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-newlib/float_req_bl_1011a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:23:13,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:23:13,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:23:13,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 01:23:13,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 01:23:13,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 01:23:13,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 01:23:13,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 01:23:13,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 01:23:13,345 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 01:23:13,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 01:23:13,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 01:23:13,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 01:23:13,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 01:23:13,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 01:23:13,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 01:23:13,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 01:23:13,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 01:23:13,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 01:23:13,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 01:23:13,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 01:23:13,367 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 01:23:13,368 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 01:23:13,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 01:23:13,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 01:23:13,373 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 01:23:13,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 01:23:13,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 01:23:13,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 01:23:13,376 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 01:23:13,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 01:23:13,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 01:23:13,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 01:23:13,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:23:13,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:23:13,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:23:13,382 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 01:23:13,406 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:23:13,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:23:13,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:23:13,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:23:13,409 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:23:13,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:23:13,409 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:23:13,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:23:13,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:23:13,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:23:13,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:23:13,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:23:13,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:23:13,410 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:23:13,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:23:13,411 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:23:13,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:23:13,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:23:13,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:23:13,411 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:23:13,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:23:13,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:23:13,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:23:13,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:23:13,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:23:13,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:23:13,413 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:23:13,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:23:13,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:23:13,456 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:23:13,468 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:23:13,473 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:23:13,475 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:23:13,481 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:23:13,482 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1011a.c [2019-09-08 01:23:13,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e5daf87d/d1493990dba547c7982f756e4eff2519/FLAGa60f04951 [2019-09-08 01:23:14,045 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:23:14,046 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1011a.c [2019-09-08 01:23:14,053 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e5daf87d/d1493990dba547c7982f756e4eff2519/FLAGa60f04951 [2019-09-08 01:23:14,449 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e5daf87d/d1493990dba547c7982f756e4eff2519 [2019-09-08 01:23:14,457 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:23:14,458 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:23:14,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:14,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:23:14,463 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:23:14,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:14" (1/1) ... [2019-09-08 01:23:14,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14ce0c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:14, skipping insertion in model container [2019-09-08 01:23:14,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:14" (1/1) ... [2019-09-08 01:23:14,474 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:23:14,490 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:23:14,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:14,666 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:23:14,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:14,711 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:23:14,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:14 WrapperNode [2019-09-08 01:23:14,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:14,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:23:14,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:23:14,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:23:14,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:14" (1/1) ... [2019-09-08 01:23:14,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:14" (1/1) ... [2019-09-08 01:23:14,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:14" (1/1) ... [2019-09-08 01:23:14,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:14" (1/1) ... [2019-09-08 01:23:14,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:14" (1/1) ... [2019-09-08 01:23:14,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:14" (1/1) ... [2019-09-08 01:23:14,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:14" (1/1) ... [2019-09-08 01:23:14,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:23:14,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:23:14,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:23:14,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:23:14,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:23:14,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:23:14,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:23:14,895 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2019-09-08 01:23:14,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2019-09-08 01:23:14,895 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:23:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:23:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-09-08 01:23:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2019-09-08 01:23:14,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 01:23:14,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-08 01:23:14,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 01:23:14,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 01:23:14,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 01:23:14,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-08 01:23:14,897 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2019-09-08 01:23:14,897 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:23:14,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:23:14,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:23:15,214 