./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0910b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cbb939d5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0910b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c07e352bcbba2d31c9106eacdc6e86cfa9e8af72 ........................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0910b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c07e352bcbba2d31c9106eacdc6e86cfa9e8af72 ..................................................................................................................................................................................................................................................................................................................................... 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-cbb939d [2020-11-23 16:31:21,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-23 16:31:21,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-23 16:31:21,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-23 16:31:21,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-23 16:31:21,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-23 16:31:21,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-23 16:31:21,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-23 16:31:21,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-23 16:31:21,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-23 16:31:21,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-23 16:31:21,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-23 16:31:21,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-23 16:31:21,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-23 16:31:21,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-23 16:31:21,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-23 16:31:21,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-23 16:31:21,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-23 16:31:21,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-23 16:31:21,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-23 16:31:21,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-23 16:31:21,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-23 16:31:21,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-23 16:31:21,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-23 16:31:21,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-23 16:31:21,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-23 16:31:21,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-23 16:31:21,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-23 16:31:21,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-23 16:31:21,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-23 16:31:21,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-23 16:31:21,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-23 16:31:21,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-23 16:31:21,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-23 16:31:21,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-23 16:31:21,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-23 16:31:21,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-23 16:31:21,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-23 16:31:21,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-23 16:31:21,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-23 16:31:21,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-23 16:31:21,900 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-23 16:31:21,957 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-23 16:31:21,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-23 16:31:21,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-23 16:31:21,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-23 16:31:21,963 INFO L138 SettingsManager]: * Use SBE=true [2020-11-23 16:31:21,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-23 16:31:21,963 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-23 16:31:21,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-23 16:31:21,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-23 16:31:21,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-23 16:31:21,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-23 16:31:21,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-23 16:31:21,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-23 16:31:21,966 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-23 16:31:21,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-23 16:31:21,967 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-23 16:31:21,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-23 16:31:21,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-23 16:31:21,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-23 16:31:21,968 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-23 16:31:21,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-23 16:31:21,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-23 16:31:21,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-23 16:31:21,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-23 16:31:21,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-23 16:31:21,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-23 16:31:21,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-23 16:31:21,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-23 16:31:21,970 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-23 16:31:21,971 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c07e352bcbba2d31c9106eacdc6e86cfa9e8af72 [2020-11-23 16:31:22,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-23 16:31:22,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-23 16:31:22,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-23 16:31:22,453 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-23 16:31:22,454 INFO L275 PluginConnector]: CDTParser initialized [2020-11-23 16:31:22,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0910b.c [2020-11-23 16:31:22,538 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39d243287/6b4d3b5965744f988c5f0f9ca45a8ac6/FLAGc8df38292 [2020-11-23 16:31:23,184 INFO L306 CDTParser]: Found 1 translation units. [2020-11-23 16:31:23,185 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0910b.c [2020-11-23 16:31:23,197 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39d243287/6b4d3b5965744f988c5f0f9ca45a8ac6/FLAGc8df38292 [2020-11-23 16:31:23,535 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39d243287/6b4d3b5965744f988c5f0f9ca45a8ac6 [2020-11-23 16:31:23,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-23 16:31:23,551 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-23 16:31:23,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-23 16:31:23,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-23 16:31:23,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-23 16:31:23,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:31:23" (1/1) ... [2020-11-23 16:31:23,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44c05c01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:31:23, skipping insertion in model container [2020-11-23 16:31:23,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:31:23" (1/1) ... [2020-11-23 16:31:23,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-23 16:31:23,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-23 16:31:23,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-23 16:31:23,838 INFO L203 MainTranslator]: Completed pre-run [2020-11-23 16:31:23,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-23 16:31:23,905 INFO L208 MainTranslator]: Completed translation [2020-11-23 16:31:23,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:31:23 WrapperNode [2020-11-23 16:31:23,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-23 16:31:23,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-23 16:31:23,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-23 16:31:23,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-23 