./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0931.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_8c42ca5c-1d45-4fb6-b664-741977efdcfb/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8c42ca5c-1d45-4fb6-b664-741977efdcfb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8c42ca5c-1d45-4fb6-b664-741977efdcfb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8c42ca5c-1d45-4fb6-b664-741977efdcfb/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0931.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8c42ca5c-1d45-4fb6-b664-741977efdcfb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8c42ca5c-1d45-4fb6-b664-741977efdcfb/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 0a345343e4b2fce1b8c67d8cf098c119a4547223 ................................................................................................................................................................................................................................................................................................................................. 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_8c42ca5c-1d45-4fb6-b664-741977efdcfb/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8c42ca5c-1d45-4fb6-b664-741977efdcfb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8c42ca5c-1d45-4fb6-b664-741977efdcfb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8c42ca5c-1d45-4fb6-b664-741977efdcfb/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0931.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8c42ca5c-1d45-4fb6-b664-741977efdcfb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8c42ca5c-1d45-4fb6-b664-741977efdcfb/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 0a345343e4b2fce1b8c67d8cf098c119a4547223 ....................................................................................................................................................................................................................................................................................................................................................................................... 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 13:09:00,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:09:00,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:09:00,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:09:00,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:09:00,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:09:00,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:09:00,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:09:00,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:09:00,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:09:00,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:09:00,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:09:00,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:09:00,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:09:00,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:09:00,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:09:00,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:09:00,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:09:00,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:09:00,844 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:09:00,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:09:00,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:09:00,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:09:00,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:09:00,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:09:00,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:09:00,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:09:00,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:09:00,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:09:00,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:09:00,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:09:00,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:09:00,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:09:00,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:09:00,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:09:00,869 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:09:00,870 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:09:00,870 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:09:00,871 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:09:00,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:09:00,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:09:00,875 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8c42ca5c-1d45-4fb6-b664-741977efdcfb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:09:00,924 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:09:00,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:09:00,926 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:09:00,926 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:09:00,926 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:09:00,927 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:09:00,927 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:09:00,927 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:09:00,927 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:09:00,927 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:09:00,929 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:09:00,929 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:09:00,929 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:09:00,929 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:09:00,930 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:09:00,931 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:09:00,931 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:09:00,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:09:00,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:09:00,932 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:09:00,932 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:09:00,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:09:00,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:09:00,932 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:09:00,933 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:09:00,933 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:09:00,933 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:09:00,933 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:09:00,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:09:00,935 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:09:00,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:09:00,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:09:00,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:09:00,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:09:00,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:09:00,937 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:09:00,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:09:00,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:09:00,938 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:09:00,938 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:09:00,938 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_8c42ca5c-1d45-4fb6-b664-741977efdcfb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8c42ca5c-1d45-4fb6-b664-741977efdcfb/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a345343e4b2fce1b8c67d8cf098c119a4547223 [2020-11-22 13:09:01,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:09:01,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:09:01,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:09:01,293 