./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c -s /tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b5a9a5f04ffebcbeddfcdcc0054cf362a3fa4d7b .............................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c -s /tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b5a9a5f04ffebcbeddfcdcc0054cf362a3fa4d7b ............................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:37:31,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:37:31,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:37:31,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:37:31,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:37:31,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:37:31,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:37:31,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:37:31,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:37:31,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:37:31,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:37:31,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:37:31,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:37:31,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:37:31,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:37:31,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:37:31,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:37:31,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:37:31,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:37:31,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:37:31,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:37:31,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:37:31,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:37:31,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:37:31,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:37:31,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:37:31,299 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:37:31,306 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:37:31,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:37:31,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:37:31,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:37:31,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:37:31,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:37:31,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:37:31,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:37:31,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:37:31,315 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:37:31,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:37:31,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:37:31,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:37:31,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:37:31,320 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 01:37:31,358 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:37:31,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:37:31,360 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:37:31,360 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:37:31,360 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:37:31,361 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:37:31,361 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 01:37:31,361 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:37:31,361 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:37:31,361 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 01:37:31,362 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 01:37:31,363 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:37:31,363 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 01:37:31,363 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 01:37:31,363 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 01:37:31,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:37:31,364 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:37:31,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:37:31,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:37:31,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:37:31,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:37:31,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:37:31,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:37:31,365 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:37:31,365 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:37:31,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:37:31,366 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:37:31,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:37:31,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:37:31,368 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:37:31,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:37:31,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:37:31,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:37:31,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:37:31,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:37:31,369 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 01:37:31,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:37:31,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:37:31,370 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:37:31,370 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:37:31,370 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5a9a5f04ffebcbeddfcdcc0054cf362a3fa4d7b [2020-11-30 01:37:31,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:37:31,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:37:31,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:37:31,650 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:37:31,651 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:37:31,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan/../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2020-11-30 01:37:31,734 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan/data/2127d3a56/e7e2d8cc21bb4cf0b3f81a7eda1cfefc/FLAGa277294d7 [2020-11-30 01:37:32,200 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:37:32,201 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2020-11-30 01:37:32,207 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan/data/2127d3a56/e7e2d8cc21bb4cf0b3f81a7eda1cfefc/FLAGa277294d7 [2020-11-30 01:37:32,591 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan/data/2127d3a56/e7e2d8cc21bb4cf0b3f81a7eda1cfefc [2020-11-30 01:37:32,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:37:32,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:37:32,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:37:32,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:37:32,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:37:32,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:37:32" (1/1) ... [2020-11-30 01:37:32,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d507343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:37:32, skipping insertion in model container [2020-11-30 01:37:32,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:37:32" (1/1) ... [2020-11-30 01:37:32,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:37:32,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:37:32,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:37:32,854 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:37:32,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:37:32,899 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:37:32,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:37:32 WrapperNode [2020-11-30 01:37:32,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:37:32,903 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:37:32,903 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:37:32,903 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:37:32,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:37:32" (1/1) ... [2020-11-30 01:37:32,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:37:32" (1/1) ... [2020-11-30 01:37:32,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:37:32,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:37:32,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:37:32,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:37:32,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:37:32" (1/1) ... [2020-11-30 01:37:32,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:37:32" (1/1) ... [2020-11-30 01:37:32,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:37:32" (1/1) ... [2020-11-30 