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/interpolation.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:12:51,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:12:51,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:12:51,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 01:12:51,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 01:12:51,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 01:12:51,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 01:12:51,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 01:12:51,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 01:12:51,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 01:12:51,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 01:12:51,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 01:12:51,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 01:12:51,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 01:12:51,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 01:12:51,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 01:12:51,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 01:12:51,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 01:12:51,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 01:12:51,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 01:12:51,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 01:12:51,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 01:12:51,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 01:12:51,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 01:12:51,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 01:12:51,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 01:12:51,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 01:12:51,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 01:12:51,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 01:12:51,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 01:12:51,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 01:12:51,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 01:12:51,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 01:12:51,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:12:51,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:12:51,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:12:51,906 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 01:12:51,929 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:12:51,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:12:51,931 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:12:51,931 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:12:51,931 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:12:51,931 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:12:51,932 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:12:51,932 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:12:51,932 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:12:51,932 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:12:51,932 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:12:51,933 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:12:51,933 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:12:51,933 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:12:51,933 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:12:51,933 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:12:51,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:12:51,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:12:51,934 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:12:51,934 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:12:51,934 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:12:51,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:12:51,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:12:51,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:12:51,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:12:51,935 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:12:51,936 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:12:51,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:12:51,936 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:12:51,964 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:12:51,979 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:12:51,985 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:12:51,986 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:12:51,987 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:12:51,987 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/interpolation.c [2019-09-08 01:12:52,067 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f03aa143c/20c05e8539f4493db02e1ca3ac5c5d2e/FLAGaa0e249fd [2019-09-08 01:12:52,517 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:12:52,519 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/interpolation.c [2019-09-08 01:12:52,525 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f03aa143c/20c05e8539f4493db02e1ca3ac5c5d2e/FLAGaa0e249fd [2019-09-08 01:12:52,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f03aa143c/20c05e8539f4493db02e1ca3ac5c5d2e [2019-09-08 01:12:52,864 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:12:52,866 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:12:52,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:12:52,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:12:52,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:12:52,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:12:52" (1/1) ... [2019-09-08 01:12:52,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5338cd07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:12:52, skipping insertion in model container [2019-09-08 01:12:52,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:12:52" (1/1) ... [2019-09-08 01:12:52,882 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:12:52,899 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:12:53,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:12:53,078 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:12:53,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:12:53,210 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:12:53,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:12:53 WrapperNode [2019-09-08 01:12:53,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:12:53,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:12:53,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:12:53,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:12:53,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:12:53" (1/1) ... [2019-09-08 01:12:53,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:12:53" (1/1) ... [2019-09-08 01:12:53,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:12:53" (1/1) ... [2019-09-08 01:12:53,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:12:53" (1/1) ... [2019-09-08 01:12:53,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:12:53" (1/1) ... [2019-09-08 01:12:53,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:12:53" (1/1) ... [2019-09-08 01:12:53,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:12:53" (1/1) ... [2019-09-08 01:12:53,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:12:53,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:12:53,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:12:53,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:12:53,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:12:53" (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 01:12:53,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:12:53,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:12:53,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-08 01:12:53,302 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:12:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:12:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-09-08 01:12:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 01:12:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-08 01:12:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:12:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 01:12:53,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-09-08 01:12:53,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-08 01:12:53,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 01:12:53,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:12:53,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:12:53,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-08 01:12:53,578 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:12:53,578 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-08 01:12:53,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:12:53 BoogieIcfgContainer [2019-09-08 