./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 3a877d22 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 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:24:41,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:24:41,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:24:41,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:24:41,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:24:41,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:24:41,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:24:41,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:24:41,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:24:41,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:24:41,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:24:41,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:24:41,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:24:41,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:24:41,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:24:41,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:24:41,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:24:41,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:24:41,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:24:41,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:24:41,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:24:41,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:24:41,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:24:41,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:24:41,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:24:41,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:24:41,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:24:41,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:24:41,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:24:41,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:24:41,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:24:41,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:24:41,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:24:41,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:24:41,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:24:41,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:24:41,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:24:41,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:24:41,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:24:41,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:24:41,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:24:41,611 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 10:24:41,633 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:24:41,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:24:41,634 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:24:41,634 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:24:41,635 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:24:41,635 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:24:41,635 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:24:41,635 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:24:41,636 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:24:41,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:24:41,637 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:24:41,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 10:24:41,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:24:41,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:24:41,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:24:41,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:24:41,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:24:41,638 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:24:41,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:24:41,638 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:24:41,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:24:41,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:24:41,639 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:24:41,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:24:41,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:24:41,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:24:41,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:24:41,640 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:24:41,640 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 10:24:41,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 10:24:41,640 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:24:41,640 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:24:41,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:24:41,641 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:24:41,641 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f9d99a1e914bb5db4e356a6920ef9cb10f38df5cae5223ce35a4e418e6502dd [2021-12-15 10:24:41,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:24:41,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:24:41,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:24:41,843 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:24:41,844 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:24:41,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2021-12-15 10:24:41,895 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/691c531a3/b8393bf0b9f546fdab426f9ceed88224/FLAGe65fe8c59 [2021-12-15 10:24:42,184 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:24:42,185 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2021-12-15 10:24:42,189 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/691c531a3/b8393bf0b9f546fdab426f9ceed88224/FLAGe65fe8c59 [2021-12-15 10:24:42,621 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/691c531a3/b8393bf0b9f546fdab426f9ceed88224 [2021-12-15 10:24:42,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:24:42,624 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:24:42,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:24:42,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:24:42,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:24:42,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:24:42" (1/1) ... [2021-12-15 10:24:42,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@137f4ab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:24:42, skipping insertion in model container [2021-12-15 10:24:42,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:24:42" (1/1) ... [2021-12-15 10:24:42,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:24:42,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:24:42,795 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] [2021-12-15 10:24:42,807 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:24:42,812 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:24:42,825 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] [2021-12-15 10:24:42,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:24:42,843 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:24:42,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:24:42 WrapperNode [2021-12-15 10:24:42,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:24:42,845 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:24:42,845 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:24:42,845 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:24:42,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:24:42" (1/1) ... [2021-12-15 10:24:42,855 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:24:42" (1/1) ... [2021-12-15 10:24:42,868 INFO L137 Inliner]: procedures = 18, calls = 17, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 47 [2021-12-15 10:24:42,868 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:24:42,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:24:42,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:24:42,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:24:42,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:24:42" (1/1) ... [2021-12-15 10:24:42,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:24:42" (1/1) ... [2021-12-15 10:24:42,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:24:42" (1/1) ... [2021-12-15 10:24:42,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:24:42" (1/1) ... [2021-12-15 10:24:42,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:24:42" (1/1) ... [2021-12-15 10:24:42,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:24:42" (1/1) ... [2021-12-15 10:24:42,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:24:42" (1/1) ... [2021-12-15 10:24:42,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:24:42,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:24:42,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:24:42,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:24:42,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:24:42" (1/1) ... [2021-12-15 10:24:42,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:24:42,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:24:42,925 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) [2021-12-15 10:24:42,947 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 [2021-12-15 