/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_1251b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 10:45:08,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 10:45:08,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 10:45:08,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 10:45:08,866 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 10:45:08,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 10:45:08,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 10:45:08,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 10:45:08,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 10:45:08,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 10:45:08,888 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 10:45:08,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 10:45:08,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 10:45:08,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 10:45:08,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 10:45:08,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 10:45:08,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 10:45:08,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 10:45:08,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 10:45:08,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 10:45:08,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 10:45:08,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 10:45:08,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 10:45:08,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 10:45:08,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 10:45:08,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 10:45:08,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 10:45:08,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 10:45:08,916 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 10:45:08,940 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 10:45:08,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 10:45:08,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 10:45:08,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 10:45:08,942 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 10:45:08,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 10:45:08,943 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 10:45:08,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 10:45:08,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 10:45:08,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 10:45:08,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 10:45:08,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 10:45:08,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 10:45:08,945 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 10:45:08,945 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 10:45:08,946 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 10:45:08,946 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 10:45:08,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 10:45:08,946 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 10:45:08,946 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 10:45:08,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 10:45:08,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 10:45:08,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 10:45:08,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 10:45:08,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 10:45:08,948 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 10:45:08,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:08,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 10:45:08,949 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 10:45:08,949 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 10:45:09,229 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 10:45:09,241 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 10:45:09,244 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 10:45:09,245 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 10:45:09,245 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 10:45:09,246 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c [2020-07-20 10:45:09,308 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/236a04f9b/17bd2a5fbecd4638aedbd2d638a22c82/FLAGaf6b0d61f [2020-07-20 10:45:09,755 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 10:45:09,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c [2020-07-20 10:45:09,763 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/236a04f9b/17bd2a5fbecd4638aedbd2d638a22c82/FLAGaf6b0d61f [2020-07-20 10:45:10,145 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/236a04f9b/17bd2a5fbecd4638aedbd2d638a22c82 [2020-07-20 10:45:10,154 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 10:45:10,157 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 10:45:10,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 10:45:10,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 10:45:10,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 10:45:10,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:45:10" (1/1) ... [2020-07-20 10:45:10,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13cd0b9f 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 10:45:10,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:45:10" (1/1) ... [2020-07-20 10:45:10,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 10:45:10,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 10:45:10,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:45:10,382 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 10:45:10,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:45:10,436 INFO L208 MainTranslator]: Completed translation [2020-07-20 10:45:10,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:10 WrapperNode [2020-07-20 10:45:10,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 10:45:10,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 10:45:10,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 10:45:10,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 10:45:10,534 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 10:45:10,535 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 10:45:10,550 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 10:45:10,551 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 10:45:10,561 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 10:45:10,567 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 10:45:10,568 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 10:45:10,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 10:45:10,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 10:45:10,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 10:45:10,572 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 10:45:10,573 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 10:45:10,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 10:45:10,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 10:45:10,648 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-20 10:45:10,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-07-20 10:45:10,648 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-07-20 10:45:10,648 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 10:45:10,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 10:45:10,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-20 10:45:10,649 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-20 10:45:10,649 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-07-20 10:45:10,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 10:45:10,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 10:45:10,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 10:45:10,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 10:45:10,650 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-07-20 10:45:10,651 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 10:45:10,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 10:45:10,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 10:45:10,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 10:45:10,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 10:45:10,964 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 10:45:10,964 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-20 10:45:10,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:45:10 BoogieIcfgContainer [2020-07-20 10:45:10,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 10:45:10,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 10:45:10,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 10:45:10,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 10:45:10,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:45:10" (1/3) ... [2020-07-20 10:45:10,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b0ee281 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 10:45:10,974 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 10:45:10,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b0ee281 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 10:45:10,974 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 10:45:10,976 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b.c [2020-07-20 10:45:10,986 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 10:45:10,993 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 10:45:11,028 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 10:45:11,048 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 10:45:11,048 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 10:45:11,048 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 10:45:11,049 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 10:45:11,049 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 10:45:11,049 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 10:45:11,049 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 10:45:11,049 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 10:45:11,065 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-07-20 10:45:11,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 10:45:11,071 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:45:11,072 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 10:45:11,072 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:45:11,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:45:11,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1800374877, now seen corresponding path program 1 times [2020-07-20 10:45:11,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:45:11,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223626199] [2020-07-20 10:45:11,084 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 10:45:11,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:45:11,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 10:45:11,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:45:11,217 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 10:45:11,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:45:11,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223626199] [2020-07-20 10:45:11,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:45:11,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 10:45:11,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186756864] [2020-07-20 