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:09:01,294 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:09:01,295 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8c42ca5c-1d45-4fb6-b664-741977efdcfb/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0931.c [2020-11-22 13:09:01,403 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8c42ca5c-1d45-4fb6-b664-741977efdcfb/bin/utaipan/data/90a272fd1/2fb5e8edb5ca414dbd29a97fb065c7ec/FLAG0829c1c3a [2020-11-22 13:09:02,058 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:09:02,058 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8c42ca5c-1d45-4fb6-b664-741977efdcfb/sv-benchmarks/c/float-newlib/double_req_bl_0931.c [2020-11-22 13:09:02,069 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8c42ca5c-1d45-4fb6-b664-741977efdcfb/bin/utaipan/data/90a272fd1/2fb5e8edb5ca414dbd29a97fb065c7ec/FLAG0829c1c3a [2020-11-22 13:09:02,384 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8c42ca5c-1d45-4fb6-b664-741977efdcfb/bin/utaipan/data/90a272fd1/2fb5e8edb5ca414dbd29a97fb065c7ec [2020-11-22 13:09:02,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:09:02,390 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:09:02,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:09:02,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:09:02,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:09:02,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:09:02" (1/1) ... [2020-11-22 13:09:02,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a98a096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:02, skipping insertion in model container [2020-11-22 13:09:02,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:09:02" (1/1) ... [2020-11-22 13:09:02,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:09:02,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:09:02,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:09:02,699 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:09:02,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:09:02,800 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:09:02,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:02 WrapperNode [2020-11-22 13:09:02,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:09:02,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:09:02,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:09:02,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:09:02,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:02" (1/1) ... [2020-11-22 13:09:02,824 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:02" (1/1) ... [2020-11-22 13:09:02,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:09:02,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:09:02,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:09:02,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:09:02,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:02" (1/1) ... [2020-11-22 13:09:02,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:02" (1/1) ... [2020-11-22 13:09:02,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:02" (1/1) ... [2020-11-22 13:09:02,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:02" (1/1) ... [2020-11-22 13:09:02,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:02" (1/1) ... [2020-11-22 13:09:02,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:02" (1/1) ... [2020-11-22 13:09:02,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:02" (1/1) ... [2020-11-22 13:09:02,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:09:02,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:09:02,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:09:02,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:09:02,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c42ca5c-1d45-4fb6-b664-741977efdcfb/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 13:09:03,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:09:03,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:09:03,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-22 13:09:03,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 13:09:03,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-22 13:09:03,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:09:03,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:09:03,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 13:09:03,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:09:03,945 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:09:03,945 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-22 13:09:03,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:09:03 BoogieIcfgContainer [2020-11-22 13:09:03,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:09:03,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:09:03,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:09:03,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:09:03,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:09:02" (1/3) ... [2020-11-22 13:09:03,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0bd6d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:09:03, skipping insertion in model container [2020-11-22 13:09:03,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:02" (2/3) ... [2020-11-22 13:09:03,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0bd6d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:09:03, skipping insertion in model container [2020-11-22 13:09:03,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:09:03" (3/3) ... [2020-11-22 13:09:03,959 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0931.c [2020-11-22 13:09:03,972 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:09:03,976 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:09:03,987 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:09:04,010 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:09:04,011 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:09:04,011 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:09:04,011 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:09:04,012 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:09:04,012 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:09:04,012 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:09:04,013 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:09:04,040 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-11-22 13:09:04,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 13:09:04,049 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:09:04,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:09:04,050 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:09:04,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:09:04,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1151170609, now seen corresponding path program 1 times [2020-11-22 13:09:04,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:09:04,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749318204] [2020-11-22 13:09:04,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:09:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:09:04,260 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 13:09:04,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749318204] [2020-11-22 13:09:04,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:09:04,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:09:04,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785410717] [2020-11-22 13:09:04,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:09:04,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:09:04,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:09:04,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:09:04,291 