./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0920a.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_bce44ab3-a68b-4966-a354-59caa3d3148a/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0920a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/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 77b3a373bd5532f9284ea33fd7b532cf320a99fa ....................................................................................................................................................................................................................................................................................................................................................................... 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_bce44ab3-a68b-4966-a354-59caa3d3148a/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0920a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/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 77b3a373bd5532f9284ea33fd7b532cf320a99fa ..................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:04:35,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:04:35,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:04:35,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:04:35,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:04:35,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:04:35,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:04:35,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:04:35,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:04:35,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:04:35,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:04:35,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:04:35,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:04:35,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:04:35,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:04:35,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:04:35,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:04:35,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:04:35,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:04:35,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:04:35,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:04:35,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:04:35,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:04:35,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:04:35,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:04:35,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:04:35,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:04:36,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:04:36,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:04:36,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:04:36,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:04:36,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:04:36,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:04:36,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:04:36,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:04:36,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:04:36,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:04:36,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:04:36,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:04:36,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:04:36,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:04:36,016 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:04:36,057 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:04:36,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:04:36,060 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:04:36,060 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:04:36,060 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:04:36,060 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:04:36,061 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:04:36,061 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:04:36,061 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:04:36,061 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:04:36,061 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:04:36,062 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:04:36,062 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:04:36,062 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:04:36,062 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:04:36,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:04:36,063 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:04:36,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:04:36,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:04:36,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:04:36,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:04:36,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:04:36,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:04:36,064 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:04:36,065 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:04:36,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:04:36,065 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:04:36,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:04:36,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:04:36,066 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:04:36,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:04:36,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:04:36,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:04:36,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:04:36,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:04:36,067 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:04:36,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:04:36,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:04:36,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:04:36,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:04:36,068 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_bce44ab3-a68b-4966-a354-59caa3d3148a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77b3a373bd5532f9284ea33fd7b532cf320a99fa [2020-11-22 13:04:36,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:04:36,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:04:36,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:04:36,392 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:04:36,393 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:04:36,394 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0920a.c [2020-11-22 13:04:36,467 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/bin/utaipan/data/e9839927d/12c8895aefaf45d2a555f75131121cc1/FLAG43eab4d65 [2020-11-22 13:04:36,956 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:04:36,957 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/sv-benchmarks/c/float-newlib/double_req_bl_0920a.c [2020-11-22 13:04:36,970 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/bin/utaipan/data/e9839927d/12c8895aefaf45d2a555f75131121cc1/FLAG43eab4d65 [2020-11-22 13:04:37,296 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/bin/utaipan/data/e9839927d/12c8895aefaf45d2a555f75131121cc1 [2020-11-22 13:04:37,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:04:37,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:04:37,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:04:37,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:04:37,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:04:37,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:04:37" (1/1) ... [2020-11-22 13:04:37,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@476ec9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:37, skipping insertion in model container [2020-11-22 13:04:37,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:04:37" (1/1) ... [2020-11-22 13:04:37,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:04:37,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:04:37,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:04:37,663 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:04:37,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:04:37,717 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:04:37,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:37 WrapperNode [2020-11-22 