L226 Difference]: Without dead ends: 16 [2019-11-26 02:51:14,183 INFO L630 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 [2019-11-26 02:51:14,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-26 02:51:14,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-26 02:51:14,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-26 02:51:14,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-11-26 02:51:14,213 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 8 [2019-11-26 02:51:14,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:51:14,213 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-11-26 02:51:14,213 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:51:14,213 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-11-26 02:51:14,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:51:14,214 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:51:14,214 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:51:14,214 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:51:14,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:51:14,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1343389023, now seen corresponding path program 1 times [2019-11-26 02:51:14,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:51:14,215 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442413129] [2019-11-26 02:51:14,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:51:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:51:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:51:14,313 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:51:14,313 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:51:14,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:51:14 BoogieIcfgContainer [2019-11-26 02:51:14,335 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:51:14,336 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:51:14,336 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:51:14,336 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:51:14,336 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:51:13" (3/4) ... [2019-11-26 02:51:14,339 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-26 02:51:14,339 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:51:14,341 INFO L168 Benchmark]: Toolchain (without parser) took 1135.26 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -106.9 MB). Peak memory consumption was 4.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:51:14,342 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:51:14,342 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.03 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -159.6 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:51:14,343 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.29 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:51:14,343 INFO L168 Benchmark]: Boogie Preprocessor took 45.32 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:51:14,344 INFO L168 Benchmark]: RCFGBuilder took 361.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:51:14,344 INFO L168 Benchmark]: TraceAbstraction took 403.35 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:51:14,345 INFO L168 Benchmark]: Witness Printer took 3.70 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:51:14,348 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 282.03 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -159.6 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.29 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.32 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 361.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 403.35 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.70 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 57]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 38, overapproximation of bitwiseAnd at line 19. Possible FailurePath: [L52] float x = 0.0f / 0.0f; [L13] __int32_t signbit, w, exponent_less_127; [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (w) = gf_u.word [L19] signbit = w & 0x80000000 [L20] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 [L21] COND FALSE !(exponent_less_127 < 23) [L37] COND TRUE exponent_less_127 == 255 [L38] return x + x; [L53] float res = trunc_float(x); [L44] return x != x; [L56] COND TRUE !isnan_float(res) [L57] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, 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 0.1.24-6b5699a [2019-11-26 02:51:16,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:51:16,156 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:51:16,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:51:16,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:51:16,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:51:16,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:51:16,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:51:16,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:51:16,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:51:16,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:51:16,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:51:16,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:51:16,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:51:16,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:51:16,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:51:16,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:51:16,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:51:16,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:51:16,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:51:16,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:51:16,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:51:16,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:51:16,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:51:16,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:51:16,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:51:16,222 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:51:16,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:51:16,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:51:16,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:51:16,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:51:16,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:51:16,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:51:16,229 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:51:16,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:51:16,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:51:16,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:51:16,231 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:51:16,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:51:16,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:51:16,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:51:16,234 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:51:16,261 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:51:16,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:51:16,271 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:51:16,271 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:51:16,272 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:51:16,272 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:51:16,272 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:51:16,272 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:51:16,273 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:51:16,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:51:16,274 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:51:16,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:51:16,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:51:16,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:51:16,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:51:16,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:51:16,276 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:51:16,276 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:51:16,276 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:51:16,276 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:51:16,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:51:16,277 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:51:16,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:51:16,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:51:16,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:51:16,278 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:51:16,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:51:16,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:51:16,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:51:16,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:51:16,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:51:16,280 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:51:16,280 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:51:16,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:51:16,281 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:51:16,281 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_dacf47b2-732f-4363-a0c9-558ac714ef20/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(__VERIFIER_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 -> cbf38875841624eee0d839935b3b6d34a59b0b20 [2019-11-26 02:51:16,593 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:51:16,603 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:51:16,606 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:51:16,607 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:51:16,608 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:51:16,608 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2019-11-26 02:51:16,656 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/bin/utaipan/data/2132928af/7f6b0cfa727849a3a2f625b0c1219861/FLAG92733ae22 [2019-11-26 02:51:17,059 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:51:17,060 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2019-11-26 02:51:17,065 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/bin/utaipan/data/2132928af/7f6b0cfa727849a3a2f625b0c1219861/FLAG92733ae22 [2019-11-26 02:51:17,077 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/bin/utaipan/data/2132928af/7f6b0cfa727849a3a2f625b0c1219861 [2019-11-26 02:51:17,081 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:51:17,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:51:17,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:51:17,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:51:17,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:51:17,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:51:17" (1/1) ... [2019-11-26 02:51:17,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77691eca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:51:17, skipping insertion in model container [2019-11-26 02:51:17,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:51:17" (1/1) ... [2019-11-26 02:51:17,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:51:17,125 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:51:17,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:51:17,322 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:51:17,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:51:17,384 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:51:17,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:51:17 WrapperNode [2019-11-26 02:51:17,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:51:17,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:51:17,385 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:51:17,385 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:51:17,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:51:17" (1/1) ... [2019-11-26 02:51:17,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:51:17" (1/1) ... [2019-11-26 02:51:17,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:51:17,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:51:17,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:51:17,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:51:17,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:51:17" (1/1) ... [2019-11-26 02:51:17,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:51:17" (1/1) ... [2019-11-26 02:51:17,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:51:17" (1/1) ... [2019-11-26 02:51:17,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:51:17" (1/1) ... [2019-11-26 02:51:17,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:51:17" (1/1) ... [2019-11-26 02:51:17,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:51:17" (1/1) ... [2019-11-26 02:51:17,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:51:17" (1/1) ... [2019-11-26 02:51:17,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:51:17,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:51:17,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:51:17,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:51:17,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:51:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/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 [2019-11-26 02:51:17,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:51:17,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-11-26 02:51:17,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 02:51:17,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:51:17,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:51:17,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-26 02:51:17,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-26 02:51:17,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:51:17,932 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:51:17,932 INFO L284 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-26 02:51:17,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:51:17 BoogieIcfgContainer [2019-11-26 02:51:17,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:51:17,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:51:17,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:51:17,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:51:17,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:51:17" (1/3) ... [2019-11-26 02:51:17,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3384c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:51:17, skipping insertion in model container [2019-11-26 02:51:17,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:51:17" (2/3) ... [2019-11-26 02:51:17,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3384c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:51:17, skipping insertion in model container [2019-11-26 02:51:17,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:51:17" (3/3) ... [2019-11-26 02:51:17,939 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071.c [2019-11-26 02:51:17,952 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:51:17,981 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:51:17,989 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:51:18,007 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:51:18,007 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:51:18,008 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:51:18,008 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:51:18,008 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:51:18,008 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:51:18,008 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:51:18,008 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:51:18,022 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-11-26 02:51:18,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:51:18,030 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:51:18,032 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:51:18,032 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:51:18,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:51:18,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1945097259, now seen corresponding path program 1 times [2019-11-26 02:51:18,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:51:18,047 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352850365] [2019-11-26 02:51:18,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/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 [2019-11-26 02:51:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:51:18,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-26 02:51:18,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:51:18,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:51:18,144 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:51:18,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:51:18,149 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352850365] [2019-11-26 02:51:18,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:51:18,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:51:18,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028706727] [2019-11-26 02:51:18,154 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:51:18,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:51:18,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:51:18,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:51:18,164 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-11-26 02:51:18,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:51:18,178 INFO L93 Difference]: Finished difference Result 40 states and 58 transitions. [2019-11-26 02:51:18,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:51:18,179 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-26 02:51:18,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:51:18,187 INFO L225 Difference]: With dead ends: 40 [2019-11-26 02:51:18,187 INFO L226 Difference]: Without dead ends: 18 [2019-11-26 02:51:18,189 INFO L630 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 [2019-11-26 02:51:18,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-26 02:51:18,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-26 02:51:18,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-26 02:51:18,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-11-26 02:51:18,215 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2019-11-26 02:51:18,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:51:18,216 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-11-26 02:51:18,216 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:51:18,216 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-11-26 02:51:18,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-26 02:51:18,216 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:51:18,216 