10:24:42,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:24:42,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 10:24:42,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 10:24:42,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-15 10:24:42,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 10:24:42,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-15 10:24:42,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:24:42,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:24:42,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 10:24:42,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 10:24:43,018 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:24:43,019 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:24:43,091 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 10:24:43,095 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 10:24:43,096 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 10:24:43,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:24:43 BoogieIcfgContainer [2021-12-15 10:24:43,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 10:24:43,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 10:24:43,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 10:24:43,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 10:24:43,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:24:42" (1/3) ... [2021-12-15 10:24:43,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d84ec18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:24:43, skipping insertion in model container [2021-12-15 10:24:43,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:24:42" (2/3) ... [2021-12-15 10:24:43,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d84ec18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:24:43, skipping insertion in model container [2021-12-15 10:24:43,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:24:43" (3/3) ... [2021-12-15 10:24:43,103 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_sqrt_Quake.c [2021-12-15 10:24:43,106 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 10:24:43,109 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 10:24:43,146 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 10:24:43,151 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 [2021-12-15 10:24:43,151 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 10:24:43,160 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) [2021-12-15 10:24:43,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-15 10:24:43,164 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:24:43,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:24:43,165 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:24:43,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:24:43,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1804965382, now seen corresponding path program 1 times [2021-12-15 10:24:43,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:24:43,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322773114] [2021-12-15 10:24:43,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:24:43,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:24:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:24:43,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 10:24:43,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:24:43,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322773114] [2021-12-15 10:24:43,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322773114] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:24:43,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 10:24:43,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 10:24:43,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10819419] [2021-12-15 10:24:43,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:24:43,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 10:24:43,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:24:43,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 10:24:43,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 10:24:43,335 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) [2021-12-15 10:24:43,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:24:43,344 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-12-15 10:24:43,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 10:24:43,345 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 [2021-12-15 10:24:43,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:24:43,350 INFO L225 Difference]: With dead ends: 21 [2021-12-15 10:24:43,351 INFO L226 Difference]: Without dead ends: 8 [2021-12-15 10:24:43,353 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 [2021-12-15 10:24:43,356 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 [2021-12-15 10:24:43,356 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] [2021-12-15 10:24:43,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-12-15 10:24:43,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-12-15 10:24:43,388 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) [2021-12-15 10:24:43,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2021-12-15 10:24:43,389 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2021-12-15 10:24:43,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:24:43,390 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2021-12-15 10:24:43,390 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) [2021-12-15 10:24:43,390 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2021-12-15 10:24:43,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-15 10:24:43,390 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:24:43,391 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:24:43,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 10:24:43,392 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:24:43,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:24:43,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1806812424, now seen corresponding path program 1 times [2021-12-15 10:24:43,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:24:43,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848639181] [2021-12-15 10:24:43,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:24:43,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:24:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 10:24:43,443 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 10:24:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 10:24:43,481 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 10:24:43,481 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-15 10:24:43,482 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-15 10:24:43,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 10:24:43,486 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-15 10:24:43,488 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-15 10:24:43,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 10:24:43 BoogieIcfgContainer [2021-12-15 10:24:43,508 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-15 10:24:43,509 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-15 10:24:43,509 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-15 10:24:43,510 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-15 10:24:43,510 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:24:43" (3/4) ... [2021-12-15 10:24:43,513 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-15 10:24:43,513 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-15 10:24:43,514 INFO L158 Benchmark]: Toolchain (without parser) took 889.72ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 69.0MB in the beginning and 86.5MB in the end (delta: -17.4MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2021-12-15 10:24:43,515 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory is still 54.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:24:43,516 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.61ms. Allocated memory is still 98.6MB. Free memory was 68.8MB in the beginning and 73.7MB in the end (delta: -4.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:24:43,516 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.59ms. Allocated memory is still 98.6MB. Free memory was 73.7MB in the beginning and 72.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:24:43,517 INFO L158 Benchmark]: Boogie Preprocessor took 28.30ms. Allocated memory is still 98.6MB. Free memory was 72.3MB in the beginning and 71.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:24:43,517 INFO L158 Benchmark]: RCFGBuilder took 199.22ms. Allocated memory is still 98.6MB. Free memory was 70.8MB in the beginning and 61.4MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:24:43,519 INFO L158 Benchmark]: TraceAbstraction took 410.50ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 61.1MB in the beginning and 87.1MB in the end (delta: -26.0MB). Peak memory consumption was 284.8kB. Max. memory is 16.1GB. [2021-12-15 10:24:43,519 INFO L158 Benchmark]: Witness Printer took 4.04ms. Allocated memory is still 121.6MB. Free memory was 87.1MB in the beginning and 86.5MB in the end (delta: 587.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:24:43,522 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory is still 54.