13:04:37,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:04:37,719 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:04:37,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:04:37,719 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:04:37,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:37" (1/1) ... [2020-11-22 13:04:37,736 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:37" (1/1) ... [2020-11-22 13:04:37,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:04:37,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:04:37,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:04:37,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:04:37,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:37" (1/1) ... [2020-11-22 13:04:37,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:37" (1/1) ... [2020-11-22 13:04:37,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:37" (1/1) ... [2020-11-22 13:04:37,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:37" (1/1) ... [2020-11-22 13:04:37,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:37" (1/1) ... [2020-11-22 13:04:37,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:37" (1/1) ... [2020-11-22 13:04:37,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:37" (1/1) ... [2020-11-22 13:04:37,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:04:37,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:04:37,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:04:37,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:04:37,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/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 [2020-11-22 13:04:37,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:04:37,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:04:37,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-22 13:04:37,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 13:04:37,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-22 13:04:37,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:04:37,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:04:37,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 13:04:37,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:04:38,546 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:04:38,546 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-22 13:04:38,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:04:38 BoogieIcfgContainer [2020-11-22 13:04:38,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:04:38,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:04:38,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:04:38,553 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:04:38,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:04:37" (1/3) ... [2020-11-22 13:04:38,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f7bea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:04:38, skipping insertion in model container [2020-11-22 13:04:38,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:37" (2/3) ... [2020-11-22 13:04:38,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f7bea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:04:38, skipping insertion in model container [2020-11-22 13:04:38,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:04:38" (3/3) ... [2020-11-22 13:04:38,557 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0920a.c [2020-11-22 13:04:38,567 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:04:38,571 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:04:38,583 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:04:38,607 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:04:38,607 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:04:38,607 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:04:38,607 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:04:38,608 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:04:38,608 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:04:38,608 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:04:38,608 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:04:38,620 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-11-22 13:04:38,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 13:04:38,624 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:04:38,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:04:38,625 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:04:38,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:04:38,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1471131737, now seen corresponding path program 1 times [2020-11-22 13:04:38,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:04:38,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058295505] [2020-11-22 13:04:38,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:04:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:04:38,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:04:38,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058295505] [2020-11-22 13:04:38,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:04:38,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:04:38,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712871780] [2020-11-22 13:04:38,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:04:38,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:04:38,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:04:38,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:04:38,789 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-11-22 13:04:38,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:04:38,806 INFO L93 Difference]: Finished difference Result 48 states and 75 transitions. [2020-11-22 13:04:38,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:04:38,807 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-22 13:04:38,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:04:38,816 INFO L225 Difference]: With dead ends: 48 [2020-11-22 13:04:38,816 INFO L226 Difference]: Without dead ends: 22 [2020-11-22 13:04:38,819 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 [2020-11-22 13:04:38,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-22 13:04:38,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-22 13:04:38,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-22 13:04:38,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-11-22 13:04:38,847 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 10 [2020-11-22 13:04:38,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:04:38,848 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-11-22 13:04:38,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:04:38,848 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-11-22 13:04:38,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 13:04:38,849 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:04:38,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:04:38,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:04:38,849 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:04:38,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:04:38,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1875689576, now seen corresponding path program 1 times [2020-11-22 13:04:38,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:04:38,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190350583] [2020-11-22 13:04:38,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:04:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:04:38,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:04:38,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190350583] [2020-11-22 13:04:38,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:04:38,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:04:38,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928701974] [2020-11-22 13:04:38,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:04:38,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:04:38,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:04:38,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:04:38,943 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 3 states. [2020-11-22 13:04:38,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:04:38,979 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2020-11-22 13:04:38,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:04:38,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-22 