/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_1250.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 10:45:08,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 10:45:08,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 10:45:08,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 10:45:08,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 10:45:08,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 10:45:08,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 10:45:08,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 10:45:08,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 10:45:08,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 10:45:08,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 10:45:08,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 10:45:08,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 10:45:08,812 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 10:45:08,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 10:45:08,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 10:45:08,817 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 10:45:08,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 10:45:08,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 10:45:08,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 10:45:08,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 10:45:08,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 10:45:08,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 10:45:08,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 10:45:08,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 10:45:08,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 10:45:08,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 10:45:08,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 10:45:08,855 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 10:45:08,891 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 10:45:08,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 10:45:08,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 10:45:08,896 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 10:45:08,896 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 10:45:08,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 10:45:08,897 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 10:45:08,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 10:45:08,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 10:45:08,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 10:45:08,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 10:45:08,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 10:45:08,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 10:45:08,901 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 10:45:08,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 10:45:08,901 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 10:45:08,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 10:45:08,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 10:45:08,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 10:45:08,903 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 10:45:08,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 10:45:08,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 10:45:08,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 10:45:08,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 10:45:08,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 10:45:08,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 10:45:08,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:08,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 10:45:08,904 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 10:45:08,904 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 10:45:09,171 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 10:45:09,184 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 10:45:09,187 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 10:45:09,188 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 10:45:09,189 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 10:45:09,189 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250.c [2020-07-20 10:45:09,263 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74d4b0b02/e0cfa6beea6648b6890fd963b6703c4c/FLAGcfcc33368 [2020-07-20 10:45:09,741 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 10:45:09,742 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1250.c [2020-07-20 10:45:09,750 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74d4b0b02/e0cfa6beea6648b6890fd963b6703c4c/FLAGcfcc33368 [2020-07-20 10:45:10,087 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74d4b0b02/e0cfa6beea6648b6890fd963b6703c4c [2020-07-20 10:45:10,096 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 10:45:10,099 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 10:45:10,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 10:45:10,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 10:45:10,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 10:45:10,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:45:10" (1/1) ... [2020-07-20 10:45:10,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@158c267f 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 10:45:10,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:45:10" (1/1) ... [2020-07-20 10:45:10,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 10:45:10,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 10:45:10,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:45:10,331 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 10:45:10,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:45:10,385 INFO L208 MainTranslator]: Completed translation [2020-07-20 10:45:10,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:10 WrapperNode [2020-07-20 10:45:10,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 10:45:10,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 10:45:10,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 10:45:10,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 10:45:10,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:10" (1/1) ... [2020-07-20 10:45:10,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:10" (1/1) ... [2020-07-20 10:45:10,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:10" (1/1) ... [2020-07-20 10:45:10,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:10" (1/1) ... [2020-07-20 10:45:10,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:10" (1/1) ... [2020-07-20 10:45:10,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:10" (1/1) ... [2020-07-20 10:45:10,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:10" (1/1) ... [2020-07-20 10:45:10,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 10:45:10,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 10:45:10,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 10:45:10,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 10:45:10,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:10" (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 10:45:10,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 10:45:10,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 10:45:10,600 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-20 10:45:10,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-07-20 10:45:10,601 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-07-20 10:45:10,601 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 10:45:10,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 10:45:10,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-20 10:45:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-20 10:45:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-07-20 10:45:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 10:45:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 10:45:10,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 10:45:10,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 10:45:10,603 