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_1381.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:23:47,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:23:47,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:23:47,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 01:23:47,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 01:23:47,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 01:23:47,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 01:23:47,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 01:23:47,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 01:23:47,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 01:23:47,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 01:23:47,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 01:23:47,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 01:23:47,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 01:23:47,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 01:23:47,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 01:23:47,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 01:23:47,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 01:23:47,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 01:23:47,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 01:23:47,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 01:23:47,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 01:23:47,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 01:23:47,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 01:23:47,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-08 01:23:47,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-08 01:23:47,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-08 01:23:47,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-08 01:23:47,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-08 01:23:47,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-08 01:23:47,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 01:23:47,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 01:23:47,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 01:23:47,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 01:23:47,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 01:23:47,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 01:23:47,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 01:23:47,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 01:23:47,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:23:47,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:23:47,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:23:47,530 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 01:23:47,544 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:23:47,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:23:47,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:23:47,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:23:47,545 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:23:47,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:23:47,546 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:23:47,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:23:47,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:23:47,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:23:47,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:23:47,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:23:47,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:23:47,547 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:23:47,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:23:47,548 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:23:47,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:23:47,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:23:47,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:23:47,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:23:47,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:23:47,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:23:47,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:23:47,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:23:47,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:23:47,550 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:23:47,550 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:23:47,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:23:47,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:23:47,577 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:23:47,587 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:23:47,591 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:23:47,592 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:23:47,592 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:23:47,593 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1381.c [2019-09-08 01:23:47,651 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e60c1612/4dfaac12f60e406991490fe77403216a/FLAG741cb9bb5 [2019-09-08 01:23:48,052 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:23:48,054 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1381.c [2019-09-08 01:23:48,061 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e60c1612/4dfaac12f60e406991490fe77403216a/FLAG741cb9bb5 [2019-09-08 01:23:48,081 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e60c1612/4dfaac12f60e406991490fe77403216a [2019-09-08 01:23:48,093 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:23:48,094 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:23:48,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:48,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:23:48,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:23:48,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:48" (1/1) ... [2019-09-08 01:23:48,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ed8d3bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:48, skipping insertion in model container [2019-09-08 01:23:48,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:48" (1/1) ... [2019-09-08 01:23:48,117 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:23:48,137 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:23:48,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:48,311 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:23:48,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:48,443 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:23:48,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:48 WrapperNode [2019-09-08 01:23:48,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:48,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:23:48,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:23:48,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:23:48,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:48" (1/1) ... [2019-09-08 01:23:48,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:48" (1/1) ... [2019-09-08 01:23:48,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:48" (1/1) ... [2019-09-08 01:23:48,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:48" (1/1) ... [2019-09-08 01:23:48,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:48" (1/1) ... [2019-09-08 01:23:48,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:48" (1/1) ... [2019-09-08 01:23:48,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:48" (1/1) ... [2019-09-08 01:23:48,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:23:48,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:23:48,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:23:48,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:23:48,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:48" (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 01:23:48,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:23:48,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:23:48,543 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_float [2019-09-08 01:23:48,543 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2019-09-08 01:23:48,543 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:23:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:23:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-09-08 01:23:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_float [2019-09-08 01:23:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 01:23:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-08 01:23:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 01:23:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 01:23:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 01:23:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-08 01:23:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2019-09-08 01:23:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:23:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:23:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:23:48,802 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:23:48,803 INFO L283 CfgBuilder]: Removed 6 