/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 03:19:33,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 03:19:33,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 03:19:33,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 03:19:33,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 03:19:33,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 03:19:33,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 03:19:33,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 03:19:33,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 03:19:33,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 03:19:33,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 03:19:33,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 03:19:33,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 03:19:33,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 03:19:33,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 03:19:33,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 03:19:33,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 03:19:33,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 03:19:33,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 03:19:33,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 03:19:33,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 03:19:33,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 03:19:33,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 03:19:33,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 03:19:33,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 03:19:33,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 03:19:33,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 03:19:33,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 03:19:33,450 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 03:19:33,464 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 03:19:33,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 03:19:33,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 03:19:33,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 03:19:33,466 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 03:19:33,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 03:19:33,466 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 03:19:33,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 03:19:33,467 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 03:19:33,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 03:19:33,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 03:19:33,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 03:19:33,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 03:19:33,468 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 03:19:33,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 03:19:33,468 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 03:19:33,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 03:19:33,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 03:19:33,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 03:19:33,469 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 03:19:33,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 03:19:33,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 03:19:33,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 03:19:33,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 03:19:33,470 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 03:19:33,470 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 03:19:33,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 03:19:33,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 03:19:33,470 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 03:19:33,471 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 03:19:33,748 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 03:19:33,762 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 03:19:33,765 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 03:19:33,767 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 03:19:33,767 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 03:19:33,768 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c [2020-07-20 03:19:33,835 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad109b96f/dcf2594c8c364170aba76cf3cab453bb/FLAGde05bf153 [2020-07-20 03:19:34,304 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 03:19:34,305 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c [2020-07-20 03:19:34,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad109b96f/dcf2594c8c364170aba76cf3cab453bb/FLAGde05bf153 [2020-07-20 03:19:34,672 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad109b96f/dcf2594c8c364170aba76cf3cab453bb [2020-07-20 03:19:34,682 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 03:19:34,685 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 03:19:34,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 03:19:34,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 03:19:34,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 03:19:34,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:19:34" (1/1) ... [2020-07-20 03:19:34,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3acf8b49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:34, skipping insertion in model container [2020-07-20 03:19:34,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:19:34" (1/1) ... [2020-07-20 03:19:34,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 03:19:34,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 03:19:34,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:19:34,929 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 03:19:34,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:19:35,065 INFO L208 MainTranslator]: Completed translation [2020-07-20 03:19:35,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:35 WrapperNode [2020-07-20 03:19:35,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 03:19:35,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 03:19:35,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 03:19:35,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 03:19:35,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:35" (1/1) ... [2020-07-20 03:19:35,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:35" (1/1) ... [2020-07-20 03:19:35,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:35" (1/1) ... [2020-07-20 03:19:35,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:35" (1/1) ... [2020-07-20 03:19:35,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:35" (1/1) ... [2020-07-20 03:19:35,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:35" (1/1) ... [2020-07-20 03:19:35,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:35" (1/1) ... [2020-07-20 03:19:35,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 03:19:35,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 03:19:35,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 03:19:35,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 03:19:35,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:35" (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 03:19:35,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 03:19:35,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 03:19:35,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-07-20 03:19:35,177 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-07-20 03:19:35,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-07-20 03:19:35,177 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 03:19:35,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 03:19:35,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-20 03:19:35,177 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-07-20 03:19:35,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 03:19:35,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 03:19:35,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 03:19:35,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 