/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 10:45:09,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 10:45:09,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 10:45:09,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 10:45:09,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 10:45:09,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 10:45:09,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 10:45:09,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 10:45:09,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 10:45:09,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 10:45:09,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 10:45:09,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 10:45:09,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 10:45:09,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 10:45:09,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 10:45:09,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 10:45:09,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 10:45:09,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 10:45:09,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 10:45:09,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 10:45:09,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 10:45:09,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 10:45:09,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 10:45:09,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 10:45:09,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 10:45:09,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 10:45:09,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 10:45:09,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 10:45:09,603 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 [2020-07-20 10:45:09,640 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 10:45:09,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 10:45:09,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 10:45:09,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 10:45:09,644 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 10:45:09,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 10:45:09,644 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 10:45:09,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 10:45:09,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 10:45:09,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 10:45:09,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 10:45:09,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 10:45:09,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 10:45:09,646 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 10:45:09,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 10:45:09,646 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 10:45:09,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 10:45:09,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 10:45:09,647 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 10:45:09,647 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 10:45:09,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 10:45:09,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 10:45:09,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 10:45:09,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 10:45:09,648 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 10:45:09,649 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 10:45:09,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:09,649 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 10:45:09,649 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 10:45:09,649 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 10:45:09,937 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 10:45:09,949 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 10:45:09,953 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 10:45:09,954 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 10:45:09,955 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 10:45:09,956 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c [2020-07-20 10:45:10,033 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f961a382/c014650769ba4d3295712a9f4c554bd0/FLAGb4f103c1d [2020-07-20 10:45:10,521 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 10:45:10,522 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c [2020-07-20 10:45:10,529 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f961a382/c014650769ba4d3295712a9f4c554bd0/FLAGb4f103c1d [2020-07-20 10:45:10,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f961a382/c014650769ba4d3295712a9f4c554bd0 [2020-07-20 10:45:10,927 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 10:45:10,930 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 10:45:10,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 10:45:10,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 10:45:10,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 10:45:10,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:45:10" (1/1) ... [2020-07-20 10:45:10,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d966692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:10, skipping insertion in model container [2020-07-20 10:45:10,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:45:10" (1/1) ... [2020-07-20 10:45:10,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 10:45:10,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 10:45:11,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:45:11,178 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 10:45:11,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:45:11,315 INFO L208 MainTranslator]: Completed translation [2020-07-20 10:45:11,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:11 WrapperNode [2020-07-20 10:45:11,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 10:45:11,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 10:45:11,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 10:45:11,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 10:45:11,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:11" (1/1) ... [2020-07-20 10:45:11,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:11" (1/1) ... [2020-07-20 10:45:11,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:11" (1/1) ... [2020-07-20 10:45:11,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:11" (1/1) ... [2020-07-20 10:45:11,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:11" (1/1) ... [2020-07-20 10:45:11,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:11" (1/1) ... [2020-07-20 10:45:11,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:11" (1/1) ... [2020-07-20 10:45:11,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 10:45:11,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 10:45:11,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 10:45:11,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 10:45:11,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:11" (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 [2020-07-20 10:45:11,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 10:45:11,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 10:45:11,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-07-20 10:45:11,448 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-07-20 10:45:11,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-07-20 10:45:11,449 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 10:45:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 10:45:11,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-20 10:45:11,451 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-07-20 10:45:11,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 10:45:11,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 10:45:11,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 10:45:11,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 10:45:11,452 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-07-20 10:45:11,452 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-07-20 10:45:11,453 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 10:45:11,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 10:45:11,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 10:45:11,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 10:45:11,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 10:45:11,762 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 10:45:11,762 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-20 10:45:11,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:45:11 BoogieIcfgContainer [2020-07-20 10:45:11,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 10:45:11,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 10:45:11,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 10:45:11,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 10:45:11,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:45:10" (1/3) ... [2020-07-20 10:45:11,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5befe628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:45:11, skipping insertion in model container [2020-07-20 10:45:11,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:11" (2/3) ... [2020-07-20 10:45:11,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5befe628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:45:11, skipping insertion in model container [2020-07-20 10:45:11,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:45:11" (3/3) ... [2020-07-20 10:45:11,775 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a.c [2020-07-20 10:45:11,787 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 10:45:11,796 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 10:45:11,812 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 10:45:11,842 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 10:45:11,842 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 10:45:11,843 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 10:45:11,843 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 10:45:11,843 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 10:45:11,843 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 10:45:11,843 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 10:45:11,844 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 10:45:11,863 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-07-20 10:45:11,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 10:45:11,870 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:45:11,871 INFO L422 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] [2020-07-20 10:45:11,872 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:45:11,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:45:11,886 INFO L82 PathProgramCache]: Analyzing trace with hash -592398611, now seen corresponding path program 1 times [2020-07-20 10:45:11,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:45:11,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958629018] [2020-07-20 10:45:11,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:45:11,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 10:45:11,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:45:12,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:45:12,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:45:12,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958629018] [2020-07-20 10:45:12,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:45:12,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 10:45:12,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596721249] [2020-07-20 10:45:12,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 