01:12:53,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:12:53,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:12:53,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:12:53,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:12:53,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:12:52" (1/3) ... [2019-09-08 01:12:53,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b57188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:12:53, skipping insertion in model container [2019-09-08 01:12:53,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:12:53" (2/3) ... [2019-09-08 01:12:53,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b57188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:12:53, skipping insertion in model container [2019-09-08 01:12:53,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:12:53" (3/3) ... [2019-09-08 01:12:53,587 INFO L109 eAbstractionObserver]: Analyzing ICFG interpolation.c [2019-09-08 01:12:53,597 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:12:53,606 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:12:53,623 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:12:53,657 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:12:53,658 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:12:53,658 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:12:53,658 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:12:53,658 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:12:53,658 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:12:53,659 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:12:53,659 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:12:53,659 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:12:53,674 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-09-08 01:12:53,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-08 01:12:53,679 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:12:53,680 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:12:53,682 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:12:53,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:12:53,686 INFO L82 PathProgramCache]: Analyzing trace with hash -623443718, now seen corresponding path program 1 times [2019-09-08 01:12:53,688 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:12:53,688 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:12:53,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:12:53,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:12:53,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:12:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:12:53,852 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 01:12:53,854 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:12:53,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 01:12:53,859 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 01:12:53,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 01:12:53,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 01:12:53,876 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2019-09-08 01:12:53,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:12:53,931 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2019-09-08 01:12:53,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 01:12:53,933 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-09-08 01:12:53,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:12:53,952 INFO L225 Difference]: With dead ends: 45 [2019-09-08 01:12:53,953 INFO L226 Difference]: Without dead ends: 22 [2019-09-08 01:12:53,960 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 01:12:53,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-09-08 01:12:54,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2019-09-08 01:12:54,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-09-08 01:12:54,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-09-08 01:12:54,022 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 14 [2019-09-08 01:12:54,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:12:54,024 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-09-08 01:12:54,024 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 01:12:54,025 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-09-08 01:12:54,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-08 01:12:54,028 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:12:54,029 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:12:54,029 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:12:54,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:12:54,030 INFO L82 PathProgramCache]: Analyzing trace with hash -618014859, now seen corresponding path program 1 times [2019-09-08 01:12:54,030 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:12:54,030 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:12:54,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:12:54,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:12:54,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:12:54,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:12:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:12:54,168 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 01:12:54,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 01:12:54 BoogieIcfgContainer [2019-09-08 01:12:54,214 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 01:12:54,219 INFO L168 Benchmark]: Toolchain (without parser) took 1350.65 ms. Allocated memory was 141.0 MB in the beginning and 201.3 MB in the end (delta: 60.3 MB). Free memory was 88.2 MB in the beginning and 136.6 MB in the end (delta: -48.5 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2019-09-08 01:12:54,220 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 107.0 MB in the beginning and 106.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 01:12:54,223 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.76 ms. Allocated memory was 141.0 MB in the beginning and 201.3 MB in the end (delta: 60.3 MB). Free memory was 88.0 MB in the beginning and 179.2 MB in the end (delta: -91.2 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2019-09-08 01:12:54,225 INFO L168 Benchmark]: Boogie Preprocessor took 37.66 ms. Allocated memory is still 201.3 MB. Free memory was 179.2 MB in the beginning and 177.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-09-08 01:12:54,226 INFO L168 Benchmark]: RCFGBuilder took 330.93 ms. Allocated memory is still 201.3 MB. Free memory was 177.0 MB in the beginning and 162.7 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2019-09-08 01:12:54,227 INFO L168 Benchmark]: TraceAbstraction took 633.77 ms. Allocated memory is still 201.3 MB. Free memory was 162.1 MB in the beginning and 136.6 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2019-09-08 01:12:54,238 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 141.0 MB. Free memory was 107.0 MB in the beginning and 106.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 343.76 ms. Allocated memory was 141.0 MB in the beginning and 201.3 MB in the end (delta: 60.3 MB). Free memory was 88.0 MB in the beginning and 179.2 MB in the end (delta: -91.2 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.66 ms. Allocated memory is still 201.3 MB. Free memory was 179.2 MB in the beginning and 177.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 330.93 ms. Allocated memory is still 201.3 MB. Free memory was 177.0 MB in the beginning and 162.7 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 633.77 ms. Allocated memory is still 201.3 MB. Free memory was 162.1 MB in the beginning and 136.6 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 21, overapproximation of to_real at line 10, overapproximation of someBinaryArithmeticFLOAToperation at line 19. Possible FailurePath: [L8] int i; [L9] float z, t; [L10] float min[] = { 5, 10, 12, 30, 150 }; [L11] float max[] = { 10, 12, 30, 150, 300 }; [L13] t = __VERIFIER_nondet_float() [L14] EXPR min[0] [L14] t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1] [L14] EXPR max[sizeof(max) / sizeof(max[0]) - 1] [L14] t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1] VAL [max={-1:0}, max[sizeof(max) / sizeof(max[0]) - 1]=24, min={1:0}, min[0]=23, t=22] [L16] i = 0 VAL [i=0, max={-1:0}, min={1:0}, t=22] [L16] COND TRUE i < sizeof(min) / sizeof(min[0]) [L17] EXPR max[i] VAL [i=0, max={-1:0}, max[i]=26, min={1:0}, t=22] [L17] COND TRUE t <= max[i] [L19] EXPR min[i] [L19] EXPR max[i] [L19] EXPR min[i] [L19] z = (t - min[i]) / (max[i] - min[i]) [L21] CALL __VERIFIER_assert(z >= 0.f && z <= 1.f) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L4] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 25 SDtfs, 6 SDslu, 21 SDs, 0 SdLazy, 6 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 195 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...