01:37:32,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:37:32" (1/1) ... [2020-11-30 01:37:32,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:37:32" (1/1) ... [2020-11-30 01:37:32,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:37:32" (1/1) ... [2020-11-30 01:37:32,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:37:32" (1/1) ... [2020-11-30 01:37:32,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:37:32,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:37:32,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:37:32,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:37:33,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:37:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:37:33,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:37:33,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:37:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-30 01:37:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 01:37:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 01:37:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:37:33,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:37:33,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 01:37:33,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:37:33,645 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:37:33,646 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-30 01:37:33,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:37:33 BoogieIcfgContainer [2020-11-30 01:37:33,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:37:33,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:37:33,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:37:33,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:37:33,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:37:32" (1/3) ... [2020-11-30 01:37:33,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df02b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:37:33, skipping insertion in model container [2020-11-30 01:37:33,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:37:32" (2/3) ... [2020-11-30 01:37:33,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df02b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:37:33, skipping insertion in model container [2020-11-30 01:37:33,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:37:33" (3/3) ... [2020-11-30 01:37:33,657 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_sqrt_Quake.c [2020-11-30 01:37:33,674 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:37:33,679 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:37:33,691 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:37:33,712 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:37:33,713 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:37:33,713 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:37:33,713 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:37:33,713 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:37:33,714 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:37:33,714 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:37:33,714 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:37:33,726 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2020-11-30 01:37:33,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-30 01:37:33,731 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:37:33,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-30 01:37:33,732 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:37:33,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:37:33,738 INFO L82 PathProgramCache]: Analyzing trace with hash 63876, now seen corresponding path program 1 times [2020-11-30 01:37:33,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:37:33,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342157229] [2020-11-30 01:37:33,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:37:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:37:33,872 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:37:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:37:33,906 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:37:33,940 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 01:37:33,941 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:37:33,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:37:33,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:37:33 BoogieIcfgContainer [2020-11-30 01:37:33,969 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:37:33,971 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:37:33,972 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:37:33,973 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:37:33,973 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:37:33" (3/4) ... [2020-11-30 01:37:33,978 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:37:33,978 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:37:33,982 INFO L168 Benchmark]: Toolchain (without parser) took 1383.92 ms. Allocated memory is still 136.3 MB. Free memory was 110.3 MB in the beginning and 74.3 MB in the end (delta: 36.0 MB). Peak memory consumption was 34.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:37:33,983 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 88.1 MB. Free memory is still 48.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:37:33,985 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.82 ms. Allocated memory is still 136.3 MB. Free memory was 110.1 MB in the beginning and 112.8 MB in the end (delta: -2.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:37:33,986 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.73 ms. Allocated memory is still 136.3 MB. Free memory was 112.8 MB in the beginning and 111.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:37:33,987 INFO L168 Benchmark]: Boogie Preprocessor took 49.43 ms. Allocated memory is still 136.3 MB. Free memory was 111.2 MB in the beginning and 110.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:37:33,989 INFO L168 Benchmark]: RCFGBuilder took 651.11 ms. Allocated memory is still 136.3 MB. Free memory was 110.0 MB in the beginning and 87.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:37:33,990 INFO L168 Benchmark]: TraceAbstraction took 320.04 ms. Allocated memory is still 136.3 MB. Free memory was 87.6 MB in the beginning and 74.6 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:37:33,991 INFO L168 Benchmark]: Witness Printer took 6.78 ms. Allocated memory is still 136.3 MB. Free memory was 74.6 MB in the beginning and 74.3 MB in the end (delta: 279.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:37:34,001 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 88.1 MB. Free memory is still 48.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 304.82 ms. Allocated memory is still 136.3 MB. Free memory was 110.1 MB in the beginning and 112.8 MB in the end (delta: -2.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.73 ms. Allocated memory is still 136.3 MB. Free memory was 112.8 MB in the beginning and 111.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.43 ms. Allocated memory is still 136.3 MB. Free memory was 111.2 MB in the beginning and 110.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 651.11 ms. Allocated memory is still 136.3 MB. Free memory was 110.0 MB in the beginning and 87.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 320.04 ms. Allocated memory is still 136.3 MB. Free memory was 87.6 MB in the beginning and 74.6 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 6.78 ms. Allocated memory is still 136.3 MB. Free memory was 74.6 MB in the beginning and 74.3 MB in the end (delta: 279.1 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 someBinaryFLOATComparisonOperation at line 48, overapproximation of someBinaryDOUBLEComparisonOperation at line 52, overapproximation of someBinaryArithmeticFLOAToperation at line 22. Possible FailurePath: [L45] float a,r; [L47] a = __VERIFIER_nondet_float() [L11] COND FALSE !(!cond) [L22] float xhalf = 0.5f*x; [L23] union float_int i; [L24] i.f = x [L25] EXPR i.i [L25] i.i = 0x5f3759df - (i.i>>1) [L26] EXPR i.f [L26] x = i.f [L27] x = x*(1.5f-xhalf*x*x) [L28] return x; [L28] return x; [L50] r = InvSqrt(a) [L13] COND TRUE !(cond) [L3] __assert_fail("0", "inv_sqrt_Quake.