./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 29db272de411ec8ad8f5c2bb2f7576cb66abdc0d ......................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 29db272de411ec8ad8f5c2bb2f7576cb66abdc0d ...................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:35:55,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:35:55,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:35:55,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:35:55,833 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:35:55,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:35:55,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:35:55,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:35:55,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:35:55,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:35:55,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:35:55,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:35:55,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:35:55,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:35:55,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:35:55,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:35:55,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:35:55,871 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:35:55,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:35:55,890 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:35:55,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:35:55,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:35:55,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:35:55,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:35:55,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:35:55,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:35:55,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:35:55,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:35:55,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:35:55,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:35:55,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:35:55,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:35:55,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:35:55,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:35:55,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:35:55,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:35:55,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:35:55,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:35:55,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:35:55,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:35:55,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:35:55,929 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 01:35:55,959 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:35:55,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:35:55,960 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:35:55,961 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:35:55,961 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:35:55,961 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:35:55,961 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 01:35:55,962 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:35:55,962 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:35:55,962 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 01:35:55,962 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 01:35:55,963 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:35:55,963 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 01:35:55,963 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 01:35:55,964 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 01:35:55,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:35:55,965 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:35:55,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:35:55,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:35:55,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:35:55,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:35:55,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:35:55,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:35:55,967 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:35:55,967 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:35:55,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:35:55,967 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:35:55,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:35:55,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:35:55,968 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:35:55,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:35:55,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:35:55,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:35:55,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:35:55,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:35:55,970 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 01:35:55,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:35:55,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:35:55,970 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:35:55,971 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:35:55,971 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29db272de411ec8ad8f5c2bb2f7576cb66abdc0d [2020-11-30 01:35:56,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:35:56,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:35:56,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:35:56,294 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:35:56,295 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:35:56,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2020-11-30 01:35:56,378 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan/data/d23c3db65/e59b5080001d4434b0ef2cfc9fabd197/FLAG76d1657cd [2020-11-30 01:35:56,976 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:35:56,977 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2020-11-30 01:35:56,985 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan/data/d23c3db65/e59b5080001d4434b0ef2cfc9fabd197/FLAG76d1657cd [2020-11-30 01:35:57,332 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan/data/d23c3db65/e59b5080001d4434b0ef2cfc9fabd197 [2020-11-30 01:35:57,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:35:57,336 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:35:57,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:35:57,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:35:57,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:35:57,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:35:57" (1/1) ... [2020-11-30 01:35:57,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ad79dc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:35:57, skipping insertion in model container [2020-11-30 01:35:57,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:35:57" (1/1) ... [2020-11-30 01:35:57,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:35:57,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:35:57,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:35:57,623 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:35:57,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:35:57,664 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:35:57,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:35:57 WrapperNode [2020-11-30 01:35:57,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:35:57,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:35:57,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:35:57,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:35:57,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:35:57" (1/1) ... [2020-11-30 01:35:57,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:35:57" (1/1) ... [2020-11-30 01:35:57,712 