/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_1231b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 10:45:08,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 10:45:08,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 10:45:08,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 10:45:08,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 10:45:08,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 10:45:08,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 10:45:08,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 10:45:08,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 10:45:08,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 10:45:08,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 10:45:08,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 10:45:08,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 10:45:08,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 10:45:08,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 10:45:08,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 10:45:08,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 10:45:08,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 10:45:08,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 10:45:08,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 10:45:08,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 10:45:08,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 10:45:08,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 10:45:08,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 10:45:08,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 10:45:08,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 10:45:08,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 10:45:08,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 10:45:08,294 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 10:45:08,315 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 10:45:08,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 10:45:08,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 10:45:08,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 10:45:08,317 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 10:45:08,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 10:45:08,317 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 10:45:08,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 10:45:08,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 10:45:08,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 10:45:08,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 10:45:08,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 10:45:08,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 10:45:08,318 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 10:45:08,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 10:45:08,319 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 10:45:08,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 10:45:08,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 10:45:08,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 10:45:08,320 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 10:45:08,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 10:45:08,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 10:45:08,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 10:45:08,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 10:45:08,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 10:45:08,321 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 10:45:08,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:08,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 10:45:08,322 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 10:45:08,322 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 10:45:08,593 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 10:45:08,606 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 10:45:08,609 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 10:45:08,611 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 10:45:08,611 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 10:45:08,612 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c [2020-07-20 10:45:08,681 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/751261072/4ba5187187664761a8288c8e13eeceff/FLAG3a1c0e57c [2020-07-20 10:45:09,172 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 10:45:09,173 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c [2020-07-20 10:45:09,178 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/751261072/4ba5187187664761a8288c8e13eeceff/FLAG3a1c0e57c [2020-07-20 10:45:09,585 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/751261072/4ba5187187664761a8288c8e13eeceff [2020-07-20 10:45:09,593 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 10:45:09,595 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 10:45:09,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 10:45:09,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 10:45:09,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 10:45:09,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:45:09" (1/1) ... [2020-07-20 10:45:09,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70ebe572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:09, skipping insertion in model container [2020-07-20 10:45:09,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:45:09" (1/1) ... [2020-07-20 10:45:09,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 10:45:09,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 10:45:09,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:45:09,841 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 10:45:09,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:45:10,030 INFO L208 MainTranslator]: Completed translation [2020-07-20 10:45:10,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:10 WrapperNode [2020-07-20 10:45:10,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 10:45:10,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 10:45:10,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 10:45:10,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 10:45:10,048 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 10:45:10,050 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 10:45:10,080 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 10:45:10,080 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 10:45:10,098 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 10:45:10,110 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 10:45:10,112 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 10:45:10,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 10:45:10,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 10:45:10,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 10:45:10,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 10:45:10,121 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 10:45:10,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 10:45:10,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 10:45:10,203 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-20 10:45:10,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-07-20 10:45:10,203 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2020-07-20 10:45:10,203 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 10:45:10,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 10:45:10,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-20 10:45:10,204 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-20 10:45:10,204 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-07-20 10:45:10,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 10:45:10,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 10:45:10,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 10:45:10,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 