13:04:38,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:04:38,984 INFO L225 Difference]: With dead ends: 39 [2020-11-22 13:04:38,984 INFO L226 Difference]: Without dead ends: 22 [2020-11-22 13:04:38,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:04:38,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-22 13:04:38,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-22 13:04:38,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-22 13:04:38,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-11-22 13:04:38,988 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 11 [2020-11-22 13:04:38,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:04:38,989 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-11-22 13:04:38,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:04:38,989 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-11-22 13:04:38,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 13:04:38,990 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:04:38,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:04:38,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:04:38,990 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:04:38,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:04:38,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1001396496, now seen corresponding path program 1 times [2020-11-22 13:04:38,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:04:38,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714108198] [2020-11-22 13:04:38,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:04:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:04:39,155 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:04:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:04:39,200 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:04:39,229 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 13:04:39,229 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:04:39,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 13:04:39,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:04:39 BoogieIcfgContainer [2020-11-22 13:04:39,269 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:04:39,270 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:04:39,270 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:04:39,270 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:04:39,271 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:04:38" (3/4) ... [2020-11-22 13:04:39,274 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 13:04:39,274 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:04:39,276 INFO L168 Benchmark]: Toolchain (without parser) took 1974.88 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 60.0 MB in the beginning and 90.2 MB in the end (delta: -30.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:04:39,277 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 96.5 MB. Free memory is still 76.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:04:39,278 INFO L168 Benchmark]: CACSL2BoogieTranslator took 415.98 ms. Allocated memory is still 96.5 MB. Free memory was 59.8 MB in the beginning and 70.4 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:04:39,278 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.63 ms. Allocated memory is still 96.5 MB. Free memory was 70.4 MB in the beginning and 68.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:04:39,279 INFO L168 Benchmark]: Boogie Preprocessor took 49.30 ms. Allocated memory is still 96.5 MB. Free memory was 68.3 MB in the beginning and 66.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:04:39,280 INFO L168 Benchmark]: RCFGBuilder took 732.13 ms. Allocated memory is still 96.5 MB. Free memory was 66.6 MB in the beginning and 65.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 33.9 MB. Max. memory is 16.1 GB. [2020-11-22 13:04:39,287 INFO L168 Benchmark]: TraceAbstraction took 719.35 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 65.1 MB in the beginning and 90.8 MB in the end (delta: -25.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:04:39,288 INFO L168 Benchmark]: Witness Printer took 4.57 ms. Allocated memory is still 121.6 MB. Free memory is still 90.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:04:39,292 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 96.5 MB. Free memory is still 76.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 415.98 ms. Allocated memory is still 96.5 MB. Free memory was 59.8 MB in the beginning and 70.4 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.63 ms. Allocated memory is still 96.5 MB. Free memory was 70.4 MB in the beginning and 68.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.30 ms. Allocated memory is still 96.5 MB. Free memory was 68.3 MB in the beginning and 66.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 732.13 ms. Allocated memory is still 96.5 MB. Free memory was 66.6 MB in the beginning and 65.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 33.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 719.35 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 65.1 MB in the beginning and 90.8 MB in the end (delta: -25.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.57 ms. Allocated memory is still 121.6 MB. Free memory is still 90.2 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 someBinaryDOUBLEComparisonOperation at line 139, overapproximation of bitwiseAnd at line 135, overapproximation of someBinaryArithmeticDOUBLEoperation at line 74. Possible FailurePath: [L34-L43] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L45] static const double zero = 0.0; [L148] double x = __VERIFIER_nondet_double(); [L150] EXPR x < 0 && isfinite_double(x) [L129] __int32_t hx; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L131] ieee_double_shape_type gh_u; [L132] gh_u.value = (x) [L133] EXPR gh_u.parts.msw [L133] (hx) = gh_u.parts.msw [L135] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L150] EXPR x < 0 && isfinite_double(x) VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L150] COND TRUE (x < 0 && isfinite_double(x)) [L48] double hfsq, f, s, z, R, w, t1, t2, dk; [L49] __int32_t k, hx, i, j; [L50] __uint32_t lx; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L53] ieee_double_shape_type ew_u; [L54] ew_u.value = (x) [L55] EXPR ew_u.parts.msw [L55] (hx) = ew_u.parts.msw [L56] EXPR ew_u.parts.lsw [L56] (lx) = ew_u.parts.lsw [L59] k = 0 VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L60] COND FALSE !(hx < 0x00100000) VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L73] COND TRUE hx >= 0x7ff00000 [L74] return x + x; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L152] double res = __ieee754_log(x); [L139] return x != x; [L155] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_0920a.c", 3, "reach_error") VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 0 SDslu, 21 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 191 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 [2020-11-22 13:04:41,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:04:41,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:04:41,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:04:41,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:04:41,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:04:41,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:04:41,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:04:41,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:04:41,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:04:41,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:04:41,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:04:41,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:04:41,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:04:41,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:04:41,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:04:41,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:04:41,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:04:41,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:04:41,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:04:41,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:04:41,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:04:41,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:04:41,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:04:42,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:04:42,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:04:42,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:04:42,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:04:42,011 