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred 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, 3 NumberOfCodeBlocks, 3 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:37:36,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:37:36,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:37:36,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:37:36,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:37:36,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:37:36,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:37:36,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:37:36,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:37:36,687 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:37:36,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:37:36,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:37:36,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:37:36,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:37:36,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:37:36,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:37:36,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:37:36,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:37:36,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:37:36,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:37:36,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:37:36,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:37:36,729 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:37:36,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:37:36,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:37:36,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:37:36,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:37:36,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:37:36,745 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:37:36,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:37:36,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:37:36,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:37:36,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:37:36,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:37:36,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:37:36,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:37:36,752 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:37:36,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:37:36,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:37:36,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:37:36,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:37:36,756 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-30 01:37:36,801 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:37:36,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:37:36,804 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:37:36,804 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:37:36,804 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:37:36,805 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:37:36,805 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:37:36,805 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:37:36,805 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:37:36,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:37:36,808 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:37:36,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:37:36,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:37:36,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:37:36,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:37:36,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:37:36,810 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:37:36,810 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 01:37:36,810 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 01:37:36,811 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:37:36,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:37:36,811 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:37:36,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:37:36,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:37:36,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:37:36,812 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:37:36,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:37:36,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:37:36,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:37:36,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:37:36,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:37:36,814 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 01:37:36,814 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 01:37:36,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:37:36,814 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:37:36,815 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:37:36,815 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5a9a5f04ffebcbeddfcdcc0054cf362a3fa4d7b [2020-11-30 01:37:37,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:37:37,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:37:37,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:37:37,239 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:37:37,239 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:37:37,240 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan/../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2020-11-30 01:37:37,316 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan/data/8c916e72e/7ec732b68a2b40108fbf0e57cd5d925d/FLAG82de944b6 [2020-11-30 01:37:37,897 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:37:37,897 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2020-11-30 01:37:37,905 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan/data/8c916e72e/7ec732b68a2b40108fbf0e57cd5d925d/FLAG82de944b6 [2020-11-30 01:37:38,266 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan/data/8c916e72e/7ec732b68a2b40108fbf0e57cd5d925d [2020-11-30 01:37:38,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:37:38,283 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:37:38,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:37:38,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:37:38,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:37:38,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:37:38" (1/1) ... [2020-11-30 01:37:38,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c5ae898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:37:38, skipping insertion in model container [2020-11-30 01:37:38,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:37:38" (1/1) ... [2020-11-30 01:37:38,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:37:38,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:37:38,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:37:38,511 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:37:38,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:37:38,551 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:37:38,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:37:38 WrapperNode [2020-11-30 01:37:38,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:37:38,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:37:38,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:37:38,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:37:38,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:37:38" (1/1) ... [2020-11-30 01:37:38,576 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:37:38" (1/1) ... [2020-11-30 01:37:38,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:37:38,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:37:38,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:37:38,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:37:38,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:37:38" (1/1) ... [2020-11-30 01:37:38,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:37:38" (1/1) ... [2020-11-30 01:37:38,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:37:38" (1/1) ... [2020-11-30 01:37:38,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:37:38" (1/1) ... [2020-11-30 01:37:38,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:37:38" (1/1) ... [2020-11-30 01:37:38,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:37:38" (1/1) ... [2020-11-30 01:37:38,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:37:38" (1/1) ... [2020-11-30 01:37:38,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:37:38,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:37:38,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:37:38,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:37:38,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:37:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:37:38,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 01:37:38,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:37:38,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-30 