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:51:18,417 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-26 02:51:18,417 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:51:18,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:51:18,418 INFO L82 PathProgramCache]: Analyzing trace with hash -390209938, now seen corresponding path program 1 times [2019-11-26 02:51:18,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:51:18,418 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533242092] [2019-11-26 02:51:18,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/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 [2019-11-26 02:51:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:51:18,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:51:18,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:51:18,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:51:18,567 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:51:18,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:51:18,602 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533242092] [2019-11-26 02:51:18,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:51:18,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 5 [2019-11-26 02:51:18,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24466771] [2019-11-26 02:51:18,604 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:51:18,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:51:18,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:51:18,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:51:18,605 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2019-11-26 02:51:18,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:51:18,675 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2019-11-26 02:51:18,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:51:18,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-26 02:51:18,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:51:18,677 INFO L225 Difference]: With dead ends: 29 [2019-11-26 02:51:18,678 INFO L226 Difference]: Without dead ends: 24 [2019-11-26 02:51:18,678 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:51:18,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-26 02:51:18,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2019-11-26 02:51:18,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-26 02:51:18,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-11-26 02:51:18,689 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 11 [2019-11-26 02:51:18,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:51:18,692 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-11-26 02:51:18,693 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:51:18,693 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-11-26 02:51:18,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-26 02:51:18,694 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:51:18,694 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:51:18,907 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-26 02:51:18,907 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:51:18,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:51:18,909 INFO L82 PathProgramCache]: Analyzing trace with hash 843742638, now seen corresponding path program 1 times [2019-11-26 02:51:18,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:51:18,910 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11768603] [2019-11-26 02:51:18,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/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 [2019-11-26 02:51:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:51:18,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-26 02:51:18,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:51:19,019 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:51:19,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:51:19,064 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:51:19,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:51:19,167 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11768603] [2019-11-26 02:51:19,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:51:19,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-26 02:51:19,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323844409] [2019-11-26 02:51:19,169 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-26 02:51:19,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:51:19,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-26 02:51:19,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:51:19,170 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 10 states. [2019-11-26 02:51:19,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:51:19,489 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2019-11-26 02:51:19,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:51:19,490 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2019-11-26 02:51:19,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:51:19,490 INFO L225 Difference]: With dead ends: 24 [2019-11-26 02:51:19,490 INFO L226 Difference]: Without dead ends: 17 [2019-11-26 02:51:19,491 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:51:19,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-26 02:51:19,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-26 02:51:19,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-26 02:51:19,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-11-26 02:51:19,496 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 12 [2019-11-26 02:51:19,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:51:19,496 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-11-26 02:51:19,496 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-26 02:51:19,496 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-11-26 02:51:19,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-26 02:51:19,499 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:51:19,499 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:51:19,704 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-26 02:51:19,704 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:51:19,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:51:19,704 INFO L82 PathProgramCache]: Analyzing trace with hash -2105231138, now seen corresponding path program 1 times [2019-11-26 02:51:19,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:51:19,705 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614046098] [2019-11-26 02:51:19,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/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 [2019-11-26 02:51:19,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:51:19,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-26 02:51:19,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:51:19,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:51:19,867 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:51:19,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:51:19,977 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614046098] [2019-11-26 02:51:19,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:51:19,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-26 02:51:19,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419054094] [2019-11-26 02:51:19,978 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:51:19,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:51:19,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:51:19,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:51:19,979 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 8 states. [2019-11-26 02:51:20,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:51:20,100 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-11-26 02:51:20,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:51:20,100 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2019-11-26 02:51:20,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:51:20,101 INFO L225 Difference]: With dead ends: 17 [2019-11-26 02:51:20,101 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:51:20,101 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:51:20,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:51:20,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:51:20,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:51:20,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:51:20,102 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-11-26 02:51:20,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:51:20,102 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:51:20,102 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:51:20,102 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:51:20,103 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:51:20,303 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-26 02:51:20,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:51:20,467 INFO L444 ceAbstractionStarter]: For program point L56(lines 56 59) no Hoare annotation was computed. [2019-11-26 02:51:20,468 INFO L440 ceAbstractionStarter]: At program point L44(line 44) the Hoare annotation is: (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_trunc_float_~x)) (exists ((ULTIMATE.start_trunc_float_~w~0 (_ BitVec 32))) (= (bvadd (bvashr (bvand (_ bv2139095040 