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:04:42,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:04:42,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:04:42,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:04:42,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:04:42,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:04:42,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:04:42,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:04:42,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:04:42,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:04:42,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:04:42,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:04:42,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:04:42,029 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 13:04:42,072 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:04:42,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:04:42,073 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:04:42,074 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:04:42,074 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:04:42,074 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:04:42,074 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:04:42,075 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:04:42,075 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:04:42,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:04:42,078 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:04:42,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:04:42,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:04:42,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:04:42,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:04:42,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:04:42,080 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:04:42,080 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 13:04:42,080 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 13:04:42,080 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:04:42,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:04:42,081 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:04:42,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:04:42,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:04:42,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 13:04:42,082 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:04:42,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:04:42,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:04:42,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:04:42,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:04:42,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:04:42,083 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 13:04:42,084 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 13:04:42,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:04:42,084 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:04:42,085 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:04:42,085 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_bce44ab3-a68b-4966-a354-59caa3d3148a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77b3a373bd5532f9284ea33fd7b532cf320a99fa [2020-11-22 13:04:42,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:04:42,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:04:42,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:04:42,509 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:04:42,510 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:04:42,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0920a.c [2020-11-22 13:04:42,593 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/bin/utaipan/data/6006bb84d/ed7dde8f15ba4f63bc60ef68d3b981bf/FLAG0d05e1419 [2020-11-22 13:04:43,117 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:04:43,118 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/sv-benchmarks/c/float-newlib/double_req_bl_0920a.c [2020-11-22 13:04:43,125 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/bin/utaipan/data/6006bb84d/ed7dde8f15ba4f63bc60ef68d3b981bf/FLAG0d05e1419 [2020-11-22 13:04:43,492 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/bin/utaipan/data/6006bb84d/ed7dde8f15ba4f63bc60ef68d3b981bf [2020-11-22 13:04:43,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:04:43,498 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:04:43,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:04:43,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:04:43,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:04:43,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:04:43" (1/1) ... [2020-11-22 13:04:43,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@539ede79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:43, skipping insertion in model container [2020-11-22 13:04:43,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:04:43" (1/1) ... [2020-11-22 13:04:43,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:04:43,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:04:43,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:04:43,757 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:04:43,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:04:43,852 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:04:43,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:43 WrapperNode [2020-11-22 13:04:43,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:04:43,854 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:04:43,854 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:04:43,854 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:04:43,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:43" (1/1) ... [2020-11-22 13:04:43,901 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:43" (1/1) ... [2020-11-22 13:04:43,936 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:04:43,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:04:43,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:04:43,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:04:43,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:43" (1/1) ... [2020-11-22 13:04:43,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:43" (1/1) ... [2020-11-22 13:04:43,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:43" (1/1) ... [2020-11-22 13:04:43,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:43" (1/1) ... [2020-11-22 13:04:44,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:43" (1/1) ... [2020-11-22 13:04:44,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:43" (1/1) ... [2020-11-22 13:04:44,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:43" (1/1) ... [2020-11-22 13:04:44,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:04:44,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:04:44,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:04:44,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:04:44,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/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 [2020-11-22 13:04:44,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-22 13:04:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-22 13:04:44,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 13:04:44,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:04:44,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-22 13:04:44,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:04:44,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:04:44,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-22 13:04:44,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:05:07,852 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:05:07,852 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-22 13:05:07,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:07 BoogieIcfgContainer [2020-11-22 