10:45:12,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:45:12,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 10:45:12,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 10:45:12,050 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2020-07-20 10:45:12,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:45:12,081 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2020-07-20 10:45:12,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 10:45:12,083 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2020-07-20 10:45:12,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:45:12,095 INFO L225 Difference]: With dead ends: 79 [2020-07-20 10:45:12,095 INFO L226 Difference]: Without dead ends: 40 [2020-07-20 10:45:12,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 10:45:12,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-20 10:45:12,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-07-20 10:45:12,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-20 10:45:12,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-07-20 10:45:12,150 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2020-07-20 10:45:12,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:45:12,151 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-07-20 10:45:12,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 10:45:12,152 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-07-20 10:45:12,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 10:45:12,154 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:45:12,154 INFO L422 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] [2020-07-20 10:45:12,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:12,369 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:45:12,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:45:12,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1646954013, now seen corresponding path program 1 times [2020-07-20 10:45:12,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:45:12,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159339904] [2020-07-20 10:45:12,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:45:12,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 10:45:12,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:45:12,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:45:12,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:45:12,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159339904] [2020-07-20 10:45:12,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:45:12,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 10:45:12,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695154400] [2020-07-20 10:45:12,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 10:45:12,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:45:12,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 10:45:12,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 10:45:12,502 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2020-07-20 10:45:12,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:45:12,529 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-07-20 10:45:12,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 10:45:12,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-07-20 10:45:12,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:45:12,533 INFO L225 Difference]: With dead ends: 59 [2020-07-20 10:45:12,533 INFO L226 Difference]: Without dead ends: 44 [2020-07-20 10:45:12,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 10:45:12,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-20 10:45:12,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-07-20 10:45:12,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-20 10:45:12,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-07-20 10:45:12,545 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2020-07-20 10:45:12,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:45:12,545 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-07-20 10:45:12,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 10:45:12,546 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-07-20 10:45:12,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 10:45:12,550 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:45:12,550 INFO L422 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] [2020-07-20 10:45:12,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:12,766 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:45:12,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:45:12,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1003466516, now seen corresponding path program 1 times [2020-07-20 10:45:12,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:45:12,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543502787] [2020-07-20 10:45:12,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:45:12,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 10:45:12,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:45:12,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:45:12,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:45:12,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543502787] [2020-07-20 10:45:12,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:45:12,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 10:45:12,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27447398] [2020-07-20 10:45:12,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 10:45:12,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:45:12,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 10:45:12,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 10:45:12,860 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2020-07-20 10:45:12,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:45:12,885 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-07-20 10:45:12,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 10:45:12,886 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-07-20 10:45:12,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:45:12,888 INFO L225 Difference]: With dead ends: 63 [2020-07-20 10:45:12,888 INFO L226 Difference]: Without dead ends: 48 [2020-07-20 10:45:12,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 10:45:12,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-20 10:45:12,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-07-20 10:45:12,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-20 10:45:12,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-07-20 10:45:12,898 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2020-07-20 10:45:12,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:45:12,898 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-07-20 10:45:12,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 10:45:12,899 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-07-20 10:45:12,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 10:45:12,900 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:45:12,900 INFO L422 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] [2020-07-20 10:45:13,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:13,115 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:45:13,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:45:13,116 INFO L82 PathProgramCache]: Analyzing trace with hash -793484843, now seen corresponding path program 1 times [2020-07-20 10:45:13,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:45:13,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126905040] [2020-07-20 10:45:13,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:45:13,211 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:45:13,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:45:13,235 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:45:13,280 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 10:45:13,281 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 10:45:13,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:13,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:45:13 BoogieIcfgContainer [2020-07-20 10:45:13,518 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 10:45:13,521 INFO L168 Benchmark]: Toolchain (without parser) took 2591.97 ms. Allocated memory was 139.5 MB in the beginning and 235.4 MB in the end (delta: 95.9 MB). Free memory was 102.6 MB in the beginning and 197.3 MB in the end (delta: -94.7 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:13,522 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory is still 121.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 10:45:13,523 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.54 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 102.2 MB in the beginning and 182.0 MB in the end (delta: -79.8 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:13,524 INFO L168 Benchmark]: Boogie Preprocessor took 52.76 ms. Allocated memory is still 203.4 MB. Free memory was 182.0 MB in the beginning and 179.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:13,524 INFO L168 Benchmark]: RCFGBuilder took 395.68 ms. Allocated memory is still 203.4 MB. Free memory was 179.6 MB in the beginning and 159.0 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:13,525 INFO L168 Benchmark]: TraceAbstraction took 1751.67 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 159.0 MB in the beginning and 197.3 MB in the end (delta: -38.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 10:45:13,529 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory is still 121.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 385.54 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 102.2 MB in the beginning and 182.0 MB in the end (delta: -79.8 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 52.76 ms. Allocated memory is still 203.4 MB. Free memory was 182.0 MB in the beginning and 179.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 395.68 ms. Allocated memory is still 203.4 MB. Free memory was 179.6 MB in the beginning and 159.0 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1751.67 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 159.0 MB in the beginning and 197.3 MB in the end (delta: -38.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 85]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 84, overapproximation of someUnaryDOUBLEoperation at line 79. Possible FailurePath: [L79] double x = -0.0; [L80] double y = 0.0; VAL [y=0] [L81] CALL, EXPR fmax_double(x, y) VAL [\old(x)=4, \old(y)=0] [L52] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4] [L24] __uint32_t msw, lsw; VAL [\old(x)=4, x=4] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4, lsw=21238, msw=-2148532223, x=4] [L36-L37] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4, lsw=21238, msw=-2148532223, x=4] [L39-L40] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4, lsw=21238, msw=-2148532223, x=4] [L43-L44] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L47] return 0; VAL [\old(x)=4, \result=0, lsw=21238, msw=-2148532223, x=4] [L52] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4, \old(y)=0, __fpclassify_double(x)=0, x=4, y=0] [L52] COND TRUE __fpclassify_double(x) == 0 [L53] return y; VAL [\old(x)=4, \old(y)=0, \result=0, x=4, y=0] [L81] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=0, x=4, y=0] [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=0, res == 0.0 && __signbit_double(res) == 0=0, x=4, y=0] [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() VAL [res=0, x=4, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 144 SDtfs, 0 SDslu, 172 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1926 SizeOfPredicates, 0 NumberOfNonLiveVariables, 277 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...