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 212.61ms. Allocated memory is still 98.6MB. Free memory was 68.8MB in the beginning and 73.7MB in the end (delta: -4.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.59ms. Allocated memory is still 98.6MB. Free memory was 73.7MB in the beginning and 72.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.30ms. Allocated memory is still 98.6MB. Free memory was 72.3MB in the beginning and 71.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 199.22ms. Allocated memory is still 98.6MB. Free memory was 70.8MB in the beginning and 61.4MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 410.50ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 61.1MB in the beginning and 87.1MB in the end (delta: -26.0MB). Peak memory consumption was 284.8kB. Max. memory is 16.1GB. * Witness Printer took 4.04ms. Allocated memory is still 121.6MB. Free memory was 87.1MB in the beginning and 86.5MB in the end (delta: 587.3kB). 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: 0.1s, 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 [2021-12-15 10:24:43,555 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 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:24:45,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:24:45,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:24:45,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:24:45,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:24:45,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:24:45,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:24:45,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:24:45,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:24:45,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:24:45,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:24:45,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:24:45,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:24:45,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:24:45,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:24:45,299 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:24:45,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:24:45,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:24:45,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:24:45,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:24:45,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:24:45,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:24:45,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:24:45,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:24:45,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:24:45,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:24:45,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:24:45,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:24:45,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:24:45,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:24:45,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:24:45,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:24:45,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:24:45,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:24:45,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:24:45,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:24:45,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:24:45,325 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:24:45,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:24:45,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:24:45,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:24:45,330 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 10:24:45,348 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:24:45,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:24:45,349 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:24:45,350 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:24:45,350 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:24:45,350 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:24:45,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:24:45,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:24:45,351 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:24:45,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:24:45,352 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:24:45,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:24:45,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:24:45,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:24:45,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:24:45,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:24:45,353 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 10:24:45,353 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 10:24:45,354 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 10:24:45,354 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:24:45,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:24:45,354 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:24:45,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:24:45,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:24:45,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:24:45,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:24:45,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:24:45,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:24:45,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:24:45,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:24:45,356 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 10:24:45,356 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 10:24:45,356 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:24:45,356 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:24:45,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:24:45,357 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:24:45,357 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 10:24:45,357 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f9d99a1e914bb5db4e356a6920ef9cb10f38df5cae5223ce35a4e418e6502dd [2021-12-15 10:24:45,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:24:45,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:24:45,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:24:45,613 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:24:45,613 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:24:45,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2021-12-15 10:24:45,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64226d968/98ca9c5a7bf4439688558065e1988a69/FLAG762f87d17 [2021-12-15 10:24:45,968 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:24:45,969 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2021-12-15 10:24:45,985 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64226d968/98ca9c5a7bf4439688558065e1988a69/FLAG762f87d17 [2021-12-15 10:24:46,410 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64226d968/98ca9c5a7bf4439688558065e1988a69 [2021-12-15 10:24:46,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:24:46,414 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:24:46,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:24:46,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:24:46,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:24:46,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:24:46" (1/1) ... [2021-12-15 10:24:46,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b1d2e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:24:46, skipping insertion in model container [2021-12-15 10:24:46,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:24:46" (1/1) ... [2021-12-15 10:24:46,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:24:46,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:24:46,570 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] [2021-12-15 10:24:46,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:24:46,598 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:24:46,609 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] [2021-12-15 10:24:46,618 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:24:46,662 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:24:46,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:24:46 WrapperNode [2021-12-15 10:24:46,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:24:46,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:24:46,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:24:46,663 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:24:46,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:24:46" (1/1) ... [2021-12-15 10:24:46,691 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:24:46" (1/1) ... [2021-12-15 10:24:46,710 INFO L137 Inliner]: procedures = 21, calls = 17, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 48 [2021-12-15 10:24:46,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:24:46,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:24:46,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:24:46,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:24:46,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:24:46" (1/1) ... [2021-12-15 