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-11-22 13:09:04,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:09:04,313 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2020-11-22 13:09:04,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:09:04,315 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-22 13:09:04,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:09:04,340 INFO L225 Difference]: With dead ends: 43 [2020-11-22 13:09:04,347 INFO L226 Difference]: Without dead ends: 20 [2020-11-22 13:09:04,351 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 13:09:04,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-22 13:09:04,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-22 13:09:04,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-22 13:09:04,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-11-22 13:09:04,396 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 10 [2020-11-22 13:09:04,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:09:04,397 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-11-22 13:09:04,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:09:04,397 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-11-22 13:09:04,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-22 13:09:04,398 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:09:04,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:09:04,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:09:04,399 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:09:04,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:09:04,404 INFO L82 PathProgramCache]: Analyzing trace with hash -912026999, now seen corresponding path program 1 times [2020-11-22 13:09:04,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:09:04,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403901792] [2020-11-22 13:09:04,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:09:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:09:04,602 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:09:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:09:04,721 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:09:04,774 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 13:09:04,780 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:09:04,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:09:04,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:09:04 BoogieIcfgContainer [2020-11-22 13:09:04,854 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:09:04,854 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:09:04,855 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:09:04,855 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:09:04,855 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:09:03" (3/4) ... [2020-11-22 13:09:04,858 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 13:09:04,859 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:09:04,861 INFO L168 Benchmark]: Toolchain (without parser) took 2469.54 ms. Allocated memory is still 113.2 MB. Free memory was 82.7 MB in the beginning and 65.6 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:09:04,862 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 81.8 MB. Free memory was 39.1 MB in the beginning and 39.1 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:09:04,862 INFO L168 Benchmark]: CACSL2BoogieTranslator took 409.30 ms. Allocated memory is still 113.2 MB. Free memory was 82.7 MB in the beginning and 87.5 MB in the end (delta: -4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:09:04,863 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.63 ms. Allocated memory is still 113.2 MB. Free memory was 87.5 MB in the beginning and 85.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:09:04,864 INFO L168 Benchmark]: Boogie Preprocessor took 66.08 ms. Allocated memory is still 113.2 MB. Free memory was 85.2 MB in the beginning and 83.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:09:04,865 INFO L168 Benchmark]: RCFGBuilder took 995.35 ms. Allocated memory is still 113.2 MB. Free memory was 83.3 MB in the beginning and 46.7 MB in the end (delta: 36.6 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:09:04,866 INFO L168 Benchmark]: TraceAbstraction took 904.43 ms. Allocated memory is still 113.2 MB. Free memory was 46.7 MB in the beginning and 65.6 MB in the end (delta: -18.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:09:04,866 INFO L168 Benchmark]: Witness Printer took 4.49 ms. Allocated memory is still 113.2 MB. Free memory is still 65.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:09:04,870 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 81.8 MB. Free memory was 39.1 MB in the beginning and 39.1 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 409.30 ms. Allocated memory is still 113.2 MB. Free memory was 82.7 MB in the beginning and 87.5 MB in the end (delta: -4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.63 ms. Allocated memory is still 113.2 MB. Free memory was 87.5 MB in the beginning and 85.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.08 ms. Allocated memory is still 113.2 MB. Free memory was 85.2 MB in the beginning and 83.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 995.35 ms. Allocated memory is still 113.2 MB. Free memory was 83.3 MB in the beginning and 46.7 MB in the end (delta: 36.6 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 904.43 ms. Allocated memory is still 113.2 MB. Free memory was 46.7 MB in the beginning and 65.6 MB in the end (delta: -18.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.49 ms. Allocated memory is still 113.2 MB. Free memory is still 65.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 29, overapproximation of someBinaryArithmeticDOUBLEoperation at line 62, overapproximation of bitwiseAnd at line 28. 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; [L134] double x = 1.0 / 0.0; [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 TRUE 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] [L61] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L62] return -two54_log / zero; 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] [L135] double res = __ieee754_log(x); [L21] __int32_t hx, 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] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (hx) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lx) = ew_u.parts.lsw [L28] hx &= 0x7fffffff [L29] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L30] hx = 0x7ff00000 - hx [L31] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L138] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_0931.