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/exp_loop.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:10:44,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:10:44,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:10:44,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-08 01:10:44,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 01:10:44,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 01:10:44,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 01:10:44,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 01:10:44,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 01:10:44,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 01:10:44,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 01:10:44,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 01:10:44,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:10:44,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:10:44,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:10:44,387 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 01:10:44,415 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:10:44,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:10:44,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:10:44,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:10:44,418 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:10:44,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:10:44,418 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:10:44,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:10:44,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:10:44,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:10:44,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:10:44,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:10:44,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:10:44,420 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:10:44,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:10:44,421 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:10:44,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:10:44,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:10:44,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:10:44,422 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:10:44,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:10:44,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:10:44,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:10:44,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:10:44,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:10:44,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:10:44,423 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:10:44,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:10:44,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:10:44,475 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:10:44,488 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:10:44,492 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:10:44,493 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:10:44,493 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:10:44,494 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/exp_loop.c [2019-09-08 01:10:44,570 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dbf989ce/bf80480b9a654f3d86d895e80ab3761f/FLAGf144f7551 [2019-09-08 01:10:45,052 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:10:45,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/exp_loop.c [2019-09-08 01:10:45,060 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dbf989ce/bf80480b9a654f3d86d895e80ab3761f/FLAGf144f7551 [2019-09-08 01:10:45,433 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dbf989ce/bf80480b9a654f3d86d895e80ab3761f [2019-09-08 01:10:45,444 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:10:45,445 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:10:45,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:10:45,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:10:45,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:10:45,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:10:45" (1/1) ... [2019-09-08 01:10:45,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fbe1c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:10:45, skipping insertion in model container [2019-09-08 01:10:45,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:10:45" (1/1) ... [2019-09-08 01:10:45,462 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:10:45,480 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:10:45,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:10:45,692 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:10:45,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:10:45,827 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:10:45,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:10:45 WrapperNode [2019-09-08 01:10:45,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:10:45,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:10:45,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:10:45,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:10:45,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:10:45" (1/1) ... [2019-09-08 01:10:45,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:10:45" (1/1) ... [2019-09-08 01:10:45,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:10:45" (1/1) ... [2019-09-08 01:10:45,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:10:45" (1/1) ... [2019-09-08 01:10:45,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:10:45" (1/1) ... [2019-09-08 01:10:45,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:10:45" (1/1) ... [2019-09-08 01:10:45,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:10:45" (1/1) ... [2019-09-08 01:10:45,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:10:45,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:10:45,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:10:45,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:10:45,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:10:45" (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 01:10:45,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:10:45,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:10:45,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-08 01:10:45,922 INFO L138 BoogieDeclarations]: Found implementation of procedure FABS [2019-09-08 01:10:45,922 INFO L138 BoogieDeclarations]: Found implementation of procedure FREXP [2019-09-08 01:10:45,923 INFO L138 BoogieDeclarations]: Found implementation of procedure LDEXP [2019-09-08 01:10:45,923 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:10:45,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:10:45,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-09-08 01:10:45,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 01:10:45,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-08 01:10:45,923 INFO L130 BoogieDeclarations]: Found specification of procedure FABS [2019-09-08 01:10:45,924 INFO L130 BoogieDeclarations]: Found specification of procedure FREXP [2019-09-08 01:10:45,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 01:10:45,924 INFO L130 BoogieDeclarations]: Found specification of procedure LDEXP [2019-09-08 01:10:45,924 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:10:45,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 01:10:45,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 01:10:45,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 01:10:45,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:10:45,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:10:46,298 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:10:46,298 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-08 01:10:46,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:10:46 BoogieIcfgContainer [2019-09-08 01:10:46,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:10:46,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:10:46,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:10:46,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:10:46,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:10:45" (1/3) ... [2019-09-08 01:10:46,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7096c0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:10:46, skipping insertion in model container [2019-09-08 01:10:46,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:10:45" (2/3) ... [2019-09-08 01:10:46,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7096c0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:10:46, skipping insertion in model container [2019-09-08 01:10:46,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:10:46" (3/3) ... [2019-09-08 01:10:46,313 INFO L109 eAbstractionObserver]: Analyzing ICFG exp_loop.c [2019-09-08 01:10:46,323 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:10:46,330 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:10:46,347 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:10:46,385 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:10:46,386 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:10:46,386 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:10:46,386 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:10:46,386 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:10:46,387 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:10:46,387 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:10:46,387 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:10:46,387 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:10:46,404 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2019-09-08 01:10:46,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-09-08 01:10:46,410 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:10:46,412 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:10:46,414 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:10:46,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:10:46,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1019125231, now seen corresponding path program 1 times [2019-09-08 01:10:46,422 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:10:46,423 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:10:46,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:10:46,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:10:46,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:10:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:10:46,624 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 01:10:46,628 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:10:46,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 01:10:46,633 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 01:10:46,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 01:10:46,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 01:10:46,650 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2019-09-08 01:10:46,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:10:46,716 INFO L93 Difference]: Finished difference Result 70 states and 90 transitions. [2019-09-08 01:10:46,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 01:10:46,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2019-09-08 01:10:46,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:10:46,730 INFO L225 Difference]: With dead ends: 70 [2019-09-08 01:10:46,730 INFO L226 Difference]: Without dead ends: 37 [2019-09-08 01:10:46,734 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 01:10:46,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-09-08 01:10:46,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-09-08 01:10:46,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-09-08 01:10:46,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2019-09-08 01:10:46,774 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 32 [2019-09-08 01:10:46,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:10:46,774 INFO L475 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2019-09-08 01:10:46,775 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 01:10:46,775 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2019-09-08 01:10:46,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-09-08 01:10:46,776 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:10:46,777 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:10:46,777 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:10:46,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:10:46,778 INFO L82 PathProgramCache]: Analyzing trace with hash -990094289, now seen corresponding path program 1 times [2019-09-08 01:10:46,778 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:10:46,778 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:10:46,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:10:46,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:10:46,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:10:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:10:46,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:10:46,878 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 01:10:46,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 01:10:46 BoogieIcfgContainer [2019-09-08 01:10:46,919 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 01:10:46,922 INFO L168 Benchmark]: Toolchain (without parser) took 1475.76 ms. Allocated memory was 134.7 MB in the beginning and 201.3 MB in the end (delta: 66.6 MB). Free memory was 89.1 MB in the beginning and 128.8 MB in the end (delta: -39.7 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2019-09-08 01:10:46,924 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 134.7 MB. Free memory was 107.9 MB in the beginning and 107.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 01:10:46,925 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.58 ms. Allocated memory was 134.7 MB in the beginning and 201.3 MB in the end (delta: 66.6 MB). Free memory was 88.9 MB in the beginning and 178.0 MB in the end (delta: -89.0 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2019-09-08 01:10:46,926 INFO L168 Benchmark]: Boogie Preprocessor took 43.45 ms. Allocated memory is still 201.3 MB. Free memory was 178.0 MB in the beginning and 175.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-09-08 01:10:46,928 INFO L168 Benchmark]: RCFGBuilder took 426.17 ms. Allocated memory is still 201.3 MB. Free memory was 175.7 MB in the beginning and 157.9 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. [2019-09-08 01:10:46,929 INFO L168 Benchmark]: TraceAbstraction took 618.43 ms. Allocated memory is still 201.3 MB. Free memory was 157.9 MB in the beginning and 128.8 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. [2019-09-08 01:10:46,933 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 134.7 MB. Free memory was 107.9 MB in the beginning and 107.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 382.58 ms. Allocated memory was 134.7 MB in the beginning and 201.3 MB in the end (delta: 66.6 MB). Free memory was 88.9 MB in the beginning and 178.0 MB in the end (delta: -89.0 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.45 ms. Allocated memory is still 201.3 MB. Free memory was 178.0 MB in the beginning and 175.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 426.17 ms. Allocated memory is still 201.3 MB. Free memory was 175.7 MB in the beginning and 157.9 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 618.43 ms. Allocated memory is still 201.3 MB. Free memory was 157.9 MB in the beginning and 128.8 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 9]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 75, overapproximation of someBinaryFLOATComparisonOperation at line 75, overapproximation of someBinaryArithmeticFLOAToperation at line 61. Possible FailurePath: [L66] float a, b, c; [L67] int e; [L69] a = __VERIFIER_nondet_float() [L72] CALL, EXPR FREXP(a, &e) VAL [\old(d)=7, e={1:0}] [L20] int x; [L21] float r; VAL [\old(d)=7, d=7, e={1:0}, e={1:0}] [L22] CALL, EXPR FABS(d) VAL [\old(d)=7] [L14] COND TRUE d >= 0.f [L14] return d; VAL [\old(d)=7, \result=7, d=7] [L22] RET, EXPR FABS(d) VAL [\old(d)=7, d=7, e={1:0}, e={1:0}, FABS(d)=7] [L22] float dd = FABS(d); [L24] COND TRUE dd >= 1.f [L25] x = 1 [L26] r = 2.f VAL [\old(d)=7, d=7, dd=7, e={1:0}, e={1:0}, r=2, x=1] [L27] COND FALSE !(r <= dd) VAL [\old(d)=7, d=7, dd=7, e={1:0}, e={1:0}, r=2, x=1] [L41] *e = x [L42] return dd / r; VAL [\old(d)=7, d=7, dd=7, e={1:0}, e={1:0}, r=2, x=1] [L72] RET, EXPR FREXP(a, &e) VAL [a=7, e={1:0}, FREXP(a, &e)=9] [L72] b = FREXP(a, &e) [L73] EXPR \read(e) VAL [\read(e)=1, a=7, b=9, e={1:0}] [L73] CALL, EXPR LDEXP(b, e/2) VAL [\old(d)=9, \old(e)=0] [L47] float x = 1.; VAL [\old(d)=9, \old(e)=0, d=9, e=0, x=1] [L49] COND TRUE e >= 0 VAL [\old(d)=9, \old(e)=0, d=9, e=0, x=1] [L50] COND FALSE !(e > 0) VAL [\old(d)=9, \old(e)=0, d=9, e=0, x=1] [L61] return d * x; VAL [\old(d)=9, \old(e)=0, d=9, e=0, x=1] [L73] RET, EXPR LDEXP(b, e/2) VAL [\read(e)=1, a=7, b=9, e={1:0}, LDEXP(b, e/2)=6] [L73] c = LDEXP(b, e/2) [L75] CALL __VERIFIER_assert(c >= 0.f && c <= 1e6) VAL [\old(cond)=0] [L9] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L9] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 43 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 48 SDtfs, 0 SDslu, 42 SDs, 0 SdLazy, 7 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=43occurred 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, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 1085 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...