java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:13:13,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:13:13,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:13:13,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 01:13:13,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 01:13:13,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 01:13:13,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 01:13:13,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 01:13:13,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 01:13:13,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 01:13:13,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 01:13:13,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 01:13:13,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 01:13:13,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 01:13:13,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 01:13:13,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 01:13:13,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 01:13:13,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 01:13:13,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 01:13:13,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 01:13:13,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 01:13:13,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 01:13:13,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 01:13:13,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 01:13:13,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 01:13:13,513 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 01:13:13,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 01:13:13,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 01:13:13,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 01:13:13,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 01:13:13,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 01:13:13,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 01:13:13,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 01:13:13,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:13:13,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:13:13,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:13:13,520 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-08 01:13:13,535 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:13:13,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:13:13,537 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:13:13,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:13:13,537 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:13:13,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:13:13,538 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:13:13,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:13:13,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:13:13,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:13:13,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:13:13,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:13:13,539 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:13:13,539 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:13:13,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:13:13,539 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:13:13,540 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:13:13,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:13:13,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:13:13,540 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:13:13,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:13:13,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:13:13,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:13:13,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:13:13,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:13:13,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:13:13,542 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:13:13,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:13:13,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:13:13,580 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:13:13,593 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:13:13,597 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:13:13,598 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:13:13,599 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:13:13,599 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c [2019-09-08 01:13:13,675 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1f43a962/cd50986e157e400e96a54c6e322039fd/FLAGa123db3e2 [2019-09-08 01:13:14,174 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:13:14,175 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c [2019-09-08 01:13:14,182 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1f43a962/cd50986e157e400e96a54c6e322039fd/FLAGa123db3e2 [2019-09-08 01:13:14,527 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1f43a962/cd50986e157e400e96a54c6e322039fd [2019-09-08 01:13:14,539 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:13:14,541 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:13:14,542 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:13:14,542 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:13:14,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:13:14,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:13:14" (1/1) ... [2019-09-08 01:13:14,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29d2acb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:13:14, skipping insertion in model container [2019-09-08 01:13:14,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:13:14" (1/1) ... [2019-09-08 01:13:14,558 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:13:14,578 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:13:14,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:13:14,757 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:13:14,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:13:14,907 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:13:14,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:13:14 WrapperNode [2019-09-08 01:13:14,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:13:14,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:13:14,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:13:14,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:13:14,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:13:14" (1/1) ... [2019-09-08 01:13:14,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:13:14" (1/1) ... [2019-09-08 