16:31:23,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:31:23" (1/1) ... [2020-11-23 16:31:23,952 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:31:23" (1/1) ... [2020-11-23 16:31:24,013 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-23 16:31:24,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-23 16:31:24,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-23 16:31:24,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-23 16:31:24,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:31:23" (1/1) ... [2020-11-23 16:31:24,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:31:23" (1/1) ... [2020-11-23 16:31:24,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:31:23" (1/1) ... [2020-11-23 16:31:24,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:31:23" (1/1) ... [2020-11-23 16:31:24,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:31:23" (1/1) ... [2020-11-23 16:31:24,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:31:23" (1/1) ... [2020-11-23 16:31:24,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:31:23" (1/1) ... [2020-11-23 16:31:24,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-23 16:31:24,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-23 16:31:24,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-23 16:31:24,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-23 16:31:24,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:31:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-11-23 16:31:24,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-23 16:31:24,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-23 16:31:24,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-23 16:31:24,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-23 16:31:24,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-23 16:31:24,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-23 16:31:24,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-23 16:31:24,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-23 16:31:24,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-23 16:31:24,836 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-23 16:31:24,837 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-23 16:31:24,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:31:24 BoogieIcfgContainer [2020-11-23 16:31:24,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-23 16:31:24,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-23 16:31:24,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-23 16:31:24,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-23 16:31:24,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:31:23" (1/3) ... [2020-11-23 16:31:24,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e9d474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:31:24, skipping insertion in model container [2020-11-23 16:31:24,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:31:23" (2/3) ... [2020-11-23 16:31:24,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e9d474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:31:24, skipping insertion in model container [2020-11-23 16:31:24,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:31:24" (3/3) ... [2020-11-23 16:31:24,851 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0910b.c [2020-11-23 16:31:24,874 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-23 16:31:24,878 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-23 16:31:24,891 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-23 16:31:24,938 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-23 16:31:24,938 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-23 16:31:24,938 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-23 16:31:24,939 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-23 16:31:24,939 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-23 16:31:24,939 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-23 16:31:24,939 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-23 16:31:24,939 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-23 16:31:24,959 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-23 16:31:24,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-23 16:31:24,967 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 16:31:24,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 16:31:24,969 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 16:31:24,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 16:31:24,976 INFO L82 PathProgramCache]: Analyzing trace with hash -2110731690, now seen corresponding path program 1 times [2020-11-23 16:31:24,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-23 16:31:24,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401193909] [2020-11-23 16:31:24,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-23 16:31:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-23 16:31:25,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 16:31:25,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401193909] [2020-11-23 16:31:25,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-23 16:31:25,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-23 16:31:25,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420596090] [2020-11-23 16:31:25,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-23 16:31:25,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-23 16:31:25,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-23 16:31:25,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-23 16:31:25,173 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-23 16:31:25,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-23 16:31:25,209 INFO L93 Difference]: Finished difference Result 63 states and 101 transitions. [2020-11-23 16:31:25,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-23 16:31:25,211 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-11-23 16:31:25,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-23 16:31:25,222 INFO L225 Difference]: With dead ends: 63 [2020-11-23 16:31:25,222 INFO L226 Difference]: Without dead ends: 29 [2020-11-23 16:31:25,226 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 [2020-11-23 16:31:25,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-23 16:31:25,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-23 16:31:25,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-23 16:31:25,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2020-11-23 16:31:25,268 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 12 [2020-11-23 16:31:25,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-23 16:31:25,268 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2020-11-23 16:31:25,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-23 16:31:25,269 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2020-11-23 16:31:25,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-23 16:31:25,269 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 16:31:25,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 16:31:25,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-23 16:31:25,270 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 16:31:25,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 16:31:25,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1825265086, now seen corresponding path program 1 times [2020-11-23 16:31:25,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-23 16:31:25,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797643351] [2020-11-23 16:31:25,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-23 16:31:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-23 16:31:25,453 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-23 16:31:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-23 16:31:25,578 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-23 16:31:25,649 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-23 16:31:25,650 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-23 16:31:25,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-23 16:31:25,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:31:25 BoogieIcfgContainer [2020-11-23 16:31:25,743 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-23 16:31:25,745 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-23 16:31:25,746 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-23 16:31:25,746 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-23 16:31:25,747 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:31:24" (3/4) ... [2020-11-23 16:31:25,751 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-23 16:31:25,751 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-23 16:31:25,758 INFO L168 Benchmark]: Toolchain (without parser) took 2208.86 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.3 MB in the beginning and 35.6 MB in the end (delta: -14.