03:19:35,178 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-07-20 03:19:35,178 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-07-20 03:19:35,179 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 03:19:35,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 03:19:35,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 03:19:35,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 03:19:35,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 03:19:35,480 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 03:19:35,480 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-20 03:19:35,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:19:35 BoogieIcfgContainer [2020-07-20 03:19:35,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 03:19:35,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 03:19:35,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 03:19:35,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 03:19:35,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 03:19:34" (1/3) ... [2020-07-20 03:19:35,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24558233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:19:35, skipping insertion in model container [2020-07-20 03:19:35,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:35" (2/3) ... [2020-07-20 03:19:35,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24558233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:19:35, skipping insertion in model container [2020-07-20 03:19:35,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:19:35" (3/3) ... [2020-07-20 03:19:35,496 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a.c [2020-07-20 03:19:35,509 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 03:19:35,517 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 03:19:35,535 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 03:19:35,562 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 03:19:35,562 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 03:19:35,562 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 03:19:35,562 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 03:19:35,562 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 03:19:35,563 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 03:19:35,563 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 03:19:35,563 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 03:19:35,585 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-07-20 03:19:35,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 03:19:35,593 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:19:35,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:19:35,594 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:19:35,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:19:35,601 INFO L82 PathProgramCache]: Analyzing trace with hash -592398611, now seen corresponding path program 1 times [2020-07-20 03:19:35,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:19:35,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703652552] [2020-07-20 03:19:35,613 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1668703e [2020-07-20 03:19:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:19:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:19:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:19:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:19:35,859 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 03:19:35,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703652552] [2020-07-20 03:19:35,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:19:35,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 03:19:35,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018124782] [2020-07-20 03:19:35,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 03:19:35,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:19:35,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 03:19:35,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 03:19:35,886 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-07-20 03:19:36,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:19:36,131 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2020-07-20 03:19:36,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 03:19:36,133 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-07-20 03:19:36,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:19:36,144 INFO L225 Difference]: With dead ends: 79 [2020-07-20 03:19:36,144 INFO L226 Difference]: Without dead ends: 40 [2020-07-20 03:19:36,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 03:19:36,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-20 03:19:36,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-07-20 03:19:36,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-20 03:19:36,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-07-20 03:19:36,204 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2020-07-20 03:19:36,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:19:36,204 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-07-20 03:19:36,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 03:19:36,204 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-07-20 03:19:36,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 03:19:36,206 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:19:36,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:19:36,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 03:19:36,207 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:19:36,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:19:36,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1646954013, now seen corresponding path program 1 times [2020-07-20 03:19:36,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:19:36,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038246877] [2020-07-20 03:19:36,209 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1668703e [2020-07-20 03:19:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:19:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:19:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:19:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:19:36,422 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 03:19:36,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038246877] [2020-07-20 03:19:36,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:19:36,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 03:19:36,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769479478] [2020-07-20 03:19:36,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 03:19:36,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:19:36,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 03:19:36,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 03:19:36,426 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-07-20 03:19:36,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:19:36,683 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-07-20 03:19:36,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 03:19:36,683 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-07-20 03:19:36,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:19:36,687 INFO L225 Difference]: With dead ends: 59 [2020-07-20 03:19:36,687 INFO L226 Difference]: Without dead ends: 44 [2020-07-20 03:19:36,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-07-20 03:19:36,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-20 03:19:36,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-07-20 03:19:36,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-20 03:19:36,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-07-20 03:19:36,701 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2020-07-20 03:19:36,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:19:36,702 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-07-20 03:19:36,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 03:19:36,702 