01:13:14,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:13:14" (1/1) ... [2019-09-08 01:13:14,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:13:14" (1/1) ... [2019-09-08 01:13:14,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:13:14" (1/1) ... [2019-09-08 01:13:14,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:13:14" (1/1) ... [2019-09-08 01:13:14,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:13:14" (1/1) ... [2019-09-08 01:13:14,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:13:14,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:13:14,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:13:14,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:13:14,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:13:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:13:15,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:13:15,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:13:15,007 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:13:15,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:13:15,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-09-08 01:13:15,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 01:13:15,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-08 01:13:15,008 INFO L130 BoogieDeclarations]: Found specification of procedure InvSqrt [2019-09-08 01:13:15,008 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:13:15,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 01:13:15,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-08 01:13:15,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 01:13:15,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 01:13:15,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-08 01:13:15,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 01:13:15,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:13:15,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:13:15,257 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:13:15,258 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-08 01:13:15,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:13:15 BoogieIcfgContainer [2019-09-08 01:13:15,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:13:15,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:13:15,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:13:15,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:13:15,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:13:14" (1/3) ... [2019-09-08 01:13:15,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55a5d827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:13:15, skipping insertion in model container [2019-09-08 01:13:15,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:13:14" (2/3) ... [2019-09-08 01:13:15,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55a5d827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:13:15, skipping insertion in model container [2019-09-08 01:13:15,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:13:15" (3/3) ... [2019-09-08 01:13:15,288 INFO L109 eAbstractionObserver]: Analyzing ICFG inv_sqrt_Quake.c.v+cfa-reducer.c [2019-09-08 01:13:15,315 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:13:15,331 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:13:15,351 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:13:15,389 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:13:15,390 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:13:15,390 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:13:15,391 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:13:15,391 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:13:15,391 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:13:15,391 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:13:15,391 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:13:15,391 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:13:15,409 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-09-08 01:13:15,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-08 01:13:15,413 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:13:15,414 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:13:15,416 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:13:15,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:13:15,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1709792353, now seen corresponding path program 1 times [2019-09-08 01:13:15,424 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:13:15,425 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:13:15,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:13:15,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:13:15,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:13:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:13:15,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:13:15,638 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:13:15,644 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 01:13:15,648 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 01:13:15,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 01:13:15,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 01:13:15,662 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2019-09-08 01:13:15,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:13:15,725 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2019-09-08 01:13:15,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 01:13:15,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-09-08 01:13:15,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:13:15,743 INFO L225 Difference]: With dead ends: 30 [2019-09-08 01:13:15,743 INFO L226 Difference]: Without dead ends: 16 [2019-09-08 01:13:15,747 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-08 01:13:15,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-09-08 01:13:15,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-09-08 01:13:15,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-09-08 01:13:15,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-09-08 01:13:15,788 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2019-09-08 01:13:15,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:13:15,789 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-09-08 01:13:15,789 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 01:13:15,789 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-09-08 01:13:15,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-08 01:13:15,790 