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:35:57,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:35:57,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:35:57,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:35:57,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:35:57" (1/1) ... [2020-11-30 01:35:57,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:35:57" (1/1) ... [2020-11-30 01:35:57,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:35:57" (1/1) ... [2020-11-30 01:35:57,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:35:57" (1/1) ... [2020-11-30 01:35:57,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:35:57" (1/1) ... [2020-11-30 01:35:57,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:35:57" (1/1) ... [2020-11-30 01:35:57,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:35:57" (1/1) ... [2020-11-30 01:35:57,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:35:57,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:35:57,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:35:57,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:35:57,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:35:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:35:57,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:35:57,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:35:57,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-30 01:35:57,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 01:35:57,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 01:35:57,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:35:57,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:35:57,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 01:35:57,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:35:58,668 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:35:58,669 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-30 01:35:58,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:35:58 BoogieIcfgContainer [2020-11-30 01:35:58,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:35:58,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:35:58,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:35:58,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:35:58,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:35:57" (1/3) ... [2020-11-30 01:35:58,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a5dbf2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:35:58, skipping insertion in model container [2020-11-30 01:35:58,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:35:57" (2/3) ... [2020-11-30 01:35:58,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a5dbf2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:35:58, skipping insertion in model container [2020-11-30 01:35:58,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:35:58" (3/3) ... [2020-11-30 01:35:58,681 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1091.c [2020-11-30 01:35:58,695 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:35:58,700 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:35:58,715 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:35:58,743 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:35:58,744 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:35:58,744 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:35:58,744 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:35:58,744 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:35:58,745 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:35:58,745 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:35:58,745 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:35:58,757 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-30 01:35:58,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 01:35:58,763 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:35:58,764 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:35:58,764 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:35:58,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:35:58,771 INFO L82 PathProgramCache]: Analyzing trace with hash 545568920, now seen corresponding path program 1 times [2020-11-30 01:35:58,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:35:58,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128534175] [2020-11-30 01:35:58,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:35:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:35:58,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:35:58,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128534175] [2020-11-30 01:35:58,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:35:58,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:35:58,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569925998] [2020-11-30 01:35:58,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:35:58,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:35:58,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:35:58,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:35:58,939 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-11-30 01:35:58,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:35:58,956 INFO L93 Difference]: Finished difference Result 31 states and 45 transitions. [2020-11-30 01:35:58,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:35:58,958 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-30 01:35:58,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:35:58,967 INFO L225 Difference]: With dead ends: 31 [2020-11-30 01:35:58,968 INFO L226 Difference]: Without dead ends: 14 [2020-11-30 01:35:58,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:35:58,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-30 01:35:59,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-30 01:35:59,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-30 01:35:59,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-11-30 01:35:59,008 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2020-11-30 01:35:59,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:35:59,008 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-11-30 01:35:59,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:35:59,009 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-11-30 01:35:59,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 01:35:59,009 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:35:59,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:35:59,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:35:59,010 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:35:59,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:35:59,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1884192261, now seen corresponding path program 1 times [2020-11-30 01:35:59,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:35:59,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418788540] [2020-11-30 01:35:59,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:35:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:35:59,167 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:35:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:35:59,259 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:35:59,304 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 01:35:59,304 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:35:59,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:35:59,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:35:59 BoogieIcfgContainer [2020-11-30 01:35:59,346 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:35:59,346 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:35:59,347 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:35:59,347 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:35:59,348 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:35:58" (3/4) ... [2020-11-30 01:35:59,351 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:35:59,353 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:35:59,357 INFO L168 Benchmark]: Toolchain (without parser) took 2018.00 ms. Allocated memory is still 107.0 MB. Free memory was 80.2 MB in the beginning and 59.6 MB in the end (delta: 20.6 MB). Peak memory consumption was 19.