./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 ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1f9d99a1e914bb5db4e356a6920ef9cb10f38df5cae5223ce35a4e418e6502dd --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-27 23:25:35,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-27 23:25:35,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-27 23:25:35,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-27 23:25:35,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-27 23:25:35,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-27 23:25:35,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-27 23:25:35,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-27 23:25:35,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-27 23:25:35,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-27 23:25:35,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-27 23:25:35,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-27 23:25:35,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-27 23:25:35,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-27 23:25:35,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-27 23:25:35,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-27 23:25:35,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-27 23:25:35,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-27 23:25:35,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-27 23:25:35,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-27 23:25:35,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-27 23:25:35,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-27 23:25:35,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-27 23:25:35,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-27 23:25:35,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-27 23:25:35,395 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-27 23:25:35,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-27 23:25:35,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-27 23:25:35,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-27 23:25:35,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-27 23:25:35,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-27 23:25:35,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-27 23:25:35,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-27 23:25:35,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-27 23:25:35,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-27 23:25:35,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-27 23:25:35,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-27 23:25:35,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-27 23:25:35,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-27 23:25:35,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-27 23:25:35,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-27 23:25:35,409 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-27 23:25:35,423 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-27 23:25:35,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-27 23:25:35,423 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-27 23:25:35,424 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-27 23:25:35,424 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-27 23:25:35,424 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-27 23:25:35,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-27 23:25:35,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-27 23:25:35,425 INFO L138 SettingsManager]: * Use SBE=true [2021-12-27 23:25:35,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-27 23:25:35,425 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-27 23:25:35,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-27 23:25:35,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-27 23:25:35,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-27 23:25:35,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-27 23:25:35,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-27 23:25:35,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-27 23:25:35,426 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-27 23:25:35,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-27 23:25:35,427 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-27 23:25:35,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-27 23:25:35,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-27 23:25:35,427 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-27 23:25:35,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-27 23:25:35,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 23:25:35,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-27 23:25:35,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-27 23:25:35,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-27 23:25:35,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-27 23:25:35,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-27 23:25:35,428 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-27 23:25:35,429 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-27 23:25:35,429 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-27 23:25:35,429 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f9d99a1e914bb5db4e356a6920ef9cb10f38df5cae5223ce35a4e418e6502dd [2021-12-27 23:25:35,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-27 23:25:35,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-27 23:25:35,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-27 23:25:35,661 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-27 23:25:35,662 INFO L275 PluginConnector]: CDTParser initialized [2021-12-27 23:25:35,663 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2021-12-27 23:25:35,702 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b353b942/9671c8be310948e09e41a71e5b996f24/FLAGce6e38b71 [2021-12-27 23:25:36,014 INFO L306 CDTParser]: Found 1 translation units. [2021-12-27 23:25:36,015 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2021-12-27 23:25:36,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b353b942/9671c8be310948e09e41a71e5b996f24/FLAGce6e38b71 [2021-12-27 23:25:36,455 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b353b942/9671c8be310948e09e41a71e5b996f24 [2021-12-27 23:25:36,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-27 23:25:36,461 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-27 23:25:36,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-27 23:25:36,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-27 23:25:36,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-27 23:25:36,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:25:36" (1/1) ... [2021-12-27 23:25:36,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4379611b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:25:36, skipping insertion in model container [2021-12-27 23:25:36,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:25:36" (1/1) ... [2021-12-27 23:25:36,492 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-27 23:25:36,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-27 23:25:36,603 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c[585,598] [2021-12-27 23:25:36,616 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 23:25:36,621 INFO L203 MainTranslator]: Completed pre-run [2021-12-27 23:25:36,631 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c[585,598] [2021-12-27 23:25:36,640 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 23:25:36,656 INFO L208 MainTranslator]: Completed translation [2021-12-27 23:25:36,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:25:36 WrapperNode [2021-12-27 23:25:36,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-27 23:25:36,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-27 