assume(true) statements. [2019-09-08 01:23:48,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:48 BoogieIcfgContainer [2019-09-08 01:23:48,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:23:48,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:23:48,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:23:48,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:23:48,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:23:48" (1/3) ... [2019-09-08 01:23:48,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e04d94b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:48, skipping insertion in model container [2019-09-08 01:23:48,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:48" (2/3) ... [2019-09-08 01:23:48,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e04d94b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:48, skipping insertion in model container [2019-09-08 01:23:48,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:48" (3/3) ... [2019-09-08 01:23:48,812 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1381.c [2019-09-08 01:23:48,823 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:23:48,833 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:23:48,867 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:23:48,910 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:23:48,910 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:23:48,910 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:23:48,911 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:23:48,911 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:23:48,911 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:23:48,911 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:23:48,911 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:23:48,911 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:23:48,933 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-09-08 01:23:48,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-09-08 01:23:48,938 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:48,939 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] [2019-09-08 01:23:48,940 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:48,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:48,945 INFO L82 PathProgramCache]: Analyzing trace with hash 247190453, now seen corresponding path program 1 times [2019-09-08 01:23:48,947 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:48,948 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:48,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:48,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:48,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:49,076 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 01:23:49,079 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:23:49,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 01:23:49,083 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 01:23:49,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 01:23:49,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:23:49,100 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2019-09-08 01:23:49,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:23:49,123 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2019-09-08 01:23:49,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 01:23:49,124 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2019-09-08 01:23:49,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:23:49,134 INFO L225 Difference]: With dead ends: 52 [2019-09-08 01:23:49,134 INFO L226 Difference]: Without dead ends: 26 [2019-09-08 01:23:49,138 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 01:23:49,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-09-08 01:23:49,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-09-08 01:23:49,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-09-08 01:23:49,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 25 transitions. [2019-09-08 01:23:49,178 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 25 transitions. Word has length 22 [2019-09-08 01:23:49,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:23:49,178 INFO L475 AbstractCegarLoop]: Abstraction has 26 states and 25 transitions. [2019-09-08 01:23:49,178 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 01:23:49,178 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 25 transitions. [2019-09-08 01:23:49,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-09-08 01:23:49,180 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:49,180 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] [2019-09-08 01:23:49,180 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:49,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:49,181 INFO L82 PathProgramCache]: Analyzing trace with hash 730707327, now seen corresponding path program 1 times [2019-09-08 01:23:49,181 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:49,181 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:49,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:49,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:49,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:23:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:23:49,329 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 01:23:49,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 01:23:49 BoogieIcfgContainer [2019-09-08 01:23:49,355 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 01:23:49,358 INFO L168 Benchmark]: Toolchain (without parser) took 1262.91 ms. Allocated memory was 141.6 MB in the beginning and 203.4 MB in the end (delta: 61.9 MB). Free memory was 87.5 MB in the beginning and 137.0 MB in the end (delta: -49.5 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:49,359 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory is still 106.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-08 01:23:49,361 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.17 ms. Allocated memory was 141.6 MB in the beginning and 203.4 MB in the end (delta: 61.9 MB). Free memory was 87.5 MB in the beginning and 182.5 MB in the end (delta: -95.0 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:49,362 INFO L168 Benchmark]: Boogie Preprocessor took 41.03 ms. Allocated memory is still 203.4 MB. Free memory was 182.5 MB in the beginning and 179.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:49,363 INFO L168 Benchmark]: RCFGBuilder took 319.20 ms. Allocated memory is still 203.4 MB. Free memory was 179.4 MB in the beginning and 163.4 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:49,364 INFO L168 Benchmark]: TraceAbstraction took 549.91 ms. Allocated memory is still 203.4 MB. Free memory was 162.6 MB in the beginning and 137.0 MB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:49,367 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory is still 106.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 344.17 ms. Allocated memory was 141.6 MB in the beginning and 203.4 MB in the end (delta: 61.9 MB). Free memory was 87.5 MB in the beginning and 182.5 MB in the end (delta: -95.0 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.03 ms. Allocated memory is still 203.4 MB. Free memory was 182.5 MB in the beginning and 179.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 319.20 ms. Allocated memory is still 203.4 MB. Free memory was 179.4 MB in the beginning and 163.4 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 549.91 ms. Allocated memory is still 203.4 MB. Free memory was 162.6 MB in the beginning and 137.0 MB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 49]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 33, overapproximation of bitwiseOr at line 26, overapproximation of someBinaryArithmeticFLOAToperation at line 43. Possible FailurePath: [L43] float x = 0.0f / 0.0f; [L44] float y = __VERIFIER_nondet_float(); [L45] CALL, EXPR copysign_float(x, y) VAL [\old(x)=14, \old(y)=13] [L13] __uint32_t ix, iy; VAL [\old(x)=14, \old(y)=13, x=14, y=13] [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 gf_u; [L21] gf_u.value = (y) [L22] EXPR gf_u.word [L22] (iy) = gf_u.word [L25] ieee_float_shape_type sf_u; [L26] sf_u.word = ((ix & 0x7fffffff) | (iy & 0x80000000)) [L27] EXPR sf_u.value [L27] (x) = sf_u.value [L29] return x; VAL [\old(x)=14, \old(y)=13, \result=9, ix=15, iy=17, x=9, y=13] [L45] RET, EXPR copysign_float(x, y) VAL [copysign_float(x, y)=9, x=14, y=13] [L45] float res = copysign_float(x, y); [L48] CALL, EXPR isnan_float(res) VAL [\old(x)=9] [L33] return x != x; VAL [\old(x)=9, \result=0, x=9] [L48] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, res=9, x=14, y=13] [L48] COND TRUE !isnan_float(res) [L49] __VERIFIER_error() VAL [res=9, x=14, y=13] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 29 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=30occurred 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, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 441 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...