01:37:38,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 01:37:38,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:37:38,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:37:38,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-30 01:37:38,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:37:38,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-30 01:37:41,146 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:37:41,147 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-30 01:37:41,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:37:41 BoogieIcfgContainer [2020-11-30 01:37:41,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:37:41,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:37:41,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:37:41,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:37:41,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:37:38" (1/3) ... [2020-11-30 01:37:41,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e8e33a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:37:41, skipping insertion in model container [2020-11-30 01:37:41,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:37:38" (2/3) ... [2020-11-30 01:37:41,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e8e33a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:37:41, skipping insertion in model container [2020-11-30 01:37:41,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:37:41" (3/3) ... [2020-11-30 01:37:41,157 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_sqrt_Quake.c [2020-11-30 01:37:41,168 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:37:41,172 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:37:41,185 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:37:41,209 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:37:41,209 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:37:41,210 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:37:41,210 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:37:41,210 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:37:41,210 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:37:41,210 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:37:41,211 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:37:41,223 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-30 01:37:41,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 01:37:41,226 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:37:41,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:37:41,227 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:37:41,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:37:41,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965382, now seen corresponding path program 1 times [2020-11-30 01:37:41,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:37:41,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470936507] [2020-11-30 01:37:41,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-30 01:37:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:37:41,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 01:37:41,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:37:41,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:37:41,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:37:41,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:37:41,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470936507] [2020-11-30 01:37:41,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:37:41,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 01:37:41,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832460666] [2020-11-30 01:37:41,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:37:41,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:37:41,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:37:41,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:37:41,642 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-11-30 01:37:41,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:37:41,655 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-11-30 01:37:41,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:37:41,656 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-30 01:37:41,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:37:41,664 INFO L225 Difference]: With dead ends: 22 [2020-11-30 01:37:41,664 INFO L226 Difference]: Without dead ends: 8 [2020-11-30 01:37:41,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:37:41,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-30 01:37:41,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-30 01:37:41,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-30 01:37:41,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2020-11-30 01:37:41,696 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2020-11-30 01:37:41,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:37:41,697 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2020-11-30 01:37:41,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:37:41,697 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2020-11-30 01:37:41,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 01:37:41,698 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:37:41,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:37:41,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 01:37:41,913 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:37:41,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:37:41,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1806812424, now seen corresponding path program 1 times [2020-11-30 01:37:41,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:37:41,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489788822] [2020-11-30 01:37:41,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 01:37:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:37:43,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-30 01:37:43,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:37:43,882 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:37:45,972 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))) (and (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 100.0)) (fp.geq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 10.0))) (= (let ((.cse1 (let ((.cse2 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul c_currentRoundingMode .cse1 (fp.sub c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) .cse0) .cse1) .cse1)))) |c_ULTIMATE.start_InvSqrt_#res|)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2020-11-30 01:37:45,985 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 01:37:48,041 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 01:38:02,457 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (or (and (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse1 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))) (and (not (fp.geq (let ((.cse0 (let ((.cse2 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul roundNearestTiesToEven .cse0 (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) .cse1) .cse0) .cse0)))) (_ +zero 8 24))) (fp.geq .cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 10.0))) (fp.leq .cse1 ((_ to_fp 8 24) roundNearestTiesToEven 100.0))))) .cse3) (and (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse5 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))) (let ((.cse4 (let ((.cse6 (let ((.cse7 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse7) ((_ extract 30 23) .cse7) ((_ extract 22 0) .cse7))))) (fp.mul roundNearestTiesToEven .cse6 (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) .cse5) .cse6) .cse6)))))) (and (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven .cse4) ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (fp.geq .cse5 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 10.0))) (fp.geq .cse4 (_ +zero 8 24)) (fp.leq .cse5 ((_ to_fp 8 24) roundNearestTiesToEven 100.0))))))) (and .cse3 (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse8 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))) (and (fp.geq .cse8 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 10.0))) (not (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven (let ((.cse9 (let ((.cse10 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse10) ((_ extract 30 23) .cse10) ((_ extract 22 0) .cse10))))) (fp.mul roundNearestTiesToEven .cse9 (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) .cse8) .cse9) .cse9))))) ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (fp.leq .cse8 ((_ to_fp 8 24) roundNearestTiesToEven 100.0)))))))) is different