./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/sqrt_poly2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/sqrt_poly2.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b63905375af38d9971341930078b6c47230c38fd ............................................................................................................................................................................................................................................................. 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 -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/sqrt_poly2.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b63905375af38d9971341930078b6c47230c38fd ................................................................................................................................................................................................................................................................... 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 0.1.25-f470102 [2019-11-28 16:42:39,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:42:39,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:42:39,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:42:39,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:42:39,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:42:39,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:42:39,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:42:39,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:42:39,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:42:39,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:42:39,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:42:39,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:42:39,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:42:39,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:42:39,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:42:39,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:42:39,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:42:39,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:42:39,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:42:39,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:42:39,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:42:39,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:42:39,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:42:39,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:42:39,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:42:39,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:42:39,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:42:39,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:42:39,911 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:42:39,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:42:39,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:42:39,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:42:39,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:42:39,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:42:39,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:42:39,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:42:39,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:42:39,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:42:39,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:42:39,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:42:39,921 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:42:39,950 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:42:39,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:42:39,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:42:39,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:42:39,954 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:42:39,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:42:39,955 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:42:39,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:42:39,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:42:39,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:42:39,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:42:39,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:42:39,957 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:42:39,958 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:42:39,958 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:42:39,958 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:42:39,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:42:39,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:42:39,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:42:39,959 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:42:39,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:42:39,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:42:39,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:42:39,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:42:39,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:42:39,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:42:39,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:42:39,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:42:39,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:42:39,962 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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(__VERIFIER_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 -> b63905375af38d9971341930078b6c47230c38fd [2019-11-28 16:42:40,274 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:42:40,291 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:42:40,296 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:42:40,298 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:42:40,299 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:42:40,300 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/sqrt_poly2.c [2019-11-28 16:42:40,376 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c19d4505/6eaf08adf50f471cb646866c4c4facea/FLAG0645b3af2 [2019-11-28 16:42:40,888 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:42:40,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_poly2.c [2019-11-28 16:42:40,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c19d4505/6eaf08adf50f471cb646866c4c4facea/FLAG0645b3af2 [2019-11-28 16:42:41,238 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c19d4505/6eaf08adf50f471cb646866c4c4facea [2019-11-28 16:42:41,242 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:42:41,244 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:42:41,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:42:41,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:42:41,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:42:41,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:42:41" (1/1) ... [2019-11-28 16:42:41,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46934c81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:41, skipping insertion in model container [2019-11-28 16:42:41,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:42:41" (1/1) ... [2019-11-28 16:42:41,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:42:41,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:42:41,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:42:41,521 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:42:41,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:42:41,637 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:42:41,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:41 WrapperNode [2019-11-28 16:42:41,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:42:41,640 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:42:41,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:42:41,640 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:42:41,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:41" (1/1) ... [2019-11-28 16:42:41,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:41" (1/1) ... [2019-11-28 16:42:41,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:42:41,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:42:41,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:42:41,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:42:41,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:41" (1/1) ... [2019-11-28 16:42:41,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:41" (1/1) ... [2019-11-28 16:42:41,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:41" (1/1) ... [2019-11-28 16:42:41,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:41" (1/1) ... [2019-11-28 16:42:41,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:41" (1/1) ... [2019-11-28 16:42:41,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:41" (1/1) ... [2019-11-28 16:42:41,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:41" (1/1) ... [2019-11-28 16:42:41,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:42:41,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:42:41,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:42:41,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:42:41,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:41" (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 [2019-11-28 16:42:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:42:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-28 16:42:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 16:42:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-28 16:42:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:42:41,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:42:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 16:42:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:42:42,016 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:42:42,017 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-28 16:42:42,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:42:42 BoogieIcfgContainer [2019-11-28 16:42:42,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:42:42,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:42:42,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:42:42,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:42:42,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:42:41" (1/3) ... [2019-11-28 16:42:42,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@595c73ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:42:42, skipping insertion in model container [2019-11-28 