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:35:59,359 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 79.7 MB. Free memory is still 41.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:35:59,360 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.11 ms. Allocated memory is still 107.0 MB. Free memory was 79.9 MB in the beginning and 83.3 MB in the end (delta: -3.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:35:59,362 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.13 ms. Allocated memory is still 107.0 MB. Free memory was 83.3 MB in the beginning and 81.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:35:59,363 INFO L168 Benchmark]: Boogie Preprocessor took 35.38 ms. Allocated memory is still 107.0 MB. Free memory was 81.8 MB in the beginning and 80.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:35:59,364 INFO L168 Benchmark]: RCFGBuilder took 921.60 ms. Allocated memory is still 107.0 MB. Free memory was 80.3 MB in the beginning and 83.1 MB in the end (delta: -2.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-30 01:35:59,365 INFO L168 Benchmark]: TraceAbstraction took 673.13 ms. Allocated memory is still 107.0 MB. Free memory was 82.6 MB in the beginning and 60.0 MB in the end (delta: 22.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:35:59,367 INFO L168 Benchmark]: Witness Printer took 6.46 ms. Allocated memory is still 107.0 MB. Free memory is still 59.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:35:59,377 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 79.7 MB. Free memory is still 41.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 327.11 ms. Allocated memory is still 107.0 MB. Free memory was 79.9 MB in the beginning and 83.3 MB in the end (delta: -3.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.13 ms. Allocated memory is still 107.0 MB. Free memory was 83.3 MB in the beginning and 81.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.38 ms. Allocated memory is still 107.0 MB. Free memory was 81.8 MB in the beginning and 80.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 921.60 ms. Allocated memory is still 107.0 MB. Free memory was 80.3 MB in the beginning and 83.1 MB in the end (delta: -2.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 673.13 ms. Allocated memory is still 107.0 MB. Free memory was 82.6 MB in the beginning and 60.0 MB in the end (delta: 22.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 6.46 ms. Allocated memory is still 107.0 MB. Free memory is still 59.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 59, overapproximation of someBinaryArithmeticFLOAToperation at line 46, overapproximation of bitwiseAnd at line 23. Possible FailurePath: [L13] static const float huge_ceil = 1.0e30; [L68] float x = 0.0f / 0.0f; [L16] __int32_t i0, j0; [L17] __uint32_t i, ix; VAL [huge_ceil=1000000000000000000000000000000] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] ix = (i0 & 0x7fffffff) [L24] j0 = (ix >> 23) - 0x7f VAL [huge_ceil=1000000000000000000000000000000] [L25] COND FALSE !(j0 < 23) [L45] COND FALSE !(!((ix) < 0x7f800000L)) [L48] return x; VAL [huge_ceil=1000000000000000000000000000000] [L70] float res = ceil_float(x); [L59] return x != x; [L73] COND TRUE !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1091.c", 3, "reach_error") VAL [huge_ceil=1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 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=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:36:02,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:36:02,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:36:02,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:36:02,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:36:02,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:36:02,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:36:02,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:36:02,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:36:02,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:36:02,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:36:02,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:36:02,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:36:02,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:36:02,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:36:02,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:36:02,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:36:02,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:36:02,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:36:02,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:36:02,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:36:02,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:36:02,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:36:02,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:36:02,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:36:02,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:36:02,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:36:02,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:36:02,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:36:02,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:36:02,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:36:02,518 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:36:02,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:36:02,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:36:02,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:36:02,535 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:36:02,536 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:36:02,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:36:02,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:36:02,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:36:02,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:36:02,542 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-30 01:36:02,601 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:36:02,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:36:02,603 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:36:02,603 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:36:02,603 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:36:02,604 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:36:02,604 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:36:02,605 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:36:02,605 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:36:02,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:36:02,608 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:36:02,609 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:36:02,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:36:02,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:36:02,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:36:02,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:36:02,610 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:36:02,611 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 01:36:02,611 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 01:36:02,611 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:36:02,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:36:02,612 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:36:02,612 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:36:02,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:36:02,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:36:02,613 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:36:02,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:36:02,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:36:02,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:36:02,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:36:02,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:36:02,615 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 