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/sqrt_Householder_constant.c.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:15:43,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:15:43,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:15:43,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 01:15:43,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 01:15:43,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 01:15:43,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 01:15:43,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 01:15:43,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 01:15:43,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 01:15:43,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 01:15:43,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 01:15:43,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 01:15:43,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 01:15:43,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 01:15:43,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 01:15:43,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 01:15:43,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 01:15:43,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 01:15:43,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 01:15:43,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 01:15:43,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 01:15:43,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 01:15:43,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 01:15:43,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 01:15:43,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:15:43,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:15:43,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:15:43,664 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 01:15:43,679 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:15:43,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:15:43,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:15:43,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:15:43,681 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:15:43,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:15:43,681 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:15:43,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:15:43,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:15:43,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:15:43,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:15:43,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:15:43,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:15:43,683 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:15:43,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:15:43,683 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:15:43,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:15:43,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:15:43,684 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:15:43,684 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:15:43,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:15:43,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:15:43,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:15:43,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:15:43,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:15:43,685 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:15:43,685 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:15:43,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:15:43,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:15:43,714 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:15:43,729 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:15:43,734 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:15:43,735 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:15:43,736 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:15:43,736 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2019-09-08 01:15:43,796 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf5c0e402/fe4977b5182e4ace8ede613ac1721087/FLAG1fb4a56bf [2019-09-08 01:15:44,282 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:15:44,283 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2019-09-08 01:15:44,291 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf5c0e402/fe4977b5182e4ace8ede613ac1721087/FLAG1fb4a56bf [2019-09-08 01:15:44,654 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf5c0e402/fe4977b5182e4ace8ede613ac1721087 [2019-09-08 01:15:44,668 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:15:44,669 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:15:44,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:15:44,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:15:44,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:15:44,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:15:44" (1/1) ... [2019-09-08 01:15:44,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e08cfec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:15:44, skipping insertion in model container [2019-09-08 01:15:44,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:15:44" (1/1) ... [2019-09-08 01:15:44,688 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:15:44,712 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:15:44,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:15:44,922 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:15:44,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:15:45,055 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:15:45,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:15:45 WrapperNode [2019-09-08 01:15:45,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:15:45,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:15:45,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:15:45,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:15:45,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:15:45" (1/1) ... [2019-09-08 01:15:45,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:15:45" (1/1) ... [2019-09-08 01:15:45,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:15:45" (1/1) ... [2019-09-08 01:15:45,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:15:45" (1/1) ... [2019-09-08 01:15:45,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:15:45" (1/1) ... [2019-09-08 01:15:45,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:15:45" (1/1) ... [2019-09-08 01:15:45,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:15:45" (1/1) ... [2019-09-08 01:15:45,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:15:45,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:15:45,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:15:45,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:15:45,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:15:45" (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 01:15:45,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:15:45,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:15:45,145 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:15:45,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:15:45,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2019-09-08 01:15:45,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 01:15:45,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-08 01:15:45,146 INFO L130 BoogieDeclarations]: Found specification of procedure