10:45:10,206 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2020-07-20 10:45:10,207 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 10:45:10,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 10:45:10,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 10:45:10,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 10:45:10,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 10:45:10,543 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 10:45:10,543 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-20 10:45:10,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:45:10 BoogieIcfgContainer [2020-07-20 10:45:10,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 10:45:10,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 10:45:10,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 10:45:10,553 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 10:45:10,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:45:09" (1/3) ... [2020-07-20 10:45:10,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb86f7b 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 10:45:10,554 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 10:45:10,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb86f7b 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 10:45:10,555 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 10:45:10,557 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b.c [2020-07-20 10:45:10,568 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 10:45:10,577 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 10:45:10,592 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 10:45:10,618 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 10:45:10,618 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 10:45:10,618 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 10:45:10,618 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 10:45:10,618 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 10:45:10,619 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 10:45:10,619 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 10:45:10,619 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 10:45:10,638 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-07-20 10:45:10,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 10:45:10,655 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:45:10,659 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 10:45:10,660 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:45:10,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:45:10,672 INFO L82 PathProgramCache]: Analyzing trace with hash 969227935, now seen corresponding path program 1 times [2020-07-20 10:45:10,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:45:10,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74477250] [2020-07-20 10:45:10,692 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 10:45:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:45:10,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 10:45:10,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:45:10,833 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 10:45:10,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:45:10,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74477250] [2020-07-20 10:45:10,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:45:10,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 10:45:10,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143763037] [2020-07-20 10:45:10,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 10:45:10,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:45:10,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 10:45:10,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 10:45:10,858 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2020-07-20 10:45:10,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:45:10,886 INFO L93 Difference]: Finished difference Result 69 states and 91 transitions. [2020-07-20 10:45:10,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 10:45:10,887 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2020-07-20 10:45:10,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:45:10,897 INFO L225 Difference]: With dead ends: 69 [2020-07-20 10:45:10,898 INFO L226 Difference]: Without dead ends: 37 [2020-07-20 10:45:10,901 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 10:45:10,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-20 10:45:10,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-07-20 10:45:10,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-20 10:45:10,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2020-07-20 10:45:10,948 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 27 [2020-07-20 10:45:10,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:45:10,949 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2020-07-20 10:45:10,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 10:45:10,949 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2020-07-20 10:45:10,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 10:45:10,951 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:45:10,952 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 10:45:11,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:11,168 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:45:11,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:45:11,169 INFO L82 PathProgramCache]: Analyzing trace with hash 627032795, now seen corresponding path program 1 times [2020-07-20 10:45:11,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:45:11,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728324946] [2020-07-20 10:45:11,171 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 10:45:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:45:11,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 10:45:11,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:45:11,315 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 10:45:11,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:45:11,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728324946] [2020-07-20 10:45:11,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:45:11,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 10:45:11,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959632911] [2020-07-20 10:45:11,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 10:45:11,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:45:11,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 10:45:11,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 10:45:11,320 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 4 states. [2020-07-20 10:45:11,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:45:11,366 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2020-07-20 10:45:11,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 10:45:11,367 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-07-20 10:45:11,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:45:11,371 INFO L225 Difference]: With dead ends: 47 [2020-07-20 10:45:11,371 INFO L226 Difference]: Without dead ends: 41 [2020-07-20 10:45:11,372 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 10:45:11,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-20 10:45:11,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-20 10:45:11,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-20 10:45:11,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-07-20 10:45:11,383 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2020-07-20 10:45:11,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:45:11,384 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-07-20 10:45:11,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 10:45:11,384 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-07-20 