23:25:36,668 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-27 23:25:36,668 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-27 23:25:36,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:25:36" (1/1) ... [2021-12-27 23:25:36,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:25:36" (1/1) ... [2021-12-27 23:25:36,716 INFO L137 Inliner]: procedures = 18, calls = 17, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 47 [2021-12-27 23:25:36,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-27 23:25:36,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-27 23:25:36,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-27 23:25:36,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-27 23:25:36,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:25:36" (1/1) ... [2021-12-27 23:25:36,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:25:36" (1/1) ... [2021-12-27 23:25:36,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:25:36" (1/1) ... [2021-12-27 23:25:36,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:25:36" (1/1) ... [2021-12-27 23:25:36,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:25:36" (1/1) ... [2021-12-27 23:25:36,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:25:36" (1/1) ... [2021-12-27 23:25:36,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:25:36" (1/1) ... [2021-12-27 23:25:36,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-27 23:25:36,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-27 23:25:36,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-27 23:25:36,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-27 23:25:36,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:25:36" (1/1) ... [2021-12-27 23:25:36,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 23:25:36,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 23:25:36,806 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-27 23:25:36,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-27 23:25:36,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-27 23:25:36,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-27 23:25:36,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-27 23:25:36,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-27 23:25:36,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-27 23:25:36,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-27 23:25:36,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-27 23:25:36,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-27 23:25:36,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-27 23:25:36,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-27 23:25:36,904 INFO L234 CfgBuilder]: Building ICFG [2021-12-27 23:25:36,905 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-27 23:25:36,985 INFO L275 CfgBuilder]: Performing block encoding [2021-12-27 23:25:36,989 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-27 23:25:36,989 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-27 23:25:36,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:25:36 BoogieIcfgContainer [2021-12-27 23:25:36,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-27 23:25:36,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-27 23:25:36,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-27 23:25:36,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-27 23:25:36,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 11:25:36" (1/3) ... [2021-12-27 23:25:36,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b17fe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:25:36, skipping insertion in model container [2021-12-27 23:25:36,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:25:36" (2/3) ... [2021-12-27 23:25:36,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b17fe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:25:36, skipping insertion in model container [2021-12-27 23:25:36,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:25:36" (3/3) ... [2021-12-27 23:25:36,996 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_sqrt_Quake.c [2021-12-27 23:25:36,999 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-27 23:25:36,999 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-27 23:25:37,028 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-27 23:25:37,033 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-27 23:25:37,033 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-27 23:25:37,042 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:25:37,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-27 23:25:37,045 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:25:37,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:25:37,046 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:25:37,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:25:37,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1804965382, now seen corresponding path program 1 times [2021-12-27 23:25:37,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 23:25:37,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636229089] [2021-12-27 23:25:37,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:25:37,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 23:25:37,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:25:37,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:25:37,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 23:25:37,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636229089] [2021-12-27 23:25:37,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636229089] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 23:25:37,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 23:25:37,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-27 23:25:37,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2850134] [2021-12-27 23:25:37,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 23:25:37,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-27 23:25:37,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 23:25:37,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-27 23:25:37,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-27 23:25:37,168 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:25:37,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:25:37,176 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-12-27 23:25:37,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-27 23:25:37,177 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-27 23:25:37,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:25:37,181 INFO L225 Difference]: With dead ends: 21 [2021-12-27 23:25:37,182 INFO L226 Difference]: Without dead ends: 8 [2021-12-27 23:25:37,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-27 23:25:37,186 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-27 23:25:37,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-27 23:25:37,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-12-27 23:25:37,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-12-27 23:25:37,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:25:37,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2021-12-27 23:25:37,204 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2021-12-27 23:25:37,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:25:37,205 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2021-12-27 23:25:37,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:25:37,205 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2021-12-27 23:25:37,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-27 23:25:37,205 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:25:37,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:25:37,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-27 23:25:37,206 