SqrtR [2019-09-08 01:15:45,146 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:15:45,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:15:45,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:15:45,387 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:15:45,388 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-08 01:15:45,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:15:45 BoogieIcfgContainer [2019-09-08 01:15:45,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:15:45,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:15:45,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:15:45,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:15:45,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:15:44" (1/3) ... [2019-09-08 01:15:45,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec41662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:15:45, skipping insertion in model container [2019-09-08 01:15:45,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:15:45" (2/3) ... [2019-09-08 01:15:45,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec41662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:15:45, skipping insertion in model container [2019-09-08 01:15:45,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:15:45" (3/3) ... [2019-09-08 01:15:45,398 INFO L109 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_constant.c.p+cfa-reducer.c [2019-09-08 01:15:45,411 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:15:45,422 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:15:45,443 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:15:45,488 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:15:45,489 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:15:45,490 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:15:45,490 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:15:45,490 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:15:45,490 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:15:45,490 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:15:45,490 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:15:45,491 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:15:45,512 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-09-08 01:15:45,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-08 01:15:45,519 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:15:45,521 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:15:45,523 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:15:45,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:15:45,529 INFO L82 PathProgramCache]: Analyzing trace with hash 276824482, now seen corresponding path program 1 times [2019-09-08 01:15:45,531 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:15:45,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:15:45,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:15:45,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:15:45,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:15:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:15:45,706 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 01:15:45,709 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:15:45,710 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 01:15:45,715 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 01:15:45,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 01:15:45,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 01:15:45,728 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 4 states. [2019-09-08 01:15:45,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:15:45,833 INFO L93 Difference]: Finished difference Result 75 states and 104 transitions. [2019-09-08 01:15:45,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 01:15:45,835 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-09-08 01:15:45,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:15:45,845 INFO L225 Difference]: With dead ends: 75 [2019-09-08 01:15:45,845 INFO L226 Difference]: Without dead ends: 46 [2019-09-08 01:15:45,848 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 01:15:45,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-09-08 01:15:45,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 27. [2019-09-08 01:15:45,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-09-08 01:15:45,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2019-09-08 01:15:45,888 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 18 [2019-09-08 01:15:45,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:15:45,889 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2019-09-08 01:15:45,889 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 01:15:45,890 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2019-09-08 01:15:45,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-08 01:15:45,891 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:15:45,891 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:15:45,891 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:15:45,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:15:45,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1763341697, now seen corresponding path program 1 times [2019-09-08 01:15:45,892 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:15:45,892 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:15:45,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:15:45,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:15:45,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:15:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:15:45,946 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 01:15:45,946 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:15:45,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 01:15:45,948 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 01:15:45,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 01:15:45,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 01:15:45,950 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 4 states. [2019-09-08 01:15:46,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:15:46,020 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2019-09-08 01:15:46,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 01:15:46,021 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-09-08 01:15:46,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:15:46,023 INFO L225 Difference]: With dead ends: 50 [2019-09-08 01:15:46,023 INFO L226 Difference]: Without dead ends: 48 [2019-09-08 01:15:46,024 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 01:15:46,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-09-08 01:15:46,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 29. [2019-09-08 01:15:46,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-09-08 01:15:46,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2019-09-08 01:15:46,039 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 18 [2019-09-08 01:15:46,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:15:46,039 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2019-09-08 01:15:46,039 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 01:15:46,040 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2019-09-08 01:15:46,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-08 01:15:46,042 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:15:46,042 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:15:46,042 