32) ULTIMATE.start_trunc_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) ULTIMATE.start_trunc_float_~exponent_less_127~0)) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_trunc_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2019-11-26 02:51:20,468 INFO L440 ceAbstractionStarter]: At program point L40(lines 12 41) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_trunc_float_~x)) (exists ((ULTIMATE.start_trunc_float_~w~0 (_ BitVec 32))) (= (bvadd (bvashr (bvand (_ bv2139095040 32) ULTIMATE.start_trunc_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) ULTIMATE.start_trunc_float_~exponent_less_127~0)) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_trunc_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2019-11-26 02:51:20,468 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-26 02:51:20,468 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:51:20,468 INFO L447 ceAbstractionStarter]: At program point L61(lines 46 62) the Hoare annotation is: true [2019-11-26 02:51:20,468 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-26 02:51:20,468 INFO L444 ceAbstractionStarter]: For program point L57(line 57) no Hoare annotation was computed. [2019-11-26 02:51:20,469 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 57) no Hoare annotation was computed. [2019-11-26 02:51:20,469 INFO L444 ceAbstractionStarter]: For program point L24-1(lines 24 28) no Hoare annotation was computed. [2019-11-26 02:51:20,469 INFO L440 ceAbstractionStarter]: At program point L24-2(lines 24 28) the Hoare annotation is: false [2019-11-26 02:51:20,469 INFO L444 ceAbstractionStarter]: For program point L37(lines 37 38) no Hoare annotation was computed. [2019-11-26 02:51:20,469 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:51:20,469 INFO L444 ceAbstractionStarter]: For program point L21(lines 21 39) no Hoare annotation was computed. [2019-11-26 02:51:20,469 INFO L444 ceAbstractionStarter]: For program point L21-1(lines 21 39) no Hoare annotation was computed. [2019-11-26 02:51:20,469 INFO L444 ceAbstractionStarter]: For program point L30-1(lines 30 34) no Hoare annotation was computed. [2019-11-26 02:51:20,469 INFO L440 ceAbstractionStarter]: At program point L30-2(lines 30 34) the Hoare annotation is: false [2019-11-26 02:51:20,470 INFO L444 ceAbstractionStarter]: For program point L22(lines 22 35) no Hoare annotation was computed. [2019-11-26 02:51:20,470 INFO L444 ceAbstractionStarter]: For program point L14-1(lines 14 18) no Hoare annotation was computed. [2019-11-26 02:51:20,470 INFO L440 ceAbstractionStarter]: At program point L14-2(lines 14 18) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_trunc_float_~x)) [2019-11-26 02:51:20,470 INFO L444 ceAbstractionStarter]: For program point L14-3(lines 14 18) no Hoare annotation was computed. [2019-11-26 02:51:20,475 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:51:20,476 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-11-26 02:51:20,476 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:51:20,481 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:51:20,481 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-11-26 02:51:20,481 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:51:20,482 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:51:20,482 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:51:20,483 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:51:20,483 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-11-26 02:51:20,485 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:51:20,486 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:51:20,486 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-11-26 02:51:20,487 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:51:20,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:51:20 BoogieIcfgContainer [2019-11-26 02:51:20,489 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:51:20,489 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:51:20,489 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:51:20,490 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:51:20,490 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:51:17" (3/4) ... [2019-11-26 02:51:20,493 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:51:20,504 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-11-26 02:51:20,504 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-26 02:51:20,505 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:51:20,530 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2019-11-26 02:51:20,531 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127)) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2019-11-26 02:51:20,532 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x)) && (\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127)) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2019-11-26 02:51:20,551 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_dacf47b2-732f-4363-a0c9-558ac714ef20/bin/utaipan/witness.graphml [2019-11-26 02:51:20,551 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:51:20,553 INFO L168 Benchmark]: Toolchain (without parser) took 3470.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 188.2 MB). Free memory was 961.8 MB in the beginning and 1.0 GB in the end (delta: -63.1 MB). Peak memory consumption was 125.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:51:20,554 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:51:20,554 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.01 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 951.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:51:20,555 INFO L168 Benchmark]: Boogie Procedure Inliner took 142.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 188.2 MB). Free memory was 951.1 MB in the beginning and 1.2 GB in the end (delta: -227.0 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:51:20,555 INFO L168 Benchmark]: Boogie Preprocessor took 56.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:51:20,556 INFO L168 Benchmark]: RCFGBuilder took 349.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:51:20,556 INFO L168 Benchmark]: TraceAbstraction took 2555.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.0 GB in the end (delta: 121.5 MB). Peak memory consumption was 121.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:51:20,557 INFO L168 Benchmark]: Witness Printer took 62.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:51:20,559 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 298.01 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 951.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 142.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 188.2 MB). Free memory was 951.1 MB in the beginning and 1.2 GB in the end (delta: -227.0 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 56.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 349.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2555.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.0 GB in the end (delta: 121.5 MB). Peak memory consumption was 121.5 MB. Max. memory is 11.5 GB. * Witness Printer took 62.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 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[ULTIMATE.start_trunc_float_~w~0,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[ULTIMATE.start_trunc_float_~w~0,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[ULTIMATE.start_trunc_float_~w~0,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[ULTIMATE.start_trunc_float_~w~0,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: 57]: 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: 24]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 44]: Loop Invariant [2019-11-26 02:51:20,567 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:51:20,568 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-11-26 02:51:20,568 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:51:20,568 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:51:20,569 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-11-26 02:51:20,569 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x)) && (\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127)) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 14]: Loop Invariant [2019-11-26 02:51:20,570 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:51:20,570 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 12]: Loop Invariant [2019-11-26 02:51:20,571 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:51:20,571 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-11-26 02:51:20,571 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:51:20,572 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-26 02:51:20,572 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-11-26 02:51:20,572 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127)) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Result: SAFE, OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 54 SDtfs, 36 SDslu, 88 SDs, 0 SdLazy, 46 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 63 HoareAnnotationTreeSize, 6 FomulaSimplifications, 32 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 86 ConstructedInterpolants, 14 QuantifiedInterpolants, 3279 SizeOfPredicates, 21 NumberOfNonLiveVariables, 130 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...