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:25:37,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:25:37,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1806812424, now seen corresponding path program 1 times [2021-12-27 23:25:37,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 23:25:37,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153450444] [2021-12-27 23:25:37,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:25:37,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 23:25:37,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-27 23:25:37,244 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-27 23:25:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-27 23:25:37,283 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-27 23:25:37,303 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-27 23:25:37,305 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-27 23:25:37,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-27 23:25:37,308 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-27 23:25:37,310 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-27 23:25:37,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 11:25:37 BoogieIcfgContainer [2021-12-27 23:25:37,333 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-27 23:25:37,336 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-27 23:25:37,336 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-27 23:25:37,336 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-27 23:25:37,337 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:25:36" (3/4) ... [2021-12-27 23:25:37,339 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-27 23:25:37,339 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-27 23:25:37,340 INFO L158 Benchmark]: Toolchain (without parser) took 878.46ms. Allocated memory was 56.6MB in the beginning and 79.7MB in the end (delta: 23.1MB). Free memory was 35.7MB in the beginning and 49.6MB in the end (delta: -13.8MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. [2021-12-27 23:25:37,341 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 56.6MB. Free memory was 37.9MB in the beginning and 37.8MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-27 23:25:37,342 INFO L158 Benchmark]: CACSL2BoogieTranslator took 174.65ms. Allocated memory is still 56.6MB. Free memory was 35.6MB in the beginning and 25.6MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-27 23:25:37,343 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.06ms. Allocated memory was 56.6MB in the beginning and 79.7MB in the end (delta: 23.1MB). Free memory was 41.3MB in the beginning and 63.7MB in the end (delta: -22.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-27 23:25:37,344 INFO L158 Benchmark]: Boogie Preprocessor took 33.70ms. Allocated memory is still 79.7MB. Free memory was 63.7MB in the beginning and 62.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-27 23:25:37,344 INFO L158 Benchmark]: RCFGBuilder took 239.47ms. Allocated memory is still 79.7MB. Free memory was 62.6MB in the beginning and 53.0MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-27 23:25:37,346 INFO L158 Benchmark]: TraceAbstraction took 343.37ms. Allocated memory is still 79.7MB. Free memory was 52.5MB in the beginning and 50.0MB in the end (delta: 2.5MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2021-12-27 23:25:37,346 INFO L158 Benchmark]: Witness Printer took 3.75ms. Allocated memory is still 79.7MB. Free memory was 50.0MB in the beginning and 49.6MB in the end (delta: 376.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-27 23:25:37,348 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 56.6MB. Free memory was 37.9MB in the beginning and 37.8MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 174.65ms. Allocated memory is still 56.6MB. Free memory was 35.6MB in the beginning and 25.6MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.06ms. Allocated memory was 56.6MB in the beginning and 79.7MB in the end (delta: 23.1MB). Free memory was 41.3MB in the beginning and 63.7MB in the end (delta: -22.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.70ms. Allocated memory is still 79.7MB. Free memory was 63.7MB in the beginning and 62.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 239.47ms. Allocated memory is still 79.7MB. Free memory was 62.6MB in the beginning and 53.0MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 343.37ms. Allocated memory is still 79.7MB. Free memory was 52.5MB in the beginning and 50.0MB in the end (delta: 2.5MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. * Witness Printer took 3.75ms. Allocated memory is still 79.7MB. Free memory was 50.0MB in the beginning and 49.6MB in the end (delta: 376.4kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 52, overapproximation of someBinaryDOUBLEComparisonOperation at line 52, overapproximation of someBinaryArithmeticFLOAToperation at line 22. Possible FailurePath: [L45] float a,r; [L47] a = __VERIFIER_nondet_float() [L48] CALL assume_abort_if_not(a >= 0.1f && a <= 100.f) [L11] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L48] RET assume_abort_if_not(a >= 0.1f && a <= 100.f) [L50] CALL, EXPR InvSqrt(a) [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; VAL [\old(x)=1597463008, \result=1597463009, x=1597463009] [L50] RET, EXPR InvSqrt(a) [L50] r = InvSqrt(a) [L52] CALL __VERIFIER_assert(r >= 0.f && r <= 10.) [L13] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L13] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 11 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-27 23:25:37,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1f9d99a1e914bb5db4e356a6920ef9cb10f38df5cae5223ce35a4e418e6502dd --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-27 23:25:38,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-27 23:25:38,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-27 23:25:38,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-27 23:25:38,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-27 23:25:38,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-27 23:25:38,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-27 23:25:38,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-27 23:25:38,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-27 23:25:38,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-27 23:25:38,862 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-27 23:25:38,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-27 23:25:38,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-27 23:25:38,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-27 23:25:38,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-27 23:25:38,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-27 23:25:38,870 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-27 23:25:38,871 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-27 23:25:38,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-27 23:25:38,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-27 23:25:38,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-27 23:25:38,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-27 23:25:38,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-27 23:25:38,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-27 23:25:38,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-27 23:25:38,878 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-27 23:25:38,878 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-27 23:25:38,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-27 23:25:38,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-27 23:25:38,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-27 23:25:38,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-27 