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, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:09:07,775 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:09:07,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:09:07,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:09:07,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:09:07,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:09:07,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:09:07,837 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:09:07,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:09:07,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:09:07,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:09:07,854 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:09:07,855 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:09:07,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:09:07,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:09:07,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:09:07,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:09:07,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:09:07,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:09:07,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:09:07,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:09:07,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:09:07,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:09:07,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:09:07,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:09:07,913 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:09:07,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:09:07,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:09:07,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:09:07,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:09:07,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:09:07,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:09:07,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:09:07,924 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:09:07,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:09:07,926 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:09:07,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:09:07,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:09:07,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:09:07,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:09:07,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:09:07,932 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8c42ca5c-1d45-4fb6-b664-741977efdcfb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 13:09:07,983 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:09:07,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:09:07,986 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:09:07,986 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:09:07,987 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:09:07,987 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:09:07,987 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:09:07,987 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:09:07,988 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:09:07,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:09:07,991 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:09:07,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:09:07,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:09:07,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:09:07,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:09:07,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:09:07,992 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:09:07,993 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 13:09:07,993 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 13:09:07,993 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:09:07,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:09:07,994 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:09:07,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:09:07,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:09:07,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 13:09:07,995 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:09:07,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:09:07,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:09:07,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:09:07,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:09:07,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:09:07,997 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 13:09:07,997 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 13:09:07,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:09:07,998 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:09:07,998 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:09:07,998 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_8c42ca5c-1d45-4fb6-b664-741977efdcfb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8c42ca5c-1d45-4fb6-b664-741977efdcfb/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a345343e4b2fce1b8c67d8cf098c119a4547223 [2020-11-22 13:09:08,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:09:08,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:09:08,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:09:08,525 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:09:08,526 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:09:08,527 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8c42ca5c-1d45-4fb6-b664-741977efdcfb/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0931.c [2020-11-22 13:09:08,614 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8c42ca5c-1d45-4fb6-b664-741977efdcfb/bin/utaipan/data/39d08fa55/f9a9dff14ce34633bb7f9f43f5a09c4b/FLAG97cac0bf7 [2020-11-22 13:09:09,293 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:09:09,294 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8c42ca5c-1d45-4fb6-b664-741977efdcfb/sv-benchmarks/c/float-newlib/double_req_bl_0931.c [2020-11-22 13:09:09,308 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8c42ca5c-1d45-4fb6-b664-741977efdcfb/bin/utaipan/data/39d08fa55/f9a9dff14ce34633bb7f9f43f5a09c4b/FLAG97cac0bf7 [2020-11-22 13:09:09,634 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8c42ca5c-1d45-4fb6-b664-741977efdcfb/bin/utaipan/data/39d08fa55/f9a9dff14ce34633bb7f9f43f5a09c4b [2020-11-22 13:09:09,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:09:09,638 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:09:09,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:09:09,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:09:09,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:09:09,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:09:09" (1/1) ... [2020-11-22 13:09:09,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@354595ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:09, skipping insertion in model container [2020-11-22 13:09:09,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:09:09" (1/1) ... [2020-11-22 13:09:09,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:09:09,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:09:09,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:09:09,964 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:09:10,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:09:10,066 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:09:10,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:10 WrapperNode [2020-11-22 13:09:10,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:09:10,069 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:09:10,069 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:09:10,070 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:09:10,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:10" (1/1) ... [2020-11-22 13:09:10,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:10" (1/1) ... [2020-11-22 13:09:10,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:09:10,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:09:10,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:09:10,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:09:10,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:10" (1/1) ... [2020-11-22 13:09:10,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:10" (1/1) ... [2020-11-22 13:09:10,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:10" (1/1) ... [2020-11-22 13:09:10,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:10" (1/1) ... [2020-11-22 