/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 11:54:49,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 11:54:49,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 11:54:49,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 11:54:49,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 11:54:49,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 11:54:49,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 11:54:49,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 11:54:49,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 11:54:49,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 11:54:49,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 11:54:49,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 11:54:49,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 11:54:49,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 11:54:49,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 11:54:49,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 11:54:49,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 11:54:49,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 11:54:49,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 11:54:49,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 11:54:49,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 11:54:49,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 11:54:49,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 11:54:49,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 11:54:49,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 11:54:49,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 11:54:49,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 11:54:49,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 11:54:49,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 11:54:49,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 11:54:49,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 11:54:49,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 11:54:49,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 11:54:49,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 11:54:49,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 11:54:49,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 11:54:49,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 11:54:49,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 11:54:49,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 11:54:49,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 11:54:49,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 11:54:49,754 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 11:54:49,811 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 11:54:49,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 11:54:49,812 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 11:54:49,813 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 11:54:49,814 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 11:54:49,814 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 11:54:49,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 11:54:49,817 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 11:54:49,817 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 11:54:49,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 11:54:49,818 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 11:54:49,819 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 11:54:49,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 11:54:49,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 11:54:49,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 11:54:49,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 11:54:49,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 11:54:49,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 11:54:49,820 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 11:54:49,821 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 11:54:49,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 11:54:49,821 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 11:54:49,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 11:54:49,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 11:54:49,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 11:54:49,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 11:54:49,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 11:54:49,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 11:54:49,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 11:54:49,823 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 11:54:49,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 11:54:49,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 11:54:49,824 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 11:54:49,825 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 11:54:50,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 11:54:50,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 11:54:50,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 11:54:50,242 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 11:54:50,242 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 11:54:50,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2022-10-16 11:54:50,334 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc4b2870f/73a246749b6c417a98af953b1d54d720/FLAG53d4b4683 [2022-10-16 11:54:50,896 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 11:54:50,897 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2022-10-16 11:54:50,907 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc4b2870f/73a246749b6c417a98af953b1d54d720/FLAG53d4b4683 [2022-10-16 11:54:51,243 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc4b2870f/73a246749b6c417a98af953b1d54d720 [2022-10-16 11:54:51,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 11:54:51,256 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 11:54:51,261 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 11:54:51,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 11:54:51,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 11:54:51,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:54:51" (1/1) ... [2022-10-16 11:54:51,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11a63ae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:54:51, skipping insertion in model container [2022-10-16 11:54:51,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:54:51" (1/1) ... [2022-10-16 11:54:51,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 11:54:51,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 11:54:51,552 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] [2022-10-16 11:54:51,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 11:54:51,581 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 11:54:51,597 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] [2022-10-16 11:54:51,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 11:54:51,624 INFO L208 MainTranslator]: Completed translation [2022-10-16 11:54:51,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:54:51 WrapperNode [2022-10-16 11:54:51,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 11:54:51,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 11:54:51,626 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 11:54:51,627 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 11:54:51,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:54:51" (1/1) ... [2022-10-16 11:54:51,647 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:54:51" (1/1) ... [2022-10-16 11:54:51,673 INFO L138 Inliner]: procedures = 18, calls = 17, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 49 [2022-10-16 11:54:51,673 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 11:54:51,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 11:54:51,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 11:54:51,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 11:54:51,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:54:51" (1/1) ... [2022-10-16 11:54:51,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:54:51" (1/1) ... [2022-10-16 11:54:51,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:54:51" (1/1) ... [2022-10-16 11:54:51,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:54:51" (1/1) ... [2022-10-16 11:54:51,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:54:51" (1/1) ... [2022-10-16 11:54:51,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:54:51" (1/1) ... [2022-10-16 11:54:51,702 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:54:51" (1/1) ... [2022-10-16 11:54:51,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:54:51" (1/1) ... [2022-10-16 11:54:51,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 11:54:51,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 11:54:51,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 11:54:51,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 11:54:51,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:54:51" (1/1) ... [2022-10-16 11:54:51,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 11:54:51,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:54:51,810 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) [2022-10-16 11:54:51,834 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 [2022-10-16 11:54:51,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 11:54:51,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 11:54:51,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 11:54:51,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-10-16 11:54:51,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 11:54:51,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-10-16 11:54:51,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 11:54:51,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 11:54:51,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 11:54:51,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 11:54:52,008 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 11:54:52,011 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 11:54:52,269 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 11:54:52,291 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 