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:23:15,214 INFO L283 CfgBuilder]: Removed 6 assume(true) statements. [2019-09-08 01:23:15,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:15 BoogieIcfgContainer [2019-09-08 01:23:15,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:23:15,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:23:15,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:23:15,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:23:15,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:23:14" (1/3) ... [2019-09-08 01:23:15,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71811b85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:15, skipping insertion in model container [2019-09-08 01:23:15,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:14" (2/3) ... [2019-09-08 01:23:15,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71811b85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:15, skipping insertion in model container [2019-09-08 01:23:15,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:15" (3/3) ... [2019-09-08 01:23:15,223 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1011a.c [2019-09-08 01:23:15,230 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:23:15,237 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:23:15,256 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:23:15,281 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:23:15,282 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:23:15,282 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:23:15,282 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:23:15,282 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:23:15,283 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:23:15,283 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:23:15,283 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:23:15,283 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:23:15,299 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-09-08 01:23:15,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-08 01:23:15,305 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:15,306 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:23:15,308 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:15,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:15,313 INFO L82 PathProgramCache]: Analyzing trace with hash -2014572178, now seen corresponding path program 1 times [2019-09-08 01:23:15,314 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:15,315 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:15,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:15,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:15,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:15,451 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 01:23:15,454 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:23:15,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 01:23:15,457 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 01:23:15,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 01:23:15,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:23:15,477 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-09-08 01:23:15,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:23:15,506 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2019-09-08 01:23:15,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 01:23:15,507 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-09-08 01:23:15,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:23:15,517 INFO L225 Difference]: With dead ends: 56 [2019-09-08 01:23:15,517 INFO L226 Difference]: Without dead ends: 28 [2019-09-08 01:23:15,524 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:23:15,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-09-08 01:23:15,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-09-08 01:23:15,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-09-08 01:23:15,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2019-09-08 01:23:15,590 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 17 [2019-09-08 01:23:15,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:23:15,591 INFO L475 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2019-09-08 01:23:15,591 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 01:23:15,591 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2019-09-08 01:23:15,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-08 01:23:15,594 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:15,594 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:23:15,595 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:15,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:15,596 INFO L82 PathProgramCache]: Analyzing trace with hash 516358161, now seen corresponding path program 1 times [2019-09-08 01:23:15,596 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:15,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:15,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:15,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:15,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:23:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:23:15,713 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 01:23:15,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 01:23:15 BoogieIcfgContainer [2019-09-08 01:23:15,760 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 01:23:15,764 INFO L168 Benchmark]: Toolchain (without parser) took 1303.38 ms. Allocated memory was 133.7 MB in the beginning and 200.3 MB in the end (delta: 66.6 MB). Free memory was 89.7 MB in the beginning and 134.4 MB in the end (delta: -44.7 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:15,766 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 133.7 MB. Free memory is still 107.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-08 01:23:15,767 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.51 ms. Allocated memory is still 133.7 MB. Free memory was 89.7 MB in the beginning and 78.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:15,769 INFO L168 Benchmark]: Boogie Preprocessor took 128.25 ms. Allocated memory was 133.7 MB in the beginning and 200.3 MB in the end (delta: 66.6 MB). Free memory was 78.9 MB in the beginning and 176.1 MB in the end (delta: -97.3 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:15,772 INFO L168 Benchmark]: RCFGBuilder took 370.08 ms. Allocated memory is still 200.3 MB. Free memory was 175.3 MB in the beginning and 159.3 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:15,773 INFO L168 Benchmark]: TraceAbstraction took 543.62 ms. Allocated memory is still 200.3 MB. Free memory was 158.4 MB in the beginning and 134.4 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:15,784 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 133.7 MB. Free memory is still 107.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 252.51 ms. Allocated memory is still 133.7 MB. Free memory was 89.7 MB in the beginning and 78.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.25 ms. Allocated memory was 133.7 MB in the beginning and 200.3 MB in the end (delta: 66.6 MB). Free memory was 78.9 MB in the beginning and 176.1 MB in the end (delta: -97.3 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 370.08 ms. Allocated memory is still 200.3 MB. Free memory was 175.3 MB in the beginning and 159.3 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 543.62 ms. Allocated memory is still 200.3 MB. Free memory was 158.4 MB in the beginning and 134.4 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 50]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 49, overapproximation of bitwiseAnd at line 21. Possible FailurePath: [L45] float x = 0.0f; VAL [x=0] [L46] CALL, EXPR fabs_float(x) VAL [\old(x)=0] [L13] __uint32_t ix; VAL [\old(x)=0, x=0] [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (ix) = gf_u.word [L20] ieee_float_shape_type sf_u; [L21] sf_u.word = (ix & 0x7fffffff) [L22] EXPR sf_u.value [L22] (x) = sf_u.value [L24] return x; VAL [\old(x)=0, \result=12, ix=9, x=12] [L46] RET, EXPR fabs_float(x) VAL [fabs_float(x)=12, x=0] [L46] float res = fabs_float(x); [L49] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=12, res == 0.0f && __signbit_float(res) == 0=0, x=0] [L49] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L50] __VERIFIER_error() VAL [res=12, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 32 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 256 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...