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:31:25,759 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 44.0 MB. Free memory is still 29.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:31:25,760 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.11 ms. Allocated memory is still 44.0 MB. Free memory was 20.6 MB in the beginning and 19.9 MB in the end (delta: 763.1 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-11-23 16:31:25,762 INFO L168 Benchmark]: Boogie Procedure Inliner took 105.16 ms. Allocated memory is still 44.0 MB. Free memory was 19.9 MB in the beginning and 27.4 MB in the end (delta: -7.5 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-11-23 16:31:25,763 INFO L168 Benchmark]: Boogie Preprocessor took 63.30 ms. Allocated memory is still 44.0 MB. Free memory was 27.4 MB in the beginning and 25.7 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:31:25,765 INFO L168 Benchmark]: RCFGBuilder took 761.42 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 25.7 MB in the beginning and 36.6 MB in the end (delta: -11.0 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2020-11-23 16:31:25,766 INFO L168 Benchmark]: TraceAbstraction took 900.74 ms. Allocated memory is still 54.5 MB. Free memory was 36.1 MB in the beginning and 35.9 MB in the end (delta: 177.1 kB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. [2020-11-23 16:31:25,768 INFO L168 Benchmark]: Witness Printer took 5.98 ms. Allocated memory is still 54.5 MB. Free memory was 35.9 MB in the beginning and 35.6 MB in the end (delta: 315.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:31:25,786 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 44.0 MB. Free memory is still 29.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 353.11 ms. Allocated memory is still 44.0 MB. Free memory was 20.6 MB in the beginning and 19.9 MB in the end (delta: 763.1 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 105.16 ms. Allocated memory is still 44.0 MB. Free memory was 19.9 MB in the beginning and 27.4 MB in the end (delta: -7.5 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.30 ms. Allocated memory is still 44.0 MB. Free memory was 27.4 MB in the beginning and 25.7 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 761.42 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 25.7 MB in the beginning and 36.6 MB in the end (delta: -11.0 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 900.74 ms. Allocated memory is still 54.5 MB. Free memory was 36.1 MB in the beginning and 35.9 MB in the end (delta: 177.1 kB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. * Witness Printer took 5.98 ms. Allocated memory is still 54.5 MB. Free memory was 35.9 MB in the beginning and 35.6 MB in the end (delta: 315.7 kB). 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 someUnaryDOUBLEoperation at line 134, 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; 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] [L134] double x = -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); 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] [L138] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_0910b.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, 33 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: 42 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=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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 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-cbb939d [2020-11-23 16:31:28,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-23 16:31:28,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-23 16:31:28,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-23 16:31:28,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-23 16:31:28,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-23 16:31:28,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-23 16:31:28,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-23 16:31:28,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-23 16:31:28,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-23 16:31:28,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-23 16:31:28,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-23 16:31:28,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-23 16:31:28,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-23 16:31:28,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-23 16:31:28,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-23 16:31:28,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-23 16:31:28,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-23 16:31:28,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-23 16:31:28,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-23 16:31:28,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-23 16:31:28,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-23 16:31:28,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-23 16:31:28,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-23 16:31:28,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-23 16:31:28,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-23 16:31:28,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-23 16:31:28,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-23 16:31:28,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-23 16:31:28,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-23 16:31:28,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-23 16:31:28,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-23 16:31:28,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-23 16:31:28,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-23 16:31:28,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-23 16:31:28,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-23 16:31:28,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-23 16:31:28,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-23 16:31:28,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-23 16:31:28,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-23 16:31:28,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-23 16:31:28,582 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-23 16:31:28,610 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-23 16:31:28,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-23 16:31:28,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-23 16:31:28,612 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-23 16:31:28,612 INFO L138 SettingsManager]: * Use SBE=true [2020-11-23 16:31:28,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-23 16:31:28,612 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-23 16:31:28,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-23 16:31:28,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-23 16:31:28,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-23 16:31:28,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-23 16:31:28,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-23 16:31:28,613 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-23 16:31:28,614 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-23 16:31:28,614 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-23 