from false [2020-11-30 01:38:12,703 WARN L838 $PredicateComparison]: unable to prove that (or (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse1 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))) (and (not (fp.geq (let ((.cse0 (let ((.cse2 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul roundNearestTiesToEven .cse0 (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) .cse1) .cse0) .cse0)))) (_ +zero 8 24))) (fp.geq .cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 10.0))) (fp.leq .cse1 ((_ to_fp 8 24) roundNearestTiesToEven 100.0))))) (exists ((v_prenex_1 (_ BitVec 32))) (let ((.cse4 (fp ((_ extract 31 31) v_prenex_1) ((_ extract 30 23) v_prenex_1) ((_ extract 22 0) v_prenex_1)))) (and (not (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven (let ((.cse3 (let ((.cse5 (bvadd (bvneg (bvashr v_prenex_1 (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))))) (fp.mul roundNearestTiesToEven .cse3 (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) .cse4) .cse3) .cse3))))) ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (fp.leq .cse4 ((_ to_fp 8 24) roundNearestTiesToEven 100.0)) (fp.geq .cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 10.0))))))) is different from false [2020-11-30 01:38:14,783 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse1 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))) (and (not (fp.geq (let ((.cse0 (let ((.cse2 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul roundNearestTiesToEven .cse0 (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) .cse1) .cse0) .cse0)))) (_ +zero 8 24))) (fp.geq .cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 10.0))) (fp.leq .cse1 ((_ to_fp 8 24) roundNearestTiesToEven 100.0))))) (exists ((v_prenex_1 (_ BitVec 32))) (let ((.cse4 (fp ((_ extract 31 31) v_prenex_1) ((_ extract 30 23) v_prenex_1) ((_ extract 22 0) v_prenex_1)))) (and (not (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven (let ((.cse3 (let ((.cse5 (bvadd (bvneg (bvashr v_prenex_1 (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))))) (fp.mul roundNearestTiesToEven .cse3 (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) .cse4) .cse3) .cse3))))) ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (fp.leq .cse4 ((_ to_fp 8 24) roundNearestTiesToEven 100.0)) (fp.geq .cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 10.0))))))) is different from true [2020-11-30 01:38:14,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:38:14,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:38:15,396 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-11-30 01:38:15,400 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:38:23,425 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-11-30 01:38:23,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489788822] [2020-11-30 01:38:23,427 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") [2020-11-30 01:38:23,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [503382501] [2020-11-30 01:38:23,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 01:38:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:38:24,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-30 01:38:24,539 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@3b375638 [2020-11-30 01:38:24,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551864938] [2020-11-30 01:38:24,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_746fdbeb-ba16-4d83-bb0e-ca217ac8511a/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:39:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:39:01,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 01:39:01,692 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@3b375638 [2020-11-30 01:39:01,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:39:01,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-11-30 01:39:01,692 ERROR L205 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2020-11-30 01:39:01,692 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:39:02,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk,3 mathsat -unsat_core_generation=3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:39:02,311 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-11-30 01:39:02,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:39:02 BoogieIcfgContainer [2020-11-30 01:39:02,311 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:39:02,312 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:39:02,312 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:39:02,313 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:39:02,313 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:37:41" (3/4) ... [2020-11-30 01:39:02,317 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:39:02,317 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:39:02,319 INFO L168 Benchmark]: Toolchain (without parser) took 84034.40 ms. Allocated memory was 48.2 MB in the beginning and 69.2 MB in the end (delta: 21.0 MB). Free memory was 25.1 MB in the beginning and 46.1 MB in the end (delta: -21.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:39:02,319 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 48.2 MB. Free memory was 30.2 MB in the beginning and 30.2 MB in the end (delta: 25.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:39:02,320 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.89 ms. Allocated memory is still 48.2 MB. Free memory was 24.9 MB in the beginning and 26.1 MB in the end (delta: -1.2 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:39:02,322 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.36 ms. Allocated memory was 48.2 MB in the beginning and 69.2 MB in the end (delta: 21.0 MB). Free memory was 26.1 MB in the beginning and 52.3 MB in the end (delta: -26.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:39:02,323 INFO L168 Benchmark]: Boogie Preprocessor took 60.31 ms. Allocated memory is still 69.2 MB. Free memory was 52.3 MB in the beginning and 50.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:39:02,324 INFO L168 Benchmark]: RCFGBuilder took 2474.34 ms. Allocated memory is still 69.2 MB. Free memory was 50.9 MB in the beginning and 37.4 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:39:02,324 INFO L168 Benchmark]: TraceAbstraction took 81161.45 ms. Allocated memory is still 69.2 MB. Free memory was 36.8 MB in the beginning and 46.8 MB in the end (delta: -9.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:39:02,325 INFO L168 Benchmark]: Witness Printer took 4.83 ms. Allocated memory is still 69.2 MB. Free memory was 46.6 MB in the beginning and 46.1 MB in the end (delta: 448.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:39:02,330 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 48.2 MB. Free memory was 30.2 MB in the beginning and 30.2 MB in the end (delta: 25.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 266.89 ms. Allocated memory is still 48.2 MB. Free memory was 24.9 MB in the beginning and 26.1 MB in the end (delta: -1.2 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.36 ms. Allocated memory was 48.2 MB in the beginning and 69.2 MB in the end (delta: 21.0 MB). Free memory was 26.1 MB in the beginning and 52.3 MB in the end (delta: -26.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.31 ms. Allocated memory is still 69.2 MB. Free memory was 52.3 MB in the beginning and 50.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2474.34 ms. Allocated memory is still 69.2 MB. Free memory was 50.9 MB in the beginning and 37.4 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 81161.45 ms. Allocated memory is still 69.2 MB. Free memory was 36.8 MB in the beginning and 46.8 MB in the end (delta: -9.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.83 ms. Allocated memory is still 69.2 MB. Free memory was 46.6 MB in the beginning and 46.1 MB in the end (delta: 448.0 kB). Peak memory consumption was 2.1 MB. 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: unable to decide satisfiability of path constraint. Possible FailurePath: [L45] float a,r; [L47] a = __VERIFIER_nondet_float() [L11] COND FALSE !(!cond) [L22] float xhalf = 0.5f*x; [L23] union float_int i; [L24] i.f = x [L25] EXPR i.i [L25] i.i = 0x5f3759df - (i.i>>1) [L26] EXPR i.f [L26] x = i.f [L27] x = x*(1.5f-xhalf*x*x) [L28] return x; [L28] return x; [L50] r = InvSqrt(a) [L13] COND TRUE !(cond) [L3] __assert_fail("0", "inv_sqrt_Quake.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 81.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 SizeOfPredicates, 0 NumberOfNonLiveVariables, 43 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...