11:54:52,291 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-16 11:54:52,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:54:52 BoogieIcfgContainer [2022-10-16 11:54:52,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 11:54:52,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 11:54:52,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 11:54:52,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 11:54:52,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:54:51" (1/3) ... [2022-10-16 11:54:52,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58640eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:54:52, skipping insertion in model container [2022-10-16 11:54:52,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:54:51" (2/3) ... [2022-10-16 11:54:52,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58640eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:54:52, skipping insertion in model container [2022-10-16 11:54:52,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:54:52" (3/3) ... [2022-10-16 11:54:52,304 INFO L112 eAbstractionObserver]: Analyzing ICFG inv_sqrt_Quake.c [2022-10-16 11:54:52,326 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 11:54:52,326 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-16 11:54:52,385 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 11:54:52,394 INFO L357 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=FINITE_AUTOMATA, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@685eceae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 11:54:52,394 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-16 11:54:52,402 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 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) [2022-10-16 11:54:52,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-16 11:54:52,411 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:54:52,412 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-16 11:54:52,413 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 11:54:52,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:54:52,424 INFO L85 PathProgramCache]: Analyzing trace with hash 28693827, now seen corresponding path program 1 times [2022-10-16 11:54:52,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:54:52,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797818673] [2022-10-16 11:54:52,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:54:52,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:54:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:54:52,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:54:52,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:54:52,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797818673] [2022-10-16 11:54:52,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797818673] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:54:52,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:54:52,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 11:54:52,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574079230] [2022-10-16 11:54:52,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:54:52,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-16 11:54:52,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:54:52,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-16 11:54:52,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 11:54:52,801 INFO L87 Difference]: Start difference. First operand has 15 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-10-16 11:54:52,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:54:52,822 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2022-10-16 11:54:52,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-16 11:54:52,825 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2022-10-16 11:54:52,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:54:52,835 INFO L225 Difference]: With dead ends: 27 [2022-10-16 11:54:52,836 INFO L226 Difference]: Without dead ends: 8 [2022-10-16 11:54:52,841 INFO L412 NwaCegarLoop]: 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 [2022-10-16 11:54:52,847 INFO L413 NwaCegarLoop]: 14 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, 14 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 [2022-10-16 11:54:52,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:54:52,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-10-16 11:54:52,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-10-16 11:54:52,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 6 states have (on average 1.1666666666666667) 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) [2022-10-16 11:54:52,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2022-10-16 11:54:52,890 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 5 [2022-10-16 11:54:52,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:54:52,891 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2022-10-16 11:54:52,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-10-16 11:54:52,892 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2022-10-16 11:54:52,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-16 11:54:52,892 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:54:52,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-16 11:54:52,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 11:54:52,894 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 11:54:52,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:54:52,896 INFO L85 PathProgramCache]: Analyzing trace with hash 28695749, now seen corresponding path program 1 times [2022-10-16 11:54:52,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:54:52,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439105366] [2022-10-16 11:54:52,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:54:52,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:54:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-16 11:54:52,965 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-16 11:54:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-16 11:54:53,058 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-16 11:54:53,059 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-16 11:54:53,062 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-10-16 11:54:53,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-10-16 11:54:53,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 11:54:53,074 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-16 11:54:53,081 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-16 11:54:53,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:54:53 BoogieIcfgContainer [2022-10-16 11:54:53,117 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-16 11:54:53,119 INFO L158 Benchmark]: Toolchain (without parser) took 1866.16ms. Allocated memory is still 161.5MB. Free memory was 114.7MB in the beginning and 109.4MB in the end (delta: 5.3MB). Peak memory consumption was 4.9MB. Max. memory is 8.0GB. [2022-10-16 11:54:53,120 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 161.5MB. Free memory was 131.4MB in the beginning and 131.2MB in the end (delta: 142.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-10-16 11:54:53,124 INFO L158 Benchmark]: CACSL2BoogieTranslator took 364.00ms. Allocated memory is still 161.5MB. Free memory was 114.4MB in the beginning and 104.4MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-10-16 11:54:53,131 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.58ms. Allocated memory is still 161.5MB. Free memory was 104.4MB in the beginning and 102.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-16 11:54:53,133 INFO L158 Benchmark]: Boogie Preprocessor took 45.34ms. Allocated memory is still 161.5MB. Free memory was 102.8MB in the beginning and 144.0MB in the end (delta: -41.2MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-10-16 11:54:53,134 INFO L158 Benchmark]: RCFGBuilder took 573.13ms. Allocated memory is still 161.5MB. Free memory was 144.0MB in the beginning and 133.9MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-10-16 11:54:53,135 INFO L158 Benchmark]: TraceAbstraction took 820.83ms. Allocated memory is still 161.5MB. Free memory was 133.2MB in the beginning and 109.4MB in the end (delta: 23.8MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2022-10-16 11:54:53,140 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 161.5MB. Free memory was 131.4MB in the beginning and 131.2MB in the end (delta: 142.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 364.00ms. Allocated memory is still 161.5MB. Free memory was 114.4MB in the beginning and 104.4MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.58ms. Allocated memory is still 161.5MB. Free memory was 104.4MB in the beginning and 102.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 45.34ms. Allocated memory is still 161.5MB. Free memory was 102.8MB in the beginning and 144.0MB in the end (delta: -41.2MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * RCFGBuilder took 573.13ms. Allocated memory is still 161.5MB. Free memory was 144.0MB in the beginning and 133.9MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 820.83ms. Allocated memory is still 161.5MB. Free memory was 133.2MB in the beginning and 109.4MB in the end (delta: 23.8MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * 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: 25]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of someBinaryFLOATComparisonOperation at line 48, 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 InvSqrt(a) [L22] float xhalf = 0.5f*x; [L23] union float_int i; [L24] i.f = x [L25] EXPR i.i VAL [\old(x)=56, i={5:0}, i.i=-1100041281, x=56] [L25] 0x5f3759df - (i.i>>1) VAL [\old(x)=56, i={5:0}, i.i=-1100041281, x=56] - UnprovableResult [Line: 25]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 14 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, 14 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=15occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 4 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 [2022-10-16 11:54:53,201 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...