16:31:28,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-23 16:31:28,614 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-23 16:31:28,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-23 16:31:28,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-23 16:31:28,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-23 16:31:28,615 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-23 16:31:28,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-23 16:31:28,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-23 16:31:28,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-23 16:31:28,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-23 16:31:28,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-23 16:31:28,616 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-23 16:31:28,616 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-23 16:31:28,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-23 16:31:28,617 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-23 16:31:28,617 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-23 16:31:28,617 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c07e352bcbba2d31c9106eacdc6e86cfa9e8af72 [2020-11-23 16:31:29,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-23 16:31:29,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-23 16:31:29,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-23 16:31:29,093 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-23 16:31:29,094 INFO L275 PluginConnector]: CDTParser initialized [2020-11-23 16:31:29,095 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0910b.c [2020-11-23 16:31:29,172 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dd8089e3/ca42545e84eb4181b5ae2382c4a14aa2/FLAG0db4f3500 [2020-11-23 16:31:29,826 INFO L306 CDTParser]: Found 1 translation units. [2020-11-23 16:31:29,826 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0910b.c [2020-11-23 16:31:29,844 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dd8089e3/ca42545e84eb4181b5ae2382c4a14aa2/FLAG0db4f3500 [2020-11-23 16:31:30,183 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dd8089e3/ca42545e84eb4181b5ae2382c4a14aa2 [2020-11-23 16:31:30,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-23 16:31:30,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-23 16:31:30,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-23 16:31:30,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-23 16:31:30,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-23 16:31:30,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:31:30" (1/1) ... [2020-11-23 16:31:30,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1acb9802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:31:30, skipping insertion in model container [2020-11-23 16:31:30,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:31:30" (1/1) ... [2020-11-23 16:31:30,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-23 16:31:30,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-23 16:31:30,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-23 16:31:30,547 INFO L203 MainTranslator]: Completed pre-run [2020-11-23 16:31:30,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-23 16:31:30,686 INFO L208 MainTranslator]: Completed translation [2020-11-23 16:31:30,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:31:30 WrapperNode [2020-11-23 16:31:30,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-23 16:31:30,689 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-23 16:31:30,691 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-23 16:31:30,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-23 16:31:30,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:31:30" (1/1) ... [2020-11-23 16:31:30,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:31:30" (1/1) ... [2020-11-23 16:31:30,796 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-23 16:31:30,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-23 16:31:30,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-23 16:31:30,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-23 16:31:30,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:31:30" (1/1) ... [2020-11-23 16:31:30,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:31:30" (1/1) ... [2020-11-23 16:31:30,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:31:30" (1/1) ... [2020-11-23 16:31:30,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:31:30" (1/1) ... [2020-11-23 16:31:30,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:31:30" (1/1) ... [2020-11-23 16:31:30,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:31:30" (1/1) ... [2020-11-23 16:31:30,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:31:30" (1/1) ... [2020-11-23 16:31:30,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-23 16:31:30,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-23 16:31:30,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-23 16:31:30,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-23 16:31:30,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:31:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-11-23 16:31:30,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-23 16:31:30,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-23 16:31:30,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-23 16:31:30,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-23 16:31:30,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-23 16:31:30,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-23 16:31:30,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-23 16:31:31,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-23 16:31:31,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-23 16:31:56,794 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-23 16:31:56,795 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-23 16:31:56,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:31:56 BoogieIcfgContainer [2020-11-23 16:31:56,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-23 16:31:56,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-23 16:31:56,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-23 16:31:56,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-23 16:31:56,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:31:30" (1/3) ... [2020-11-23 16:31:56,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37d16c80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:31:56, skipping insertion in model container [2020-11-23 16:31:56,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:31:30" (2/3) ... [2020-11-23 16:31:56,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37d16c80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:31:56, skipping insertion in model container [2020-11-23 16:31:56,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:31:56" (3/3) ... [2020-11-23 16:31:56,806 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0910b.c [2020-11-23 16:31:56,822 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-23 16:31:56,826 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-23 16:31:56,839 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-23 16:31:56,875 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-23 16:31:56,876 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-23 16:31:56,876 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-23 16:31:56,876 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-23 16:31:56,876 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-23 16:31:56,876 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-23 16:31:56,876 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-23 16:31:56,876 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-23 16:31:56,889 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-23 16:31:56,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-23 16:31:56,896 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 16:31:56,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 16:31:56,897 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 