01:36:02,616 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 01:36:02,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:36:02,616 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:36:02,617 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:36:02,617 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29db272de411ec8ad8f5c2bb2f7576cb66abdc0d [2020-11-30 01:36:03,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:36:03,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:36:03,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:36:03,221 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:36:03,222 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:36:03,223 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2020-11-30 01:36:03,311 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan/data/4d9767f83/da837f7ffad84692abc6df8489bc4802/FLAG51a4d00ca [2020-11-30 01:36:03,958 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:36:03,958 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2020-11-30 01:36:03,967 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan/data/4d9767f83/da837f7ffad84692abc6df8489bc4802/FLAG51a4d00ca [2020-11-30 01:36:04,341 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan/data/4d9767f83/da837f7ffad84692abc6df8489bc4802 [2020-11-30 01:36:04,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:36:04,347 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:36:04,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:36:04,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:36:04,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:36:04,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:36:04" (1/1) ... [2020-11-30 01:36:04,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cf5bd60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:36:04, skipping insertion in model container [2020-11-30 01:36:04,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:36:04" (1/1) ... [2020-11-30 01:36:04,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:36:04,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:36:04,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:36:04,692 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:36:04,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:36:04,794 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:36:04,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:36:04 WrapperNode [2020-11-30 01:36:04,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:36:04,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:36:04,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:36:04,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:36:04,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:36:04" (1/1) ... [2020-11-30 01:36:04,817 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:36:04" (1/1) ... [2020-11-30 01:36:04,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:36:04,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:36:04,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:36:04,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:36:04,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:36:04" (1/1) ... [2020-11-30 01:36:04,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:36:04" (1/1) ... [2020-11-30 01:36:04,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:36:04" (1/1) ... [2020-11-30 01:36:04,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:36:04" (1/1) ... [2020-11-30 01:36:04,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:36:04" (1/1) ... [2020-11-30 01:36:04,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:36:04" (1/1) ... [2020-11-30 01:36:04,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:36:04" (1/1) ... [2020-11-30 01:36:04,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:36:04,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:36:04,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:36:04,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:36:04,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:36:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:36:04,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 01:36:04,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:36:04,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-30 01:36:04,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 01:36:04,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:36:04,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:36:04,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-30 01:36:04,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-30 01:36:04,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:36:05,995 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:36:05,995 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-30 01:36:05,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:36:05 BoogieIcfgContainer [2020-11-30 01:36:05,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:36:06,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:36:06,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:36:06,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:36:06,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:36:04" (1/3) ... [2020-11-30 01:36:06,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39090e55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:36:06, skipping insertion in model container [2020-11-30 01:36:06,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:36:04" (2/3) ... [2020-11-30 01:36:06,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39090e55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:36:06, skipping insertion in model container [2020-11-30 01:36:06,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:36:05" (3/3) ... [2020-11-30 01:36:06,008 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1091.c [2020-11-30 01:36:06,023 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:36:06,028 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:36:06,043 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:36:06,072 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:36:06,072 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:36:06,073 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:36:06,073 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:36:06,073 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:36:06,073 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:36:06,074 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:36:06,074 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:36:06,090 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-11-30 01:36:06,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 01:36:06,096 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:36:06,097 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:36:06,098 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:36:06,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:36:06,105 INFO L82 PathProgramCache]: Analyzing trace with hash -2022266355, now seen corresponding path program 1 times [2020-11-30 01:36:06,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:36:06,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709092650] [2020-11-30 01:36:06,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-30 01:36:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:36:06,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 01:36:06,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:36:06,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:36:06,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:36:06,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:36:06,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709092650] [2020-11-30 01:36:06,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:36:06,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 01:36:06,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711512909] [2020-11-30 