13:05:07,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:05:07,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:05:07,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:05:07,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:05:07,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:04:43" (1/3) ... [2020-11-22 13:05:07,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e7ca43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:07, skipping insertion in model container [2020-11-22 13:05:07,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:43" (2/3) ... [2020-11-22 13:05:07,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e7ca43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:07, skipping insertion in model container [2020-11-22 13:05:07,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:07" (3/3) ... [2020-11-22 13:05:07,862 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0920a.c [2020-11-22 13:05:07,874 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:05:07,886 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:05:07,899 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:05:07,935 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:05:07,935 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:05:07,936 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:05:07,936 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:05:07,936 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:05:07,936 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:05:07,936 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:05:07,936 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:05:07,948 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-11-22 13:05:07,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-22 13:05:07,957 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:07,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:07,959 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:07,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:07,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1394505008, now seen corresponding path program 1 times [2020-11-22 13:05:07,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:07,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424588661] [2020-11-22 13:05:07,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/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 [2020-11-22 13:05:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:08,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 13:05:08,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:08,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:08,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:08,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:08,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424588661] [2020-11-22 13:05:08,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:08,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 13:05:08,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163995286] [2020-11-22 13:05:08,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:05:08,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:08,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:05:08,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:05:08,257 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-11-22 13:05:08,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:08,288 INFO L93 Difference]: Finished difference Result 70 states and 111 transitions. [2020-11-22 13:05:08,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:05:08,290 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-11-22 13:05:08,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:08,300 INFO L225 Difference]: With dead ends: 70 [2020-11-22 13:05:08,300 INFO L226 Difference]: Without dead ends: 32 [2020-11-22 13:05:08,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:05:08,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-22 13:05:08,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-11-22 13:05:08,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-22 13:05:08,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2020-11-22 13:05:08,348 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 12 [2020-11-22 13:05:08,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:08,348 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2020-11-22 13:05:08,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:05:08,348 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2020-11-22 13:05:08,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 13:05:08,349 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:08,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:08,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 13:05:08,550 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:08,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:08,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1007782307, now seen corresponding path program 1 times [2020-11-22 13:05:08,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:08,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1779730482] [2020-11-22 13:05:08,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/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 [2020-11-22 13:05:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:08,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:05:08,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:08,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:08,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:08,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:08,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1779730482] [2020-11-22 13:05:08,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:08,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 13:05:08,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092281892] [2020-11-22 13:05:08,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:08,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:08,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:08,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:08,789 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand 3 states. [2020-11-22 13:05:08,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:08,832 INFO L93 Difference]: Finished difference Result 57 states and 78 transitions. [2020-11-22 13:05:08,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:08,836 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-11-22 13:05:08,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:08,837 INFO L225 Difference]: With dead ends: 57 [2020-11-22 13:05:08,837 INFO L226 Difference]: Without dead ends: 32 [2020-11-22 13:05:08,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:08,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-22 13:05:08,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-11-22 13:05:08,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-22 13:05:08,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2020-11-22 13:05:08,850 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 13 [2020-11-22 13:05:08,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:08,851 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2020-11-22 13:05:08,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:08,851 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2020-11-22 13:05:08,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 13:05:08,852 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:08,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:09,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 13:05:09,068 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:09,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:09,069 INFO L82 PathProgramCache]: Analyzing trace with hash 32951480, now seen corresponding path program 1 times [2020-11-22 13:05:09,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:09,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [557271020] [2020-11-22 13:05:09,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/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 [2020-11-22 13:05:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:09,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-22 13:05:09,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:09,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:09,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:09,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:09,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [557271020] [2020-11-22 