16:42:42,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:41" (2/3) ... [2019-11-28 16:42:42,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@595c73ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:42:42, skipping insertion in model container [2019-11-28 16:42:42,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:42:42" (3/3) ... [2019-11-28 16:42:42,028 INFO L109 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2019-11-28 16:42:42,039 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:42:42,046 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:42:42,059 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:42:42,093 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:42:42,094 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:42:42,094 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:42:42,094 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:42:42,095 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:42:42,095 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:42:42,095 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:42:42,096 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:42:42,116 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-28 16:42:42,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 16:42:42,123 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:42:42,125 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:42:42,125 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:42:42,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:42:42,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965382, now seen corresponding path program 1 times [2019-11-28 16:42:42,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:42:42,144 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178471648] [2019-11-28 16:42:42,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:42:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:42:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:42:42,393 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:42:42,394 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:42:42,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:42:42 BoogieIcfgContainer [2019-11-28 16:42:42,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:42:42,426 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:42:42,426 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:42:42,426 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:42:42,427 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:42:42" (3/4) ... [2019-11-28 16:42:42,431 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 16:42:42,431 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:42:42,434 INFO L168 Benchmark]: Toolchain (without parser) took 1188.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 960.4 MB in the beginning and 1.0 GB in the end (delta: -88.1 MB). Peak memory consumption was 12.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:42:42,435 INFO L168 Benchmark]: CDTParser took 0.89 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:42:42,436 INFO L168 Benchmark]: CACSL2BoogieTranslator took 393.72 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -136.5 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-11-28 16:42:42,437 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.60 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-11-28 16:42:42,438 INFO L168 Benchmark]: Boogie Preprocessor took 26.66 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:42:42,439 INFO L168 Benchmark]: RCFGBuilder took 306.37 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2019-11-28 16:42:42,440 INFO L168 Benchmark]: TraceAbstraction took 405.35 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:42:42,441 INFO L168 Benchmark]: Witness Printer took 5.26 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:42:42,445 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.89 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 393.72 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -136.5 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 45.60 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.66 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 306.37 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 405.35 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Witness Printer took 5.26 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 9]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 33, overapproximation of someUnaryDOUBLEoperation at line 15, overapproximation of someBinaryArithmeticDOUBLEoperation at line 46, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryDOUBLEComparisonOperation at line 60. Possible FailurePath: [L12] double C0 = 1.414213538; [L13] double C1 = 0.229761391; [L14] double C2 = 1.296735525; [L15] double C3 = -0.901098370; [L16] double C4 = 0.493553400; [L17] double C5 = -0.118958666; VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L53] double x,y; [L55] x = __VERIFIER_nondet_double() [L26] union u x; [L27] double r; [L28] int exp; [L30] x.d = a [L32] EXPR x.i[0] [L32] exp = (x.i[0] & 0x7FF00000) >> 20 [L33] EXPR x.i[0] [L33] x.i[0] = (x.i[0] & 0x800FFFFF) | 0x3FF00000 [L34] EXPR x.d [L34] r = x.d * 0.5 [L36] r = C1+C2+(C3+(C4+C5*r)*r)*r VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L38] COND TRUE exp % 2 == 0 [L39] exp++ VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L45] x.i[0] = (exp/2 + 511) << 20 [L46] EXPR x.d [L46] r = r * x.d [L48] return r; [L48] return r; VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L58] y = sqrt_custom(x) [L9] COND TRUE !(cond) VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L9] __VERIFIER_error() VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-11-28 16:42:44,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:42:44,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:42:44,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:42:44,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:42:44,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:42:44,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:42:44,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:42:44,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:42:44,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:42:44,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:42:44,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:42:44,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:42:44,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:42:44,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:42:44,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:42:44,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:42:44,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:42:44,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:42:44,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:42:44,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:42:44,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:42:44,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:42:44,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:42:44,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:42:44,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:42:44,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:42:44,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:42:44,422 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:42:44,423 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:42:44,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:42:44,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:42:44,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:42:44,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:42:44,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:42:44,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:42:44,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:42:44,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:42:44,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:42:44,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:42:44,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:42:44,431 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-28 16:42:44,453 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:42:44,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:42:44,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:42:44,456 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:42:44,456 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:42:44,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:42:44,457 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:42:44,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:42:44,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:42:44,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:42:44,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:42:44,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:42:44,458 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 16:42:44,458 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 16:42:44,459 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:42:44,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:42:44,459 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:42:44,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:42:44,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:42:44,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:42:44,460 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:42:44,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:42:44,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:42:44,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:42:44,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:42:44,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:42:44,462 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 16:42:44,462 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 16:42:44,463 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:42:44,463 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:42:44,463 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 16:42:44,463 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /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(__VERIFIER_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 -> b63905375af38d9971341930078b6c47230c38fd [2019-11-28 16:42:44,775 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:42:44,789 