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-07-20 10:45:10,604 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 10:45:10,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 10:45:10,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 10:45:10,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 10:45:10,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 10:45:10,900 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 10:45:10,901 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-20 10:45:10,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:45:10 BoogieIcfgContainer [2020-07-20 10:45:10,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 10:45:10,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 10:45:10,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 10:45:10,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 10:45:10,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:45:10" (1/3) ... [2020-07-20 10:45:10,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7886a0d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:45:10, skipping insertion in model container [2020-07-20 10:45:10,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:10" (2/3) ... [2020-07-20 10:45:10,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7886a0d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:45:10, skipping insertion in model container [2020-07-20 10:45:10,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:45:10" (3/3) ... [2020-07-20 10:45:10,916 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2020-07-20 10:45:10,929 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 10:45:10,937 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 10:45:10,955 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 10:45:10,982 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 10:45:10,982 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 10:45:10,982 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 10:45:10,982 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 10:45:10,983 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 10:45:10,983 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 10:45:10,983 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 10:45:10,983 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 10:45:11,002 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-07-20 10:45:11,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 10:45:11,009 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:45:11,011 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 10:45:11,011 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:45:11,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:45:11,017 INFO L82 PathProgramCache]: Analyzing trace with hash 397720622, now seen corresponding path program 1 times [2020-07-20 10:45:11,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:45:11,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459106870] [2020-07-20 10:45:11,027 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 10:45:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:45:11,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 10:45:11,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:45:11,172 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 10:45:11,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:45:11,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459106870] [2020-07-20 10:45:11,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:45:11,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 10:45:11,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499061389] [2020-07-20 10:45:11,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 10:45:11,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:45:11,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 10:45:11,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 10:45:11,203 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2020-07-20 10:45:11,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:45:11,232 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2020-07-20 10:45:11,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 10:45:11,234 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2020-07-20 10:45:11,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:45:11,244 INFO L225 Difference]: With dead ends: 71 [2020-07-20 10:45:11,244 INFO L226 Difference]: Without dead ends: 36 [2020-07-20 10:45:11,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 25 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 10:45:11,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-07-20 10:45:11,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-07-20 10:45:11,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-20 10:45:11,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-07-20 10:45:11,298 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2020-07-20 10:45:11,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:45:11,298 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-07-20 10:45:11,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 10:45:11,299 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-07-20 10:45:11,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 10:45:11,301 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:45:11,302 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, 1] [2020-07-20 10:45:11,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:11,518 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:45:11,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:45:11,519 INFO L82 PathProgramCache]: Analyzing trace with hash -54823803, now seen corresponding path program 1 times [2020-07-20 10:45:11,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:45:11,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066206638] [2020-07-20 10:45:11,521 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 10:45:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:45:11,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 10:45:11,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:45:11,662 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 10:45:11,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:45:11,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066206638] [2020-07-20 10:45:11,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:45:11,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 10:45:11,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971616536] [2020-07-20 10:45:11,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 10:45:11,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:45:11,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 10:45:11,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 10:45:11,666 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2020-07-20 10:45:11,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:45:11,697 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-07-20 10:45:11,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 10:45:11,698 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-07-20 10:45:11,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:45:11,701 INFO L225 Difference]: With dead ends: 51 [2020-07-20 10:45:11,701 INFO L226 Difference]: Without dead ends: 40 [2020-07-20 10:45:11,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 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 10:45:11,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-20 10:45:11,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-07-20 10:45:11,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-20 10:45:11,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-07-20 10:45:11,713 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2020-07-20 10:45:11,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:45:11,714 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-07-20 10:45:11,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 10:45:11,714 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-07-20 