16:31:56,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 16:31:56,904 INFO L82 PathProgramCache]: Analyzing trace with hash -2110731690, now seen corresponding path program 1 times [2020-11-23 16:31:56,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-23 16:31:56,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822601076] [2020-11-23 16:31:56,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-11-23 16:31:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-23 16:31:57,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-23 16:31:58,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-23 16:31:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 16:31:58,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-23 16:31:58,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 16:31:58,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822601076] [2020-11-23 16:31:58,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-23 16:31:58,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-23 16:31:58,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055743600] [2020-11-23 16:31:58,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-23 16:31:58,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-23 16:31:58,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-23 16:31:58,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-23 16:31:58,062 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-23 16:31:58,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-23 16:31:58,083 INFO L93 Difference]: Finished difference Result 63 states and 101 transitions. [2020-11-23 16:31:58,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-23 16:31:58,085 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-11-23 16:31:58,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-23 16:31:58,095 INFO L225 Difference]: With dead ends: 63 [2020-11-23 16:31:58,095 INFO L226 Difference]: Without dead ends: 29 [2020-11-23 16:31:58,098 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 [2020-11-23 16:31:58,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-23 16:31:58,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-23 16:31:58,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-23 16:31:58,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2020-11-23 16:31:58,137 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 12 [2020-11-23 16:31:58,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-23 16:31:58,138 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2020-11-23 16:31:58,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-23 16:31:58,138 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2020-11-23 16:31:58,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-23 16:31:58,139 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 16:31:58,139 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 16:31:58,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-23 16:31:58,355 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 16:31:58,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 16:31:58,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1825265086, now seen corresponding path program 1 times [2020-11-23 16:31:58,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-23 16:31:58,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188166508] [2020-11-23 16:31:58,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-11-23 16:31:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-23 16:31:59,559 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-23 16:32:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-23 16:32:00,769 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-23 16:32:00,897 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-23 16:32:00,898 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-23 16:32:01,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-23 16:32:01,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:32:01 BoogieIcfgContainer [2020-11-23 16:32:01,171 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-23 16:32:01,172 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-23 16:32:01,172 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-23 16:32:01,173 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-23 16:32:01,173 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:31:56" (3/4) ... [2020-11-23 16:32:01,175 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-23 16:32:01,253 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-11-23 16:32:01,254 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-23 16:32:01,256 INFO L168 Benchmark]: Toolchain (without parser) took 31066.38 ms. Allocated memory is still 58.7 MB. Free memory was 35.6 MB in the beginning and 28.3 MB in the end (delta: 7.3 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2020-11-23 16:32:01,257 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 41.9 MB. Free memory was 19.9 MB in the beginning and 19.8 MB in the end (delta: 31.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:32:01,258 INFO L168 Benchmark]: CACSL2BoogieTranslator took 491.35 ms. Allocated memory is still 58.7 MB. Free memory was 34.9 MB in the beginning and 37.3 MB in the end (delta: -2.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-23 16:32:01,258 INFO L168 Benchmark]: Boogie Procedure Inliner took 107.11 ms. Allocated memory is still 58.7 MB. Free memory was 37.1 MB in the beginning and 35.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-23 16:32:01,259 INFO L168 Benchmark]: Boogie Preprocessor took 104.74 ms. Allocated memory is still 58.7 MB. Free memory was 35.0 MB in the beginning and 33.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-23 16:32:01,260 INFO L168 Benchmark]: RCFGBuilder took 25891.12 ms. Allocated memory is still 58.7 MB. Free memory was 33.1 MB in the beginning and 37.9 MB in the end (delta: -4.8 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2020-11-23 16:32:01,261 INFO L168 Benchmark]: TraceAbstraction took 4372.93 ms. Allocated memory is still 58.7 MB. Free memory was 37.6 MB in the beginning and 31.9 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2020-11-23 16:32:01,261 INFO L168 Benchmark]: Witness Printer took 81.43 ms. Allocated memory is still 58.7 MB. Free memory was 31.9 MB in the beginning and 28.3 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-23 16:32:01,266 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 41.9 MB. Free memory was 19.9 MB in the beginning and 19.8 MB in the end (delta: 31.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 491.35 ms. Allocated memory is still 58.7 MB. Free memory was 34.9 MB in the beginning and 37.3 MB in the end (delta: -2.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 107.11 ms. Allocated memory is still 58.7 MB. Free memory was 37.1 MB in the beginning and 35.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 104.74 ms. Allocated memory is still 58.7 MB. Free memory was 35.0 MB in the beginning and 33.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 25891.12 ms. Allocated memory is still 58.7 MB. Free memory was 33.1 MB in the beginning and 37.9 MB in the end (delta: -4.8 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4372.93 ms. Allocated memory is still 58.7 MB. Free memory was 37.6 MB in the beginning and 31.9 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. * Witness Printer took 81.43 ms. Allocated memory is still 58.7 MB. Free memory was 31.9 MB in the beginning and 28.3 MB in the end (delta: 3.6 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 = -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 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] [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_0910b.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: 4.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 242 SizeOfPredicates, 0 NumberOfNonLiveVariables, 50 ConjunctsInSsa, 1 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 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...