01:36:06,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:36:06,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:36:06,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:36:06,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:36:06,334 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-11-30 01:36:06,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:36:06,358 INFO L93 Difference]: Finished difference Result 51 states and 77 transitions. [2020-11-30 01:36:06,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:36:06,360 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 01:36:06,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:36:06,378 INFO L225 Difference]: With dead ends: 51 [2020-11-30 01:36:06,378 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 01:36:06,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:36:06,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 01:36:06,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-30 01:36:06,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 01:36:06,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2020-11-30 01:36:06,431 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 10 [2020-11-30 01:36:06,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:36:06,432 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2020-11-30 01:36:06,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:36:06,432 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2020-11-30 01:36:06,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 01:36:06,434 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:36:06,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:36:06,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 01:36:06,657 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:36:06,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:36:06,659 INFO L82 PathProgramCache]: Analyzing trace with hash -62606256, now seen corresponding path program 1 times [2020-11-30 01:36:06,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:36:06,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101078795] [2020-11-30 01:36:06,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 01:36:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:36:06,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 01:36:06,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:36:07,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:36:07,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:36:07,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:36:07,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101078795] [2020-11-30 01:36:07,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:36:07,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-30 01:36:07,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343979523] [2020-11-30 01:36:07,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 01:36:07,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:36:07,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 01:36:07,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:36:07,152 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand 10 states. [2020-11-30 01:36:07,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:36:07,807 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2020-11-30 01:36:07,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:36:07,808 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2020-11-30 01:36:07,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:36:07,808 INFO L225 Difference]: With dead ends: 34 [2020-11-30 01:36:07,809 INFO L226 Difference]: Without dead ends: 18 [2020-11-30 01:36:07,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-30 01:36:07,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-30 01:36:07,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-30 01:36:07,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-30 01:36:07,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-11-30 01:36:07,814 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2020-11-30 01:36:07,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:36:07,814 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-11-30 01:36:07,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 01:36:07,814 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-11-30 01:36:07,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 01:36:07,817 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:36:07,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:36:08,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 01:36:08,018 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:36:08,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:36:08,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1612289523, now seen corresponding path program 1 times [2020-11-30 01:36:08,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:36:08,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572826401] [2020-11-30 01:36:08,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-30 01:36:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:36:08,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 01:36:08,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:36:08,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:36:08,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:36:08,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:36:08,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572826401] [2020-11-30 01:36:08,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:36:08,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-30 01:36:08,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658033648] [2020-11-30 01:36:08,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 01:36:08,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:36:08,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 01:36:08,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:36:08,556 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 8 states. [2020-11-30 01:36:08,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:36:08,688 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-11-30 01:36:08,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:36:08,689 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-11-30 01:36:08,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:36:08,689 INFO L225 Difference]: With dead ends: 18 [2020-11-30 01:36:08,689 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 01:36:08,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:36:08,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 01:36:08,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 01:36:08,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 01:36:08,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 01:36:08,691 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-30 01:36:08,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:36:08,691 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:36:08,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 01:36:08,691 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:36:08,691 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 01:36:08,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 01:36:08,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 01:36:09,030 INFO L274 CegarLoopResult]: For program point L27(lines 27 33) no Hoare annotation was computed. [2020-11-30 01:36:09,030 INFO L274 CegarLoopResult]: For program point L73(lines 73 76) no Hoare annotation was computed. [2020-11-30 01:36:09,030 INFO L274 CegarLoopResult]: For program point L36(lines 36 37) no Hoare annotation was computed. [2020-11-30 01:36:09,030 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-30 01:36:09,030 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-30 01:36:09,031 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 01:36:09,031 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 01:36:09,031 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 01:36:09,031 INFO L274 