/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/float_req_bl_1250.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 10:40:14,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 10:40:14,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 10:40:14,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 10:40:14,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 10:40:14,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 10:40:14,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 10:40:14,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 10:40:14,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 10:40:14,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 10:40:14,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 10:40:14,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 10:40:14,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 10:40:14,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 10:40:14,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 10:40:14,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 10:40:14,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 10:40:14,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 10:40:14,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 10:40:14,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 10:40:14,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 10:40:14,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 10:40:14,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 10:40:14,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 10:40:14,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 10:40:14,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 10:40:14,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 10:40:14,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 10:40:14,776 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 [2020-07-21 10:40:14,798 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 10:40:14,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 10:40:14,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 10:40:14,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 10:40:14,800 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 10:40:14,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 10:40:14,801 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 10:40:14,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 10:40:14,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 10:40:14,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 10:40:14,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 10:40:14,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 10:40:14,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 10:40:14,804 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 10:40:14,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 10:40:14,804 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 10:40:14,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 10:40:14,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 10:40:14,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 10:40:14,805 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 10:40:14,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 10:40:14,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 10:40:14,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 10:40:14,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 10:40:14,806 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 10:40:14,806 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 10:40:14,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:40:14,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 10:40:14,807 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 10:40:14,807 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 [2020-07-21 10:40:15,088 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 10:40:15,101 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 10:40:15,105 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 10:40:15,106 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 10:40:15,106 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 10:40:15,107 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1250.c [2020-07-21 10:40:15,175 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/574c33b67/82621bed76ba478aa6c2b48201d03a0b/FLAG2986aabcc [2020-07-21 10:40:15,623 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 10:40:15,624 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1250.c [2020-07-21 10:40:15,631 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/574c33b67/82621bed76ba478aa6c2b48201d03a0b/FLAG2986aabcc [2020-07-21 10:40:16,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/574c33b67/82621bed76ba478aa6c2b48201d03a0b [2020-07-21 10:40:16,032 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 10:40:16,034 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 10:40:16,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 10:40:16,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 10:40:16,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 10:40:16,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:40:16" (1/1) ... [2020-07-21 10:40:16,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@708f3ce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:16, skipping insertion in model container [2020-07-21 10:40:16,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:40:16" (1/1) ... [2020-07-21 10:40:16,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 10:40:16,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 10:40:16,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 10:40:16,292 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 10:40:16,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 10:40:16,336 INFO L208 MainTranslator]: Completed translation [2020-07-21 10:40:16,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:16 WrapperNode [2020-07-21 10:40:16,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 10:40:16,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 10:40:16,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 10:40:16,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 10:40:16,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:16" (1/1) ... [2020-07-21 10:40:16,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:16" (1/1) ... [2020-07-21 10:40:16,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:16" (1/1) ... [2020-07-21 10:40:16,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:16" (1/1) ... [2020-07-21 10:40:16,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:16" (1/1) ... [2020-07-21 10:40:16,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:16" (1/1) ... [2020-07-21 10:40:16,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:16" (1/1) ... [2020-07-21 10:40:16,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 10:40:16,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 10:40:16,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 10:40:16,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 10:40:16,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:16" (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 [2020-07-21 10:40:16,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 10:40:16,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 10:40:16,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-07-21 10:40:16,521 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2020-07-21 10:40:16,521 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-07-21 10:40:16,521 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 10:40:16,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 10:40:16,522 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-07-21 10:40:16,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 10:40:16,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 10:40:16,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 10:40:16,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 10:40:16,523 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2020-07-21 10:40:16,523 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-07-21 10:40:16,523 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 10:40:16,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 10:40:16,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 10:40:16,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 10:40:16,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 10:40:16,870 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 10:40:16,870 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-21 10:40:16,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:40:16 BoogieIcfgContainer [2020-07-21 10:40:16,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 10:40:16,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 10:40:16,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 10:40:16,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 10:40:16,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:40:16" (1/3) ... [2020-07-21 10:40:16,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e88b2b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:40:16, skipping insertion in model container [2020-07-21 10:40:16,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:16" (2/3) ... [2020-07-21 10:40:16,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e88b2b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:40:16, skipping insertion in model container [2020-07-21 10:40:16,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:40:16" (3/3) ... [2020-07-21 10:40:16,881 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2020-07-21 10:40:16,890 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 10:40:16,898 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 10:40:16,912 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 10:40:16,932 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 10:40:16,933 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 10:40:16,933 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 10:40:16,933 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 10:40:16,933 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 10:40:16,933 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 10:40:16,933 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 10:40:16,933 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 10:40:16,949 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-07-21 10:40:16,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-21 10:40:16,956 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:40:16,957 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] [2020-07-21 10:40:16,957 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:40:16,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:40:16,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1130060244, now seen corresponding path program 1 times [2020-07-21 10:40:16,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:40:16,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930486853] [2020-07-21 10:40:16,970 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 [2020-07-21 10:40:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:40:17,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 10:40:17,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:40:17,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 10:40:17,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:40:17,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930486853] [2020-07-21 10:40:17,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:40:17,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 10:40:17,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694194762] [2020-07-21 10:40:17,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 10:40:17,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:40:17,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 10:40:17,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 10:40:17,143 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2020-07-21 10:40:17,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:40:17,171 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2020-07-21 10:40:17,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 10:40:17,173 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2020-07-21 10:40:17,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:40:17,183 INFO L225 Difference]: With dead ends: 71 [2020-07-21 10:40:17,184 INFO L226 Difference]: Without dead ends: 36 [2020-07-21 10:40:17,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 10:40:17,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-07-21 10:40:17,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-07-21 10:40:17,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-21 10:40:17,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-07-21 10:40:17,235 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2020-07-21 10:40:17,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:40:17,236 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-07-21 10:40:17,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 10:40:17,236 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-07-21 10:40:17,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-21 10:40:17,239 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:40:17,239 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] [2020-07-21 10:40:17,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:40:17,450 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:40:17,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:40:17,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1283143896, now seen corresponding path program 1 times [2020-07-21 10:40:17,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:40:17,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044920899] [2020-07-21 10:40:17,453 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 [2020-07-21 10:40:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:40:17,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 10:40:17,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:40:17,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 10:40:17,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:40:17,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044920899] [2020-07-21 10:40:17,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:40:17,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 10:40:17,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656227777] [2020-07-21 10:40:17,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 10:40:17,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:40:17,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 10:40:17,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 10:40:17,629 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2020-07-21 10:40:17,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:40:17,677 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-07-21 10:40:17,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 10:40:17,680 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-07-21 10:40:17,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:40:17,684 INFO L225 Difference]: With dead ends: 51 [2020-07-21 10:40:17,684 INFO L226 Difference]: Without dead ends: 40 [2020-07-21 10:40:17,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 10:40:17,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-21 10:40:17,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-07-21 10:40:17,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-21 10:40:17,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-07-21 10:40:17,702 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2020-07-21 10:40:17,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:40:17,702 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-07-21 10:40:17,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 10:40:17,703 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-07-21 10:40:17,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-21 10:40:17,704 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:40:17,704 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, 1, 1, 1, 1] [2020-07-21 10:40:17,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:40:17,911 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:40:17,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:40:17,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1220464557, now seen corresponding path program 1 times [2020-07-21 10:40:17,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:40:17,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