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:15:46,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:15:46,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1747284348, now seen corresponding path program 1 times [2019-09-08 01:15:46,043 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:15:46,043 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:15:46,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:15:46,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:15:46,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:15:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:15:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:15:46,115 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 01:15:46,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 01:15:46 BoogieIcfgContainer [2019-09-08 01:15:46,145 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 01:15:46,148 INFO L168 Benchmark]: Toolchain (without parser) took 1477.58 ms. Allocated memory was 132.6 MB in the beginning and 199.8 MB in the end (delta: 67.1 MB). Free memory was 88.3 MB in the beginning and 123.4 MB in the end (delta: -35.1 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. [2019-09-08 01:15:46,149 INFO L168 Benchmark]: CDTParser took 0.20 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 01:15:46,150 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.37 ms. Allocated memory was 132.6 MB in the beginning and 199.8 MB in the end (delta: 67.1 MB). Free memory was 88.1 MB in the beginning and 176.8 MB in the end (delta: -88.7 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2019-09-08 01:15:46,151 INFO L168 Benchmark]: Boogie Preprocessor took 34.80 ms. Allocated memory is still 199.8 MB. Free memory was 176.8 MB in the beginning and 174.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-09-08 01:15:46,152 INFO L168 Benchmark]: RCFGBuilder took 296.42 ms. Allocated memory is still 199.8 MB. Free memory was 174.9 MB in the beginning and 160.3 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2019-09-08 01:15:46,153 INFO L168 Benchmark]: TraceAbstraction took 754.93 ms. Allocated memory is still 199.8 MB. Free memory was 160.3 MB in the beginning and 123.4 MB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. [2019-09-08 01:15:46,157 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 386.37 ms. Allocated memory was 132.6 MB in the beginning and 199.8 MB in the end (delta: 67.1 MB). Free memory was 88.1 MB in the beginning and 176.8 MB in the end (delta: -88.7 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.80 ms. Allocated memory is still 199.8 MB. Free memory was 176.8 MB in the beginning and 174.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 296.42 ms. Allocated memory is still 199.8 MB. Free memory was 174.9 MB in the beginning and 160.3 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 754.93 ms. Allocated memory is still 199.8 MB. Free memory was 160.3 MB in the beginning and 123.4 MB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 96]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 83, overapproximation of someBinaryArithmeticDOUBLEoperation at line 80, overapproximation of someUnaryDOUBLEoperation at line 37. Possible FailurePath: [L1] int __return_main; [L6] double _EPS = 0.0000010; [L9] double __return_125; VAL [\old(__return_125)=2, \old(__return_main)=4, \old(_EPS)=3, __return_125=0, __return_main=0, _EPS=1/1000000] [L12] double main__d; [L13] double main__r; [L14] main__d = 1.0 VAL [\old(__return_125)=0, __return_125=0, __return_main=0, _EPS=1/1000000, main__d=1] [L16] COND TRUE main__d <= 20.0 [L19] double __tmp_1; [L20] __tmp_1 = main__d [L21] double SqrtR__Input; [L22] SqrtR__Input = __tmp_1 [L23] double SqrtR__xn; [L24] double SqrtR__xnp1; [L25] double SqrtR__residu; [L26] double SqrtR__lsup; [L27] double SqrtR__linf; [L28] int SqrtR__i; [L29] int SqrtR__cond; VAL [\old(__return_125)=0, __return_125=0, __return_main=0, __tmp_1=1, _EPS=1/1000000, main__d=1, SqrtR__Input=1] [L30] COND FALSE !(SqrtR__Input <= 1.0) [L134] SqrtR__xn = 1.0 / SqrtR__Input VAL [\old(__return_125)=0, __return_125=0, __return_main=0, __tmp_1=1, _EPS=1/1000000, main__d=1, SqrtR__Input=1] [L34] SqrtR__xnp1 = SqrtR__xn [L35] SqrtR__residu = (2.0 * _EPS) * (SqrtR__xn + SqrtR__xnp1) [L36] SqrtR__lsup = _EPS * (SqrtR__xn + SqrtR__xnp1) [L37] SqrtR__linf = -SqrtR__lsup [L38] int SqrtR____CPAchecker_TMP_0; VAL [\old(__return_125)=0, __return_125=0, __return_main=0, __tmp_1=1, _EPS=1/1000000, main__d=1, SqrtR__Input=1, SqrtR__xn=5, SqrtR__xnp1=5] [L39] COND FALSE !(SqrtR__residu > SqrtR__lsup) VAL [\old(__return_125)=0, __return_125=0, __return_main=0, __tmp_1=1, _EPS=1/1000000, main__d=1, SqrtR__Input=1, SqrtR__xn=5, SqrtR__xnp1=5] [L121] COND FALSE !(SqrtR__residu < SqrtR__linf) [L127] SqrtR____CPAchecker_TMP_0 = 0 VAL [\old(__return_125)=0, __return_125=0, __return_main=0, __tmp_1=1, _EPS=1/1000000, main__d=1, SqrtR____CPAchecker_TMP_0=0, SqrtR__Input=1, SqrtR__xn=5, SqrtR__xnp1=5] [L44] SqrtR__cond = SqrtR____CPAchecker_TMP_0 [L45] SqrtR__i = 0 VAL [\old(__return_125)=0, __return_125=0, __return_main=0, __tmp_1=1, _EPS=1/1000000, main__d=1, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0, SqrtR__Input=1, SqrtR__xn=5, SqrtR__xnp1=5] [L47] COND FALSE !(!(SqrtR__cond == 0)) [L80] __return_125 = 1.0 / SqrtR__xnp1 [L81] main__r = __return_125 [L82] int main____CPAchecker_TMP_0; VAL [\old(__return_125)=0, __return_125=6, __return_main=0, __tmp_1=1, _EPS=1/1000000, main__d=1, main__r=6, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0, SqrtR__Input=1, SqrtR__xn=5, SqrtR__xnp1=5] [L83] COND FALSE !(main__r >= 1.0) VAL [\old(__return_125)=0, __return_125=6, __return_main=0, __tmp_1=1, _EPS=1/1000000, main__d=1, main__r=6, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0, SqrtR__Input=1, SqrtR__xn=5, SqrtR__xnp1=5] [L109] main____CPAchecker_TMP_0 = 0 VAL [\old(__return_125)=0, __return_125=6, __return_main=0, __tmp_1=1, _EPS=1/1000000, main____CPAchecker_TMP_0=0, main__d=1, main__r=6, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0, SqrtR__Input=1, SqrtR__xn=5, SqrtR__xnp1=5] [L90] int __tmp_2; [L91] __tmp_2 = main____CPAchecker_TMP_0 [L92] int __VERIFIER_assert__cond; [L93] __VERIFIER_assert__cond = __tmp_2 VAL [\old(__return_125)=0, __return_125=6, __return_main=0, __tmp_1=1, __tmp_2=0, __VERIFIER_assert__cond=0, _EPS=1/1000000, main____CPAchecker_TMP_0=0, main__d=1, main__r=6, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0, SqrtR__Input=1, SqrtR__xn=5, SqrtR__xnp1=5] [L94] COND TRUE __VERIFIER_assert__cond == 0 VAL [\old(__return_125)=0, __return_125=6, __return_main=0, __tmp_1=1, __tmp_2=0, __VERIFIER_assert__cond=0, _EPS=1/1000000, main____CPAchecker_TMP_0=0, main__d=1, main__r=6, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0, SqrtR__Input=1, SqrtR__xn=5, SqrtR__xnp1=5] [L96] __VERIFIER_error() VAL [\old(__return_125)=0, __return_125=6, __return_main=0, __tmp_1=1, __tmp_2=0, __VERIFIER_assert__cond=0, _EPS=1/1000000, main____CPAchecker_TMP_0=0, main__d=1, main__r=6, SqrtR____CPAchecker_TMP_0=0, SqrtR__cond=0, SqrtR__i=0, SqrtR__Input=1, SqrtR__xn=5, SqrtR__xnp1=5] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. UNSAFE Result, 0.6s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 106 SDtfs, 79 SDslu, 148 SDs, 0 SdLazy, 27 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 2 MinimizatonAttempts, 38 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 714 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...