23:25:38,880 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-27 23:25:38,881 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-27 23:25:38,881 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-27 23:25:38,882 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-27 23:25:38,882 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-27 23:25:38,883 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-27 23:25:38,883 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-27 23:25:38,883 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-27 23:25:38,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-27 23:25:38,884 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-27 23:25:38,889 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-27 23:25:38,903 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-27 23:25:38,904 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-27 23:25:38,904 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-27 23:25:38,904 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-27 23:25:38,905 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-27 23:25:38,905 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-27 23:25:38,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-27 23:25:38,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-27 23:25:38,905 INFO L138 SettingsManager]: * Use SBE=true [2021-12-27 23:25:38,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-27 23:25:38,906 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-27 23:25:38,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-27 23:25:38,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-27 23:25:38,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-27 23:25:38,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-27 23:25:38,906 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-27 23:25:38,907 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-27 23:25:38,907 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-27 23:25:38,907 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-27 23:25:38,907 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-27 23:25:38,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-27 23:25:38,907 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-27 23:25:38,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-27 23:25:38,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-27 23:25:38,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-27 23:25:38,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-27 23:25:38,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 23:25:38,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-27 23:25:38,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-27 23:25:38,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-27 23:25:38,909 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-27 23:25:38,909 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-27 23:25:38,909 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-27 23:25:38,909 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-27 23:25:38,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-27 23:25:38,909 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-27 23:25:38,910 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f9d99a1e914bb5db4e356a6920ef9cb10f38df5cae5223ce35a4e418e6502dd [2021-12-27 23:25:39,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-27 23:25:39,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-27 23:25:39,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-27 23:25:39,141 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-27 23:25:39,141 INFO L275 PluginConnector]: CDTParser initialized [2021-12-27 23:25:39,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2021-12-27 23:25:39,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27e8ed807/e4a822c5432240b68c1166b2280683b9/FLAGb5f813f7e [2021-12-27 23:25:39,570 INFO L306 CDTParser]: Found 1 translation units. [2021-12-27 23:25:39,571 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2021-12-27 23:25:39,575 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27e8ed807/e4a822c5432240b68c1166b2280683b9/FLAGb5f813f7e [2021-12-27 23:25:39,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27e8ed807/e4a822c5432240b68c1166b2280683b9 [2021-12-27 23:25:39,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-27 23:25:39,586 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-27 23:25:39,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-27 23:25:39,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-27 23:25:39,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-27 23:25:39,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:25:39" (1/1) ... [2021-12-27 23:25:39,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bfc579e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:25:39, skipping insertion in model container [2021-12-27 23:25:39,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:25:39" (1/1) ... [2021-12-27 23:25:39,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-27 23:25:39,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-27 23:25:39,686 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c[585,598] [2021-12-27 23:25:39,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 23:25:39,703 INFO L203 MainTranslator]: Completed pre-run [2021-12-27 23:25:39,710 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c[585,598] [2021-12-27 23:25:39,715 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 23:25:39,724 INFO L208 MainTranslator]: Completed translation [2021-12-27 23:25:39,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:25:39 WrapperNode [2021-12-27 23:25:39,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-27 23:25:39,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-27 23:25:39,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-27 23:25:39,726 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-27 23:25:39,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:25:39" (1/1) ... [2021-12-27 23:25:39,759 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:25:39" (1/1) ... [2021-12-27 23:25:39,776 INFO L137 Inliner]: procedures = 21, calls = 17, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 48 [2021-12-27 23:25:39,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-27 23:25:39,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-27 23:25:39,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-27 23:25:39,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-27 23:25:39,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:25:39" (1/1) ... [2021-12-27 23:25:39,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:25:39" (1/1) ... [2021-12-27 23:25:39,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:25:39" (1/1) ... [2021-12-27 23:25:39,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:25:39" (1/1) ... [2021-12-27 23:25:39,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:25:39" (1/1) ... [2021-12-27 23:25:39,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:25:39" (1/1) ... [2021-12-27 23:25:39,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:25:39" (1/1) ... [2021-12-27 23:25:39,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-27 23:25:39,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-27 23:25:39,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-27 23:25:39,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-27 23:25:39,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:25:39" (1/1) ... [2021-12-27 23:25:39,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 23:25:39,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 23:25:39,817 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-27 