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-07-20 03:19:36,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 03:19:36,703 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:19:36,704 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 03:19:36,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 03:19:36,704 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:19:36,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:19:36,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1003466516, now seen corresponding path program 1 times [2020-07-20 03:19:36,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:19:36,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866665326] [2020-07-20 03:19:36,705 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1668703e [2020-07-20 03:19:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:19:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:19:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:19:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:19:36,956 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 03:19:36,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866665326] [2020-07-20 03:19:36,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:19:36,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 03:19:36,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872823731] [2020-07-20 03:19:36,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 03:19:36,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:19:36,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 03:19:36,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 03:19:36,959 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-07-20 03:19:37,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:19:37,185 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-07-20 03:19:37,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 03:19:37,186 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-07-20 03:19:37,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:19:37,188 INFO L225 Difference]: With dead ends: 63 [2020-07-20 03:19:37,188 INFO L226 Difference]: Without dead ends: 48 [2020-07-20 03:19:37,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-07-20 03:19:37,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-20 03:19:37,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-07-20 03:19:37,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-20 03:19:37,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-07-20 03:19:37,199 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2020-07-20 03:19:37,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:19:37,199 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-07-20 03:19:37,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 03:19:37,199 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-07-20 03:19:37,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 03:19:37,201 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:19:37,201 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 03:19:37,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 03:19:37,201 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:19:37,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:19:37,202 INFO L82 PathProgramCache]: Analyzing trace with hash -793484843, now seen corresponding path program 1 times [2020-07-20 03:19:37,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:19:37,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333929466] [2020-07-20 03:19:37,203 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1668703e [2020-07-20 03:19:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:19:37,295 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:19:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:19:37,339 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:19:37,368 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 03:19:37,368 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 03:19:37,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 03:19:37,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 03:19:37 BoogieIcfgContainer [2020-07-20 03:19:37,401 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 03:19:37,404 INFO L168 Benchmark]: Toolchain (without parser) took 2719.13 ms. Allocated memory was 139.5 MB in the beginning and 234.9 MB in the end (delta: 95.4 MB). Free memory was 102.8 MB in the beginning and 125.6 MB in the end (delta: -22.8 MB). Peak memory consumption was 72.6 MB. Max. memory is 7.1 GB. [2020-07-20 03:19:37,405 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 03:19:37,406 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.92 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 102.4 MB in the beginning and 181.6 MB in the end (delta: -79.2 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-07-20 03:19:37,407 INFO L168 Benchmark]: Boogie Preprocessor took 42.56 ms. Allocated memory is still 203.4 MB. Free memory was 181.6 MB in the beginning and 179.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-07-20 03:19:37,408 INFO L168 Benchmark]: RCFGBuilder took 378.01 ms. Allocated memory is still 203.4 MB. Free memory was 179.7 MB in the beginning and 158.8 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-07-20 03:19:37,409 INFO L168 Benchmark]: TraceAbstraction took 1912.80 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 158.8 MB in the beginning and 125.6 MB in the end (delta: 33.2 MB). Peak memory consumption was 64.7 MB. Max. memory is 7.1 GB. [2020-07-20 03:19:37,413 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 379.92 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 102.4 MB in the beginning and 181.6 MB in the end (delta: -79.2 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.56 ms. Allocated memory is still 203.4 MB. Free memory was 181.6 MB in the beginning and 179.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 378.01 ms. Allocated memory is still 203.4 MB. Free memory was 179.7 MB in the beginning and 158.8 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1912.80 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 158.8 MB in the beginning and 125.6 MB in the end (delta: 33.2 MB). Peak memory consumption was 64.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 85]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 84, overapproximation of someUnaryDOUBLEoperation at line 79. Possible FailurePath: [L79] double x = -0.0; [L80] double y = 0.0; VAL [y=0] [L81] CALL, EXPR fmax_double(x, y) VAL [\old(x)=2147483650, \old(y)=0] [L52] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=2147483650] [L24] __uint32_t msw, lsw; VAL [\old(x)=2147483650, x=2147483650] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=2147483650, lsw=1, msw=2147483647, x=2147483650] [L36-L37] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=2147483650, lsw=1, msw=2147483647, x=2147483650] [L39-L40] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=2147483650, lsw=1, msw=2147483647, x=2147483650] [L43-L44] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L47] return 0; VAL [\old(x)=2147483650, \result=0, lsw=1, msw=2147483647, x=2147483650] [L52] RET, EXPR __fpclassify_double(x) VAL [\old(x)=2147483650, \old(y)=0, __fpclassify_double(x)=0, x=2147483650, y=0] [L52] COND TRUE __fpclassify_double(x) == 0 [L53] return y; VAL [\old(x)=2147483650, \old(y)=0, \result=0, x=2147483650, y=0] [L81] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=0, x=2147483650, y=0] [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=0, res == 0.0 && __signbit_double(res) == 0=0, x=2147483650, y=0] [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() VAL [res=0, x=2147483650, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 117 SDslu, 43 SDs, 0 SdLazy, 296 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 4170 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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...