10:45:11,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-20 10:45:11,385 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:45:11,385 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 10:45:11,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:11,601 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:45:11,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:45:11,602 INFO L82 PathProgramCache]: Analyzing trace with hash 151786008, now seen corresponding path program 1 times [2020-07-20 10:45:11,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:45:11,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655611077] [2020-07-20 10:45:11,604 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 10:45:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:45:11,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 10:45:11,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:45:11,696 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 10:45:11,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:45:11,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655611077] [2020-07-20 10:45:11,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:45:11,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 10:45:11,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230389980] [2020-07-20 10:45:11,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 10:45:11,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:45:11,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 10:45:11,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 10:45:11,705 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 4 states. [2020-07-20 10:45:11,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:45:11,749 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2020-07-20 10:45:11,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 10:45:11,751 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-07-20 10:45:11,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:45:11,753 INFO L225 Difference]: With dead ends: 51 [2020-07-20 10:45:11,753 INFO L226 Difference]: Without dead ends: 45 [2020-07-20 10:45:11,754 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 10:45:11,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-07-20 10:45:11,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-07-20 10:45:11,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-20 10:45:11,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-07-20 10:45:11,762 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 31 [2020-07-20 10:45:11,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:45:11,763 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-07-20 10:45:11,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 10:45:11,763 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-07-20 10:45:11,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-20 10:45:11,765 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:45:11,765 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 10:45:11,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:11,981 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:45:11,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:45:11,983 INFO L82 PathProgramCache]: Analyzing trace with hash -44727497, now seen corresponding path program 1 times [2020-07-20 10:45:11,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:45:11,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575691017] [2020-07-20 10:45:11,984 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 10:45:12,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:45:12,056 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:45:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:45:12,078 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:45:12,104 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 10:45:12,104 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 10:45:12,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:12,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:45:12 BoogieIcfgContainer [2020-07-20 10:45:12,348 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 10:45:12,350 INFO L168 Benchmark]: Toolchain (without parser) took 2755.41 ms. Allocated memory was 140.0 MB in the beginning and 231.7 MB in the end (delta: 91.8 MB). Free memory was 104.6 MB in the beginning and 192.9 MB in the end (delta: -88.2 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:12,351 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 10:45:12,352 INFO L168 Benchmark]: CACSL2BoogieTranslator took 434.82 ms. Allocated memory was 140.0 MB in the beginning and 207.1 MB in the end (delta: 67.1 MB). Free memory was 104.2 MB in the beginning and 186.1 MB in the end (delta: -81.9 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:12,353 INFO L168 Benchmark]: Boogie Preprocessor took 85.42 ms. Allocated memory is still 207.1 MB. Free memory was 186.1 MB in the beginning and 183.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:12,354 INFO L168 Benchmark]: RCFGBuilder took 428.69 ms. Allocated memory is still 207.1 MB. Free memory was 183.8 MB in the beginning and 164.7 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:12,355 INFO L168 Benchmark]: TraceAbstraction took 1798.81 ms. Allocated memory was 207.1 MB in the beginning and 231.7 MB in the end (delta: 24.6 MB). Free memory was 164.1 MB in the beginning and 192.9 MB in the end (delta: -28.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 10:45:12,359 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 434.82 ms. Allocated memory was 140.0 MB in the beginning and 207.1 MB in the end (delta: 67.1 MB). Free memory was 104.2 MB in the beginning and 186.1 MB in the end (delta: -81.9 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.42 ms. Allocated memory is still 207.1 MB. Free memory was 186.1 MB in the beginning and 183.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 428.69 ms. Allocated memory is still 207.1 MB. Free memory was 183.8 MB in the beginning and 164.7 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1798.81 ms. Allocated memory was 207.1 MB in the beginning and 231.7 MB in the end (delta: 24.6 MB). Free memory was 164.1 MB in the beginning and 192.9 MB in the end (delta: -28.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 68]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 67, overapproximation of someBinaryArithmeticDOUBLEoperation at line 61. Possible FailurePath: [L60] double x = __VERIFIER_nondet_double(); [L61] double y = 0.0 / 0.0; VAL [x=3] [L62] CALL, EXPR isnan_double(x) VAL [\old(x)=3] [L16] return x != x; VAL [\old(x)=3, \result=0, x=3] [L62] RET, EXPR isnan_double(x) VAL [isnan_double(x)=0, x=3] [L62] COND TRUE !isnan_double(x) [L64] CALL, EXPR fmin_double(x, y) VAL [\old(x)=3, \old(y)=4] [L45] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=3] [L18] __uint32_t msw, lsw; VAL [\old(x)=3, x=3] [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L27-L28] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=3, lsw=21238, msw=-2148532223, x=3] [L30-L31] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=3, lsw=21238, msw=-2148532223, x=3] [L33-L34] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=3, lsw=21238, msw=-2148532223, x=3] [L37-L38] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L41] return 0; VAL [\old(x)=3, \result=0, lsw=21238, msw=-2148532223, x=3] [L45] RET, EXPR __fpclassify_double(x) VAL [\old(x)=3, \old(y)=4, __fpclassify_double(x)=0, x=3, y=4] [L45] COND TRUE __fpclassify_double(x) == 0 [L46] return y; VAL [\old(x)=3, \old(y)=4, \result=4, x=3, y=4] [L64] RET, EXPR fmin_double(x, y) VAL [fmin_double(x, y)=4, x=3, y=4] [L64] double res = fmin_double(x, y); [L67] COND TRUE res != x VAL [res=4, x=3, y=4] [L68] __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: 1.7s, 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...