10:24:46,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:24:46" (1/1) ... [2021-12-15 10:24:46,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:24:46" (1/1) ... [2021-12-15 10:24:46,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:24:46" (1/1) ... [2021-12-15 10:24:46,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:24:46" (1/1) ... [2021-12-15 10:24:46,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:24:46" (1/1) ... [2021-12-15 10:24:46,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:24:46" (1/1) ... [2021-12-15 10:24:46,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:24:46,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:24:46,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:24:46,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:24:46,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:24:46" (1/1) ... [2021-12-15 10:24:46,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:24:46,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:24:46,788 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) [2021-12-15 10:24:46,811 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 [2021-12-15 10:24:46,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:24:46,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 10:24:46,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 10:24:46,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-12-15 10:24:46,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 10:24:46,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:24:46,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:24:46,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-12-15 10:24:46,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 10:24:46,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 10:24:46,894 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:24:46,895 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:24:49,153 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 10:24:49,156 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 10:24:49,156 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 10:24:49,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:24:49 BoogieIcfgContainer [2021-12-15 10:24:49,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 10:24:49,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 10:24:49,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 10:24:49,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 10:24:49,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:24:46" (1/3) ... [2021-12-15 10:24:49,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ede1314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:24:49, skipping insertion in model container [2021-12-15 10:24:49,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:24:46" (2/3) ... [2021-12-15 10:24:49,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ede1314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:24:49, skipping insertion in model container [2021-12-15 10:24:49,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:24:49" (3/3) ... [2021-12-15 10:24:49,162 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_sqrt_Quake.c [2021-12-15 10:24:49,165 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 10:24:49,165 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 10:24:49,190 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 10:24:49,194 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 [2021-12-15 10:24:49,195 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 10:24:49,204 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) [2021-12-15 10:24:49,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-15 10:24:49,207 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:24:49,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:24:49,208 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:24:49,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:24:49,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1804965382, now seen corresponding path program 1 times [2021-12-15 10:24:49,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 10:24:49,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1192807347] [2021-12-15 10:24:49,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:24:49,226 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 10:24:49,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 10:24:49,227 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) [2021-12-15 10:24:49,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 10:24:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:24:49,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-15 10:24:49,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 10:24:49,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 10:24:49,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 10:24:49,468 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 10:24:49,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1192807347] [2021-12-15 10:24:49,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1192807347] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:24:49,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 10:24:49,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 10:24:49,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751957235] [2021-12-15 10:24:49,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:24:49,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 10:24:49,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 10:24:49,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 10:24:49,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 10:24:49,500 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) [2021-12-15 10:24:49,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:24:49,509 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-12-15 10:24:49,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 10:24:49,510 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 [2021-12-15 10:24:49,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:24:49,514 INFO L225 Difference]: With dead ends: 21 [2021-12-15 10:24:49,514 INFO L226 Difference]: Without dead ends: 8 [2021-12-15 10:24:49,516 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 [2021-12-15 10:24:49,519 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 [2021-12-15 10:24:49,520 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] [2021-12-15 10:24:49,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-12-15 10:24:49,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-12-15 10:24:49,537 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) [2021-12-15 10:24:49,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2021-12-15 10:24:49,539 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2021-12-15 10:24:49,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:24:49,539 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2021-12-15 10:24:49,539 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) [2021-12-15 10:24:49,540 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2021-12-15 10:24:49,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-15 10:24:49,540 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:24:49,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:24:49,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 10:24:49,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 10:24:49,751 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:24:49,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:24:49,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1806812424, now seen corresponding path program 1 times [2021-12-15 10:24:49,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 10:24:49,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401990468] [2021-12-15 10:24:49,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:24:49,752 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 10:24:49,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 10:24:49,753 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) [2021-12-15 10:24:49,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-15 10:24:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:24:50,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-15 10:24:50,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 10:25:03,373 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (exists ((|v_skolemized_q#valueAsBitvector_5| (_ BitVec 32))) (let ((.cse1 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_5|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_5|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_5|)))) (and (= |c_ULTIMATE.start_InvSqrt_#res#1| (let ((.cse0 (let ((.cse2 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_5| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul c_currentRoundingMode .cse0 (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)) .cse1) .cse0) .cse0))))) (fp.geq .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 10.0))) (fp.leq .cse1 ((_ to_fp 8 24) c_currentRoundingMode 100.0)))))) is different from false