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-11-30 01:36:09,031 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 01:36:09,031 INFO L277 CegarLoopResult]: At program point L78(lines 61 79) the Hoare annotation is: true [2020-11-30 01:36:09,032 INFO L274 CegarLoopResult]: For program point L45(lines 45 48) no Hoare annotation was computed. [2020-11-30 01:36:09,032 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 01:36:09,032 INFO L274 CegarLoopResult]: For program point L25(lines 25 49) no Hoare annotation was computed. [2020-11-30 01:36:09,032 INFO L274 CegarLoopResult]: For program point L50(lines 50 54) no Hoare annotation was computed. [2020-11-30 01:36:09,032 INFO L274 CegarLoopResult]: For program point L50-1(lines 15 56) no Hoare annotation was computed. [2020-11-30 01:36:09,032 INFO L274 CegarLoopResult]: For program point L50-2(lines 50 54) no Hoare annotation was computed. [2020-11-30 01:36:09,032 INFO L274 CegarLoopResult]: For program point L38(lines 38 42) no Hoare annotation was computed. [2020-11-30 01:36:09,033 INFO L274 CegarLoopResult]: For program point L30(lines 30 32) no Hoare annotation was computed. [2020-11-30 01:36:09,033 INFO L270 CegarLoopResult]: At program point L59(line 59) the Hoare annotation is: (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq |ULTIMATE.start_ceil_float_#res| |ULTIMATE.start_ceil_float_#res|)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_ceil_float_~x))) [2020-11-30 01:36:09,033 INFO L274 CegarLoopResult]: For program point L26(lines 26 43) no Hoare annotation was computed. [2020-11-30 01:36:09,034 INFO L270 CegarLoopResult]: At program point L55(lines 15 56) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_ceil_float_#res| |ULTIMATE.start_ceil_float_#res|)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_ceil_float_~x))) [2020-11-30 01:36:09,034 INFO L274 CegarLoopResult]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2020-11-30 01:36:09,034 INFO L270 CegarLoopResult]: At program point L18-2(lines 18 22) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_ceil_float_~x)) [2020-11-30 01:36:09,034 INFO L274 CegarLoopResult]: For program point L18-3(lines 18 22) no Hoare annotation was computed. [2020-11-30 01:36:09,035 INFO L274 CegarLoopResult]: For program point L39(lines 39 40) no Hoare annotation was computed. [2020-11-30 01:36:09,035 INFO L274 CegarLoopResult]: For program point L39-2(lines 39 40) no Hoare annotation was computed. [2020-11-30 01:36:09,043 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 01:36:09,051 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 01:36:09,062 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 01:36:09,063 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 01:36:09,066 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 01:36:09,069 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 01:36:09,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:36:09 BoogieIcfgContainer [2020-11-30 01:36:09,074 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:36:09,075 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:36:09,075 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:36:09,076 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:36:09,076 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:36:05" (3/4) ... [2020-11-30 01:36:09,079 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 01:36:09,096 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-30 01:36:09,096 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-30 01:36:09,096 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:36:09,097 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:36:09,129 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-11-30 01:36:09,130 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~FLOAT(\result, \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-11-30 01:36:09,132 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (1bv32 == \result && !~fp.eq~FLOAT(\result, \result)) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-11-30 01:36:09,184 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a18ebee0-cb74-43d7-baae-3a3d5ec94914/bin/utaipan/witness.graphml [2020-11-30 01:36:09,184 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:36:09,188 INFO L168 Benchmark]: Toolchain (without parser) took 4838.17 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 35.2 MB in the beginning and 29.0 MB in the end (delta: 6.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2020-11-30 01:36:09,189 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 56.6 MB. Free memory is still 38.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:36:09,190 INFO L168 Benchmark]: CACSL2BoogieTranslator took 444.52 ms. Allocated memory is still 56.6 MB. Free memory was 35.0 MB in the beginning and 38.8 MB in the end (delta: -3.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:36:09,190 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.69 ms. Allocated memory is still 56.6 MB. Free memory was 38.5 MB in the beginning and 36.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:36:09,193 INFO L168 Benchmark]: Boogie Preprocessor took 40.37 ms. Allocated memory is still 56.6 MB. Free memory was 36.9 MB in the beginning and 35.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:36:09,194 INFO L168 Benchmark]: RCFGBuilder took 1112.98 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 35.4 MB in the beginning and 46.2 MB in the end (delta: -10.9 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:36:09,195 INFO L168 Benchmark]: TraceAbstraction took 3075.04 ms. Allocated memory is still 69.2 MB. Free memory was 46.0 MB in the beginning and 32.2 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-11-30 01:36:09,196 INFO L168 Benchmark]: Witness Printer took 108.98 ms. Allocated memory is still 69.2 MB. Free memory was 32.2 MB in the beginning and 29.0 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:36:09,198 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 56.6 MB. Free memory is still 38.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 444.52 ms. Allocated memory is still 56.6 MB. Free memory was 35.0 MB in the beginning and 38.8 MB in the end (delta: -3.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.69 ms. Allocated memory is still 56.6 MB. Free memory was 38.5 MB in the beginning and 36.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.37 ms. Allocated memory is still 56.6 MB. Free memory was 36.9 MB in the beginning and 35.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1112.98 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 35.4 MB in the beginning and 46.2 MB in the end (delta: -10.9 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3075.04 ms. Allocated memory is still 69.2 MB. Free memory was 46.0 MB in the beginning and 32.2 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Witness Printer took 108.98 ms. Allocated memory is still 69.2 MB. Free memory was 32.2 MB in the beginning and 29.0 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant [2020-11-30 01:36:09,211 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 01:36:09,212 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: 59]: Loop Invariant [2020-11-30 01:36:09,213 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 01:36:09,214 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (1bv32 == \result && !~fp.eq~FLOAT(\result, \result)) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 15]: Loop Invariant [2020-11-30 01:36:09,216 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 01:36:09,217 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: !~fp.eq~FLOAT(\result, \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 18 SDslu, 65 SDs, 0 SdLazy, 46 SolverSat, 4 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 35 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 11 QuantifiedInterpolants, 2710 SizeOfPredicates, 19 NumberOfNonLiveVariables, 146 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...