10:45:11,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 10:45:11,716 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:45:11,716 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, 1, 1, 1, 1] [2020-07-20 10:45:11,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:11,930 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:45:11,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:45:11,931 INFO L82 PathProgramCache]: Analyzing trace with hash -268248811, now seen corresponding path program 1 times [2020-07-20 10:45:11,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:45:11,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961576562] [2020-07-20 10:45:11,932 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 10:45:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:45:11,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 10:45:11,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:45:12,023 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 10:45:12,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:45:12,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961576562] [2020-07-20 10:45:12,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:45:12,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 10:45:12,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723982891] [2020-07-20 10:45:12,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 10:45:12,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:45:12,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 10:45:12,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 10:45:12,029 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2020-07-20 10:45:12,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:45:12,068 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-07-20 10:45:12,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 10:45:12,069 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-07-20 10:45:12,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:45:12,071 INFO L225 Difference]: With dead ends: 55 [2020-07-20 10:45:12,072 INFO L226 Difference]: Without dead ends: 44 [2020-07-20 10:45:12,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 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 10:45:12,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-20 10:45:12,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-07-20 10:45:12,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-20 10:45:12,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-07-20 10:45:12,088 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2020-07-20 10:45:12,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:45:12,090 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-07-20 10:45:12,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 10:45:12,090 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-07-20 10:45:12,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 10:45:12,093 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:45:12,093 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, 1, 1, 1, 1] [2020-07-20 10:45:12,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:12,307 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:45:12,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:45:12,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1239302998, now seen corresponding path program 1 times [2020-07-20 10:45:12,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:45:12,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103752384] [2020-07-20 10:45:12,310 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 10:45:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:45:12,365 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:45:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:45:12,395 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:45:12,419 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 10:45:12,419 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 10:45:12,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:12,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:45:12 BoogieIcfgContainer [2020-07-20 10:45:12,665 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 10:45:12,668 INFO L168 Benchmark]: Toolchain (without parser) took 2569.39 ms. Allocated memory was 145.2 MB in the beginning and 234.9 MB in the end (delta: 89.7 MB). Free memory was 101.7 MB in the beginning and 199.6 MB in the end (delta: -97.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 10:45:12,669 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 145.2 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 10:45:12,670 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.65 ms. Allocated memory is still 145.2 MB. Free memory was 101.3 MB in the beginning and 90.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:12,671 INFO L168 Benchmark]: Boogie Preprocessor took 140.65 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 90.4 MB in the beginning and 181.0 MB in the end (delta: -90.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:12,672 INFO L168 Benchmark]: RCFGBuilder took 379.29 ms. Allocated memory is still 203.4 MB. Free memory was 181.0 MB in the beginning and 161.7 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:12,673 INFO L168 Benchmark]: TraceAbstraction took 1757.16 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 161.7 MB in the beginning and 199.6 MB in the end (delta: -38.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 10:45:12,677 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 145.2 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 285.65 ms. Allocated memory is still 145.2 MB. Free memory was 101.3 MB in the beginning and 90.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 140.65 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 90.4 MB in the beginning and 181.0 MB in the end (delta: -90.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 379.29 ms. Allocated memory is still 203.4 MB. Free memory was 181.0 MB in the beginning and 161.7 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1757.16 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 161.7 MB in the beginning and 199.6 MB in the end (delta: -38.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 72]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 67. Possible FailurePath: [L67] double x = 0.0 / 0.0; [L68] double y = 0.0 / 0.0; [L69] CALL, EXPR fmax_double(x, y) VAL [\old(x)=3, \old(y)=4] [L55] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=3] [L27] __uint32_t msw, lsw; VAL [\old(x)=3, x=3] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (msw) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lsw) = ew_u.parts.lsw [L36-L37] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=3, lsw=7719, msw=6441402369, x=3] [L39-L40] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=3, lsw=7719, msw=6441402369, x=3] [L42-L43] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=3, lsw=7719, msw=6441402369, x=3] [L46-L47] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L50] return 0; VAL [\old(x)=3, \result=0, lsw=7719, msw=6441402369, x=3] [L55] RET, EXPR __fpclassify_double(x) VAL [\old(x)=3, \old(y)=4, __fpclassify_double(x)=0, x=3, y=4] [L55] COND TRUE __fpclassify_double(x) == 0 [L56] return y; VAL [\old(x)=3, \old(y)=4, \result=4, x=3, y=4] [L69] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=4, x=3, y=4] [L69] double res = fmax_double(x, y); [L71] CALL, EXPR isnan_double(res) VAL [\old(x)=4] [L16] return x != x; VAL [\old(x)=4, \result=0, x=4] [L71] RET, EXPR isnan_double(res) VAL [isnan_double(res)=0, res=4, x=3, y=4] [L71] COND TRUE !isnan_double(res) [L72] __VERIFIER_error() VAL [res=4, x=3, y=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 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: 129 SDtfs, 0 SDslu, 152 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 2582 SizeOfPredicates, 0 NumberOfNonLiveVariables, 313 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...