13:09:10,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:10" (1/1) ... [2020-11-22 13:09:10,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:10" (1/1) ... [2020-11-22 13:09:10,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:10" (1/1) ... [2020-11-22 13:09:10,207 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:09:10,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:09:10,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:09:10,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:09:10,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c42ca5c-1d45-4fb6-b664-741977efdcfb/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 13:09:10,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-22 13:09:10,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-22 13:09:10,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 13:09:10,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:09:10,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-22 13:09:10,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:09:10,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:09:10,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-22 13:09:10,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:09:33,763 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:09:33,771 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-22 13:09:33,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:09:33 BoogieIcfgContainer [2020-11-22 13:09:33,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:09:33,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:09:33,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:09:33,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:09:33,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:09:09" (1/3) ... [2020-11-22 13:09:33,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@209ed04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:09:33, skipping insertion in model container [2020-11-22 13:09:33,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:10" (2/3) ... [2020-11-22 13:09:33,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@209ed04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:09:33, skipping insertion in model container [2020-11-22 13:09:33,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:09:33" (3/3) ... [2020-11-22 13:09:33,787 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0931.c [2020-11-22 13:09:33,798 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:09:33,803 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:09:33,814 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:09:33,850 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:09:33,850 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:09:33,850 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:09:33,851 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:09:33,851 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:09:33,851 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:09:33,851 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:09:33,851 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:09:33,866 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-22 13:09:33,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-22 13:09:33,872 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:09:33,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:09:33,873 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:09:33,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:09:33,879 INFO L82 PathProgramCache]: Analyzing trace with hash -2110731690, now seen corresponding path program 1 times [2020-11-22 13:09:33,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:09:33,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593574342] [2020-11-22 13:09:33,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c42ca5c-1d45-4fb6-b664-741977efdcfb/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 13:09:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:09:34,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 13:09:34,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:09:34,869 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 13:09:34,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:09:34,874 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 13:09:34,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593574342] [2020-11-22 13:09:34,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:09:34,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 13:09:34,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549551939] [2020-11-22 13:09:34,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:09:34,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:09:34,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:09:34,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:09:34,895 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-22 13:09:34,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:09:34,912 INFO L93 Difference]: Finished difference Result 63 states and 101 transitions. [2020-11-22 13:09:34,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:09:34,914 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-11-22 13:09:34,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:09:34,922 INFO L225 Difference]: With dead ends: 63 [2020-11-22 13:09:34,922 INFO L226 Difference]: Without dead ends: 29 [2020-11-22 13:09:34,925 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 13:09:34,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-22 13:09:34,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-22 13:09:34,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-22 13:09:34,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2020-11-22 13:09:34,956 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 12 [2020-11-22 13:09:34,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:09:34,957 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2020-11-22 13:09:34,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:09:34,957 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2020-11-22 13:09:34,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 13:09:34,958 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:09:34,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:09:35,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 13:09:35,171 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:09:35,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:09:35,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1825265086, now seen corresponding path program 1 times [2020-11-22 13:09:35,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:09:35,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1768561676] [2020-11-22 13:09:35,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c42ca5c-1d45-4fb6-b664-741977efdcfb/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 13:09:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:09:36,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 13:09:36,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:09:36,232 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 13:09:36,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:09:36,348 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 13:09:36,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1768561676] [2020-11-22 13:09:36,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:09:36,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-22 13:09:36,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70262713] [2020-11-22 13:09:36,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 