23:25:39,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-27 23:25:39,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-27 23:25:39,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-27 23:25:39,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-27 23:25:39,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-12-27 23:25:39,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-27 23:25:39,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-27 23:25:39,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-27 23:25:39,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-12-27 23:25:39,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-27 23:25:39,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-27 23:25:39,895 INFO L234 CfgBuilder]: Building ICFG [2021-12-27 23:25:39,896 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-27 23:25:42,119 INFO L275 CfgBuilder]: Performing block encoding [2021-12-27 23:25:42,123 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-27 23:25:42,123 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-27 23:25:42,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:25:42 BoogieIcfgContainer [2021-12-27 23:25:42,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-27 23:25:42,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-27 23:25:42,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-27 23:25:42,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-27 23:25:42,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 11:25:39" (1/3) ... [2021-12-27 23:25:42,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d13862a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:25:42, skipping insertion in model container [2021-12-27 23:25:42,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:25:39" (2/3) ... [2021-12-27 23:25:42,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d13862a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:25:42, skipping insertion in model container [2021-12-27 23:25:42,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:25:42" (3/3) ... [2021-12-27 23:25:42,129 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_sqrt_Quake.c [2021-12-27 23:25:42,132 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-27 23:25:42,132 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-27 23:25:42,174 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-27 23:25:42,178 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-27 23:25:42,191 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-27 23:25:42,199 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:25:42,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-27 23:25:42,203 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:25:42,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:25:42,203 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:25:42,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:25:42,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1804965382, now seen corresponding path program 1 times [2021-12-27 23:25:42,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-27 23:25:42,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145791161] [2021-12-27 23:25:42,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:25:42,225 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-27 23:25:42,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-27 23:25:42,227 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-27 23:25:42,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-27 23:25:42,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:25:42,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-27 23:25:42,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 23:25:42,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:25:42,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-27 23:25:42,473 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-27 23:25:42,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145791161] [2021-12-27 23:25:42,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145791161] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 23:25:42,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 23:25:42,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-27 23:25:42,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399334402] [2021-12-27 23:25:42,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 23:25:42,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-27 23:25:42,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-27 23:25:42,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-27 23:25:42,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-27 23:25:42,500 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:25:42,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:25:42,508 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-12-27 23:25:42,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-27 23:25:42,509 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-27 23:25:42,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:25:42,514 INFO L225 Difference]: With dead ends: 21 [2021-12-27 23:25:42,514 INFO L226 Difference]: Without dead ends: 8 [2021-12-27 23:25:42,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-27 23:25:42,519 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-27 23:25:42,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-27 23:25:42,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-12-27 23:25:42,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-12-27 23:25:42,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:25:42,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2021-12-27 23:25:42,539 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2021-12-27 23:25:42,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:25:42,539 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2021-12-27 23:25:42,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:25:42,540 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2021-12-27 23:25:42,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-27 23:25:42,540 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:25:42,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:25:42,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-27 23:25:42,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-27 23:25:42,754 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:25:42,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:25:42,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1806812424, now seen corresponding path program 1 times [2021-12-27 23:25:42,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-27 23:25:42,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381034724] [2021-12-27 23:25:42,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:25:42,764 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-27 23:25:42,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-27 23:25:42,768 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-27 23:25:42,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-27 23:25:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:25:44,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-27 23:25:44,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 23:25:58,727 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_13 (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) v_ArrVal_13) ((_ extract 30 23) v_ArrVal_13) ((_ extract 22 0) v_ArrVal_13)))) (and (fp.geq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 10.0))) (= (let ((.cse1 (let ((.cse2 (bvadd (_ bv1597463007 32) (bvneg (bvashr v_ArrVal_13 (_ bv1 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#1|) (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 100.0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false