10:45:11,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 10:45:11,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:45:11,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 10:45:11,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 10:45:11,242 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2020-07-20 10:45:11,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:45:11,271 INFO L93 Difference]: Finished difference Result 69 states and 91 transitions. [2020-07-20 10:45:11,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 10:45:11,273 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2020-07-20 10:45:11,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:45:11,284 INFO L225 Difference]: With dead ends: 69 [2020-07-20 10:45:11,284 INFO L226 Difference]: Without dead ends: 37 [2020-07-20 10:45:11,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 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 10:45:11,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-20 10:45:11,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-07-20 10:45:11,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-20 10:45:11,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2020-07-20 10:45:11,330 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 27 [2020-07-20 10:45:11,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:45:11,330 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2020-07-20 10:45:11,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 10:45:11,331 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2020-07-20 10:45:11,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 10:45:11,333 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:45:11,333 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] [2020-07-20 10:45:11,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:11,549 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:45:11,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:45:11,551 INFO L82 PathProgramCache]: Analyzing trace with hash 283227385, now seen corresponding path program 1 times [2020-07-20 10:45:11,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:45:11,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316436597] [2020-07-20 10:45:11,553 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 10:45:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:45:11,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 10:45:11,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:45:11,664 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 10:45:11,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:45:11,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316436597] [2020-07-20 10:45:11,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:45:11,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 10:45:11,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187860765] [2020-07-20 10:45:11,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 10:45:11,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:45:11,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 10:45:11,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 10:45:11,669 INFO L87 Difference]: Start difference. First operand 37 states and 44 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 47 states and 55 transitions. [2020-07-20 10:45:11,697 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 28 [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: 47 [2020-07-20 10:45:11,701 INFO L226 Difference]: Without dead ends: 41 [2020-07-20 10:45:11,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 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 41 states. [2020-07-20 10:45:11,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-20 10:45:11,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-20 10:45:11,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-07-20 10:45:11,713 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [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 41 states and 49 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 41 states and 49 transitions. [2020-07-20 10:45:11,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-20 10:45:11,715 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, 1] [2020-07-20 10:45:11,929 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 827998108, now seen corresponding path program 1 times [2020-07-20 10:45:11,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:45:11,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279635737] [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 10:45:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:45:11,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 10:45:12,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:45:12,026 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 10:45:12,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:45:12,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279635737] [2020-07-20 10:45:12,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:45:12,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 10:45:12,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007929302] [2020-07-20 10:45:12,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 10:45:12,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:45:12,029 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 10:45:12,030 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 4 states. [2020-07-20 10:45:12,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:45:12,055 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2020-07-20 10:45:12,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 10:45:12,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-07-20 10:45:12,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:45:12,058 INFO L225 Difference]: With dead ends: 51 [2020-07-20 10:45:12,058 INFO L226 Difference]: Without dead ends: 45 [2020-07-20 10:45:12,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 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 10:45:12,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-07-20 10:45:12,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-07-20 10:45:12,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-20 10:45:12,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-07-20 10:45:12,067 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 31 [2020-07-20 10:45:12,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:45:12,068 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-07-20 10:45:12,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 10:45:12,068 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-07-20 10:45:12,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-20 10:45:12,069 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:45:12,069 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, 1] [2020-07-20 10:45:12,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:12,284 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:45:12,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:45:12,285 INFO L82 PathProgramCache]: Analyzing trace with hash 631484603, now seen corresponding path program 1 times [2020-07-20 10:45:12,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:45:12,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488127250] [2020-07-20 10:45:12,287 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 10:45:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:45:12,357 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:45:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:45:12,381 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:45:12,421 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 10:45:12,421 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 10:45:12,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:12,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:45:12 BoogieIcfgContainer [2020-07-20 10:45:12,668 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 10:45:12,671 INFO L168 Benchmark]: Toolchain (without parser) took 2514.03 ms. Allocated memory was 146.3 MB in the beginning and 233.8 MB in the end (delta: 87.6 MB). Free memory was 101.9 MB in the beginning and 195.8 MB in the end (delta: -93.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 10:45:12,672 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 146.3 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 10:45:12,673 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.31 ms. Allocated memory is still 146.3 MB. Free memory was 101.5 MB in the beginning and 90.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:12,675 INFO L168 Benchmark]: Boogie Preprocessor took 133.97 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 90.7 MB in the beginning and 180.8 MB in the end (delta: -90.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:12,676 INFO L168 Benchmark]: RCFGBuilder took 396.45 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 161.1 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:12,677 INFO L168 Benchmark]: TraceAbstraction took 1698.34 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 160.5 MB in the beginning and 195.8 MB in the end (delta: -35.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 10:45:12,681 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 146.3 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 279.31 ms. Allocated memory is still 146.3 MB. Free memory was 101.5 MB in the beginning and 90.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.97 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 90.7 MB in the beginning and 180.8 MB in the end (delta: -90.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 396.45 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 161.1 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1698.34 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 160.5 MB in the beginning and 195.8 MB in the end (delta: -35.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 78]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 77, overapproximation of someBinaryArithmeticDOUBLEoperation at line 65. Possible FailurePath: [L64] double x = __VERIFIER_nondet_double(); [L65] double y = 0.0 / 0.0; VAL [x=3] [L72] CALL, EXPR isnan_double(x) VAL [\old(x)=3] [L16] return x != x; VAL [\old(x)=3, \result=0, x=3] [L72] RET, EXPR isnan_double(x) VAL [isnan_double(x)=0, x=3] [L72] COND TRUE !isnan_double(x) [L74] 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=21238, msw=-2147483649, x=3] [L39-L40] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=3, lsw=21238, msw=-2147483649, x=3] [L42-L43] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=3, lsw=21238, msw=-2147483649, x=3] [L46-L47] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L50] return 0; VAL [\old(x)=3, \result=0, lsw=21238, msw=-2147483649, 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] [L74] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=4, x=3, y=4] [L74] double res = fmax_double(x, y); [L77] COND TRUE res != x VAL [res=4, x=3, y=4] [L78] __VERIFIER_error() VAL [res=4, x=3, y=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 134 SDtfs, 0 SDslu, 156 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 2761 SizeOfPredicates, 0 NumberOfNonLiveVariables, 319 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...