13:05:09,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:09,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-22 13:05:09,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499534995] [2020-11-22 13:05:09,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-22 13:05:09,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:09,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-22 13:05:09,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:05:09,789 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand 10 states. [2020-11-22 13:05:15,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:15,210 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2020-11-22 13:05:15,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 13:05:15,254 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-11-22 13:05:15,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:15,255 INFO L225 Difference]: With dead ends: 37 [2020-11-22 13:05:15,255 INFO L226 Difference]: Without dead ends: 19 [2020-11-22 13:05:15,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-11-22 13:05:15,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-22 13:05:15,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-22 13:05:15,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-22 13:05:15,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-11-22 13:05:15,265 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2020-11-22 13:05:15,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:15,266 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-11-22 13:05:15,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-22 13:05:15,266 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-11-22 13:05:15,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 13:05:15,267 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:15,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:15,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 13:05:15,478 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:15,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:15,479 INFO L82 PathProgramCache]: Analyzing trace with hash -677236169, now seen corresponding path program 1 times [2020-11-22 13:05:15,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:15,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721144549] [2020-11-22 13:05:15,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-22 13:05:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:05:16,942 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:05:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:05:18,316 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:05:18,442 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 13:05:18,442 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:05:18,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-22 13:05:18,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:05:18 BoogieIcfgContainer [2020-11-22 13:05:18,745 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:05:18,752 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:05:18,752 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:05:18,753 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:05:18,753 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:07" (3/4) ... [2020-11-22 13:05:18,755 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 13:05:18,868 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bce44ab3-a68b-4966-a354-59caa3d3148a/bin/utaipan/witness.graphml [2020-11-22 13:05:18,873 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:05:18,875 INFO L168 Benchmark]: Toolchain (without parser) took 35376.56 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.5 MB in the beginning and 44.9 MB in the end (delta: -13.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:18,876 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 54.5 MB. Free memory was 36.1 MB in the beginning and 36.0 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:18,876 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.68 ms. Allocated memory is still 54.5 MB. Free memory was 31.3 MB in the beginning and 37.5 MB in the end (delta: -6.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:18,877 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.62 ms. Allocated memory is still 54.5 MB. Free memory was 37.3 MB in the beginning and 35.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:18,879 INFO L168 Benchmark]: Boogie Preprocessor took 83.01 ms. Allocated memory is still 54.5 MB. Free memory was 35.1 MB in the beginning and 33.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:18,880 INFO L168 Benchmark]: RCFGBuilder took 23825.68 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 33.1 MB in the beginning and 32.6 MB in the end (delta: 501.8 kB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:18,884 INFO L168 Benchmark]: TraceAbstraction took 10889.54 ms. Allocated memory is still 67.1 MB. Free memory was 32.3 MB in the beginning and 27.6 MB in the end (delta: 4.7 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:18,885 INFO L168 Benchmark]: Witness Printer took 121.12 ms. Allocated memory is still 67.1 MB. Free memory was 48.7 MB in the beginning and 44.9 MB in the end (delta: 3.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:18,886 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 54.5 MB. Free memory was 36.1 MB in the beginning and 36.0 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 351.68 ms. Allocated memory is still 54.5 MB. Free memory was 31.3 MB in the beginning and 37.5 MB in the end (delta: -6.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 89.62 ms. Allocated memory is still 54.5 MB. Free memory was 37.3 MB in the beginning and 35.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 83.01 ms. Allocated memory is still 54.5 MB. Free memory was 35.1 MB in the beginning and 33.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 23825.68 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 33.1 MB in the beginning and 32.6 MB in the end (delta: 501.8 kB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10889.54 ms. Allocated memory is still 67.1 MB. Free memory was 32.3 MB in the beginning and 27.6 MB in the end (delta: 4.7 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Witness Printer took 121.12 ms. Allocated memory is still 67.1 MB. Free memory was 48.7 MB in the beginning and 44.9 MB in the end (delta: 3.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L34-L43] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L45] static const double zero = 0.0; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L148] double x = __VERIFIER_nondet_double(); [L150] EXPR x < 0 && isfinite_double(x) [L129] __int32_t hx; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L131] ieee_double_shape_type gh_u; [L132] gh_u.value = (x) [L133] EXPR gh_u.parts.msw [L133] (hx) = gh_u.parts.msw [L135] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L150] EXPR x < 0 && isfinite_double(x) VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L150] COND TRUE (x < 0 && isfinite_double(x)) [L48] double hfsq, f, s, z, R, w, t1, t2, dk; [L49] __int32_t k, hx, i, j; [L50] __uint32_t lx; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L53] ieee_double_shape_type ew_u; [L54] ew_u.value = (x) [L55] EXPR ew_u.parts.msw [L55] (hx) = ew_u.parts.msw [L56] EXPR ew_u.parts.lsw [L56] (lx) = ew_u.parts.lsw [L59] k = 0 VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L60] COND TRUE hx < 0x00100000 VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L61] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L62] return -two54_log / zero; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L152] double res = __ieee754_log(x); [L139] return x != x; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L155] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_0920a.c", 3, "reach_error") VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 103 SDtfs, 74 SDslu, 63 SDs, 0 SdLazy, 24 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 78 ConstructedInterpolants, 17 QuantifiedInterpolants, 4426 SizeOfPredicates, 8 NumberOfNonLiveVariables, 195 ConjunctsInSsa, 11 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 incorrect! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...