13:09:36,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:09:36,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 13:09:36,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:09:36,352 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand 6 states. [2020-11-22 13:09:36,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:09:36,513 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2020-11-22 13:09:36,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:09:36,521 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-22 13:09:36,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:09:36,522 INFO L225 Difference]: With dead ends: 38 [2020-11-22 13:09:36,522 INFO L226 Difference]: Without dead ends: 15 [2020-11-22 13:09:36,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:09:36,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-22 13:09:36,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-22 13:09:36,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-22 13:09:36,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-11-22 13:09:36,527 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 14 [2020-11-22 13:09:36,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:09:36,527 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-11-22 13:09:36,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 13:09:36,528 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-11-22 13:09:36,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 13:09:36,528 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:09:36,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:09:36,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 13:09:36,730 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:09:36,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:09:36,730 INFO L82 PathProgramCache]: Analyzing trace with hash 2016616349, now seen corresponding path program 1 times [2020-11-22 13:09:36,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:09:36,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597363007] [2020-11-22 13:09:36,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c42ca5c-1d45-4fb6-b664-741977efdcfb/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 13:09:37,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:09:37,028 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:09:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:09:37,246 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:09:37,313 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 13:09:37,313 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:09:37,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 13:09:37,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:09:37 BoogieIcfgContainer [2020-11-22 13:09:37,587 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:09:37,587 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:09:37,587 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:09:37,587 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:09:37,588 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:09:33" (3/4) ... [2020-11-22 13:09:37,590 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 13:09:37,676 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8c42ca5c-1d45-4fb6-b664-741977efdcfb/bin/utaipan/witness.graphml [2020-11-22 13:09:37,676 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:09:37,678 INFO L168 Benchmark]: Toolchain (without parser) took 28038.97 ms. Allocated memory was 58.7 MB in the beginning and 83.9 MB in the end (delta: 25.2 MB). Free memory was 37.8 MB in the beginning and 32.3 MB in the end (delta: 5.5 MB). Peak memory consumption was 31.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:09:37,679 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 58.7 MB. Free memory was 41.4 MB in the beginning and 41.4 MB in the end (delta: 43.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:09:37,679 INFO L168 Benchmark]: CACSL2BoogieTranslator took 408.70 ms. Allocated memory is still 58.7 MB. Free memory was 37.6 MB in the beginning and 41.8 MB in the end (delta: -4.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. [2020-11-22 13:09:37,680 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.99 ms. Allocated memory is still 58.7 MB. Free memory was 41.7 MB in the beginning and 39.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:09:37,680 INFO L168 Benchmark]: Boogie Preprocessor took 47.38 ms. Allocated memory is still 58.7 MB. Free memory was 39.5 MB in the beginning and 37.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:09:37,681 INFO L168 Benchmark]: RCFGBuilder took 23569.32 ms. Allocated memory was 58.7 MB in the beginning and 83.9 MB in the end (delta: 25.2 MB). Free memory was 37.6 MB in the beginning and 52.2 MB in the end (delta: -14.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:09:37,681 INFO L168 Benchmark]: TraceAbstraction took 3807.61 ms. Allocated memory is still 83.9 MB. Free memory was 51.8 MB in the beginning and 36.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2020-11-22 13:09:37,682 INFO L168 Benchmark]: Witness Printer took 89.27 ms. Allocated memory is still 83.9 MB. Free memory was 36.1 MB in the beginning and 32.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:09:37,684 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 58.7 MB. Free memory was 41.4 MB in the beginning and 41.4 MB in the end (delta: 43.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 408.70 ms. Allocated memory is still 58.7 MB. Free memory was 37.6 MB in the beginning and 41.8 MB in the end (delta: -4.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 89.99 ms. Allocated memory is still 58.7 MB. Free memory was 41.7 MB in the beginning and 39.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.38 ms. Allocated memory is still 58.7 MB. Free memory was 39.5 MB in the beginning and 37.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 23569.32 ms. Allocated memory was 58.7 MB in the beginning and 83.9 MB in the end (delta: 25.2 MB). Free memory was 37.6 MB in the beginning and 52.2 MB in the end (delta: -14.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3807.61 ms. Allocated memory is still 83.9 MB. Free memory was 51.8 MB in the beginning and 36.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. * Witness Printer took 89.27 ms. Allocated memory is still 83.9 MB. Free memory was 36.1 MB in the beginning and 32.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 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] [L134] double x = 1.0 / 0.0; [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 FALSE !(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] [L73] COND TRUE hx >= 0x7ff00000 [L74] 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] [L135] double res = __ieee754_log(x); [L21] __int32_t hx, 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] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (hx) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lx) = ew_u.parts.lsw [L28] hx &= 0x7fffffff [L29] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L30] hx = 0x7ff00000 - hx [L31] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 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] [L138] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_0931.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, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 53 SDtfs, 21 SDslu, 4 SDs, 0 SdLazy, 5 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 1.9s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 48 ConstructedInterpolants, 5 QuantifiedInterpolants, 1750 SizeOfPredicates, 7 NumberOfNonLiveVariables, 126 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...