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:42:44,793 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:42:44,794 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:42:44,795 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:42:44,796 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/sqrt_poly2.c [2019-11-28 16:42:44,869 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4f3bd51b/27f5e1a6fcde4fbc98ee62833550ad9c/FLAG2a2b6e6e9 [2019-11-28 16:42:45,355 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:42:45,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_poly2.c [2019-11-28 16:42:45,366 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4f3bd51b/27f5e1a6fcde4fbc98ee62833550ad9c/FLAG2a2b6e6e9 [2019-11-28 16:42:45,694 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4f3bd51b/27f5e1a6fcde4fbc98ee62833550ad9c [2019-11-28 16:42:45,698 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:42:45,702 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:42:45,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:42:45,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:42:45,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:42:45,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:42:45" (1/1) ... [2019-11-28 16:42:45,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@407e02d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:45, skipping insertion in model container [2019-11-28 16:42:45,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:42:45" (1/1) ... [2019-11-28 16:42:45,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:42:45,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:42:45,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:42:46,010 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:42:46,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:42:46,127 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:42:46,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:46 WrapperNode [2019-11-28 16:42:46,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:42:46,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:42:46,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:42:46,129 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:42:46,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:46" (1/1) ... [2019-11-28 16:42:46,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:46" (1/1) ... [2019-11-28 16:42:46,176 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:42:46,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:42:46,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:42:46,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:42:46,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:46" (1/1) ... [2019-11-28 16:42:46,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:46" (1/1) ... [2019-11-28 16:42:46,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:46" (1/1) ... [2019-11-28 16:42:46,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:46" (1/1) ... [2019-11-28 16:42:46,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:46" (1/1) ... [2019-11-28 16:42:46,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:46" (1/1) ... [2019-11-28 16:42:46,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:46" (1/1) ... [2019-11-28 16:42:46,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:42:46,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:42:46,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:42:46,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:42:46,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:46" (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 [2019-11-28 16:42:46,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-11-28 16:42:46,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-28 16:42:46,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:42:46,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-28 16:42:46,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:42:46,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:42:46,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:42:46,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-28 16:42:49,891 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:42:49,891 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-28 16:42:49,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:42:49 BoogieIcfgContainer [2019-11-28 16:42:49,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:42:49,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:42:49,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:42:49,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:42:49,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:42:45" (1/3) ... [2019-11-28 16:42:49,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a5b8fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:42:49, skipping insertion in model container [2019-11-28 16:42:49,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:46" (2/3) ... [2019-11-28 16:42:49,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a5b8fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:42:49, skipping insertion in model container [2019-11-28 16:42:49,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:42:49" (3/3) ... [2019-11-28 16:42:49,901 INFO L109 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2019-11-28 16:42:49,911 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:42:49,919 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:42:49,928 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:42:49,947 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:42:49,948 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:42:49,948 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:42:49,948 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:42:49,948 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:42:49,949 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:42:49,949 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:42:49,949 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:42:49,960 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-28 16:42:49,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 16:42:49,966 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:42:49,967 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:42:49,968 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:42:49,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:42:49,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965382, now seen corresponding path program 1 times [2019-11-28 16:42:49,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:42:49,983 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930337404] [2019-11-28 16:42:49,983 INFO L94 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 [2019-11-28 16:42:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:42:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:42:58,814 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-28 16:42:58,815 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:42:59,016 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 16:42:59,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:42:59 BoogieIcfgContainer [2019-11-28 16:42:59,055 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:42:59,056 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:42:59,056 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:42:59,056 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:42:59,057 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:42:49" (3/4) ... [2019-11-28 16:42:59,059 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 16:42:59,115 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:42:59,116 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:42:59,119 INFO L168 Benchmark]: Toolchain (without parser) took 13417.79 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 960.4 MB in the beginning and 1.0 GB in the end (delta: -82.1 MB). Peak memory consumption was 31.2 MB. Max. memory is 11.5 GB. [2019-11-28 16:42:59,119 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:42:59,120 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.74 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -142.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-11-28 16:42:59,121 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:42:59,122 INFO L168 Benchmark]: Boogie Preprocessor took 33.07 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:42:59,123 INFO L168 Benchmark]: RCFGBuilder took 3681.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:42:59,124 INFO L168 Benchmark]: TraceAbstraction took 9161.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:42:59,125 INFO L168 Benchmark]: Witness Printer took 60.44 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:42:59,129 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 421.74 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -142.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.07 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 3681.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9161.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Witness Printer took 60.44 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 9]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] double C0 = 1.414213538; [L13] double C1 = 0.229761391; [L14] double C2 = 1.296735525; [L15] double C3 = -0.901098370; [L16] double C4 = 0.493553400; [L17] double C5 = -0.118958666; VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L53] double x,y; [L55] x = __VERIFIER_nondet_double() [L26] union u x; [L27] double r; [L28] int exp; [L30] x.d = a [L32] EXPR x.i[0] [L32] exp = (x.i[0] & 0x7FF00000) >> 20 [L33] EXPR x.i[0] [L33] x.i[0] = (x.i[0] & 0x800FFFFF) | 0x3FF00000 [L34] EXPR x.d [L34] r = x.d * 0.5 [L36] r = C1+C2+(C3+(C4+C5*r)*r)*r VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L38] COND TRUE exp % 2 == 0 [L39] exp++ VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L45] x.i[0] = (exp/2 + 511) << 20 [L46] EXPR x.d [L46] r = r * x.d [L48] return r; [L48] return r; VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L58] y = sqrt_custom(x) [L9] COND TRUE !(cond) VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L9] __VERIFIER_error() VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Result: UNSAFE, OverallTime: 9.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 4.9s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...