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:13:15,790 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:13:15,791 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:13:15,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:13:15,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1724896390, now seen corresponding path program 1 times [2019-09-08 01:13:15,792 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:13:15,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:13:15,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:13:15,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:13:15,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:13:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:13:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:13:15,862 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 01:13:15,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 01:13:15 BoogieIcfgContainer [2019-09-08 01:13:15,898 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 01:13:15,901 INFO L168 Benchmark]: Toolchain (without parser) took 1358.91 ms. Allocated memory was 132.6 MB in the beginning and 200.3 MB in the end (delta: 67.6 MB). Free memory was 88.7 MB in the beginning and 131.6 MB in the end (delta: -42.9 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2019-09-08 01:13:15,902 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 132.6 MB. Free memory was 107.1 MB in the beginning and 106.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 01:13:15,903 INFO L168 Benchmark]: CACSL2BoogieTranslator took 367.01 ms. Allocated memory was 132.6 MB in the beginning and 200.3 MB in the end (delta: 67.6 MB). Free memory was 88.5 MB in the beginning and 177.7 MB in the end (delta: -89.2 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2019-09-08 01:13:15,904 INFO L168 Benchmark]: Boogie Preprocessor took 41.31 ms. Allocated memory is still 200.3 MB. Free memory was 177.7 MB in the beginning and 175.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-09-08 01:13:15,905 INFO L168 Benchmark]: RCFGBuilder took 315.66 ms. Allocated memory is still 200.3 MB. Free memory was 175.4 MB in the beginning and 160.0 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2019-09-08 01:13:15,906 INFO L168 Benchmark]: TraceAbstraction took 629.11 ms. Allocated memory is still 200.3 MB. Free memory was 160.0 MB in the beginning and 131.6 MB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2019-09-08 01:13:15,911 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 132.6 MB. Free memory was 107.1 MB in the beginning and 106.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 367.01 ms. Allocated memory was 132.6 MB in the beginning and 200.3 MB in the end (delta: 67.6 MB). Free memory was 88.5 MB in the beginning and 177.7 MB in the end (delta: -89.2 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.31 ms. Allocated memory is still 200.3 MB. Free memory was 177.7 MB in the beginning and 175.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 315.66 ms. Allocated memory is still 200.3 MB. Free memory was 175.4 MB in the beginning and 160.0 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 629.11 ms. Allocated memory is still 200.3 MB. Free memory was 160.0 MB in the beginning and 131.6 MB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 54]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 32. Possible FailurePath: [L1] int __return_main; [L12] float __return_72; [L13] int __return_87; VAL [\old(__return_72)=11, \old(__return_87)=7, \old(__return_main)=10, __return_72=0, __return_87=0, __return_main=0] [L16] float main__a; [L17] float main__r; [L18] main__a = __VERIFIER_nondet_float() [L19] int main____CPAchecker_TMP_0; VAL [\old(__return_72)=0, \old(__return_87)=0, __return_72=0, __return_87=0, __return_main=0, main__a=14] [L20] COND TRUE main__a >= 0.10000000149011612 VAL [\old(__return_72)=0, \old(__return_87)=0, __return_72=0, __return_87=0, __return_main=0, main__a=14] [L22] COND TRUE main__a <= 100.0 [L24] main____CPAchecker_TMP_0 = 1 VAL [\old(__return_72)=0, \old(__return_87)=0, __return_72=0, __return_87=0, __return_main=0, main____CPAchecker_TMP_0=1, main__a=14] [L25] COND TRUE main____CPAchecker_TMP_0 != 0 [L28] float __tmp_1; [L29] __tmp_1 = main__a [L30] float InvSqrt__x; [L31] InvSqrt__x = __tmp_1 [L32] float InvSqrt__xhalf = 0.5 * InvSqrt__x; [L33] union float_int InvSqrt__i; [L34] InvSqrt__i.f = InvSqrt__x [L35] EXPR InvSqrt__i.i [L35] InvSqrt__i.i = 1597463007 - ((InvSqrt__i.i) >> 1) [L36] EXPR InvSqrt__i.f [L36] InvSqrt__x = InvSqrt__i.f [L37] InvSqrt__x = InvSqrt__x * (1.5 - ((InvSqrt__xhalf * InvSqrt__x) * InvSqrt__x)) [L38] __return_72 = InvSqrt__x [L39] main__r = __return_72 [L40] int main____CPAchecker_TMP_1; VAL [\old(__return_72)=0, \old(__return_87)=0, __return_72=6, __return_87=0, __return_main=0, __tmp_1=14, InvSqrt__i={1:0}, InvSqrt__x=6, main____CPAchecker_TMP_0=1, main__a=14, main__r=6] [L41] COND FALSE !(main__r >= 0.0) VAL [\old(__return_72)=0, \old(__return_87)=0, __return_72=6, __return_87=0, __return_main=0, __tmp_1=14, InvSqrt__i={1:0}, InvSqrt__x=6, main____CPAchecker_TMP_0=1, main__a=14, main__r=6] [L67] main____CPAchecker_TMP_1 = 0 VAL [\old(__return_72)=0, \old(__return_87)=0, __return_72=6, __return_87=0, __return_main=0, __tmp_1=14, InvSqrt__i={1:0}, InvSqrt__x=6, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__a=14, main__r=6] [L48] int __tmp_2; [L49] __tmp_2 = main____CPAchecker_TMP_1 [L50] int __VERIFIER_assert__cond; [L51] __VERIFIER_assert__cond = __tmp_2 VAL [\old(__return_72)=0, \old(__return_87)=0, __return_72=6, __return_87=0, __return_main=0, __tmp_1=14, __tmp_2=0, __VERIFIER_assert__cond=0, InvSqrt__i={1:0}, InvSqrt__x=6, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__a=14, main__r=6] [L52] COND TRUE __VERIFIER_assert__cond == 0 VAL [\old(__return_72)=0, \old(__return_87)=0, __return_72=6, __return_87=0, __return_main=0, __tmp_1=14, __tmp_2=0, __VERIFIER_assert__cond=0, InvSqrt__i={1:0}, InvSqrt__x=6, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__a=14, main__r=6] [L54] __VERIFIER_error() VAL [\old(__return_72)=0, \old(__return_87)=0, __return_72=6, __return_87=0, __return_main=0, __tmp_1=14, __tmp_2=0, __VERIFIER_assert__cond=0, InvSqrt__i={1:0}, InvSqrt__x=6, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__a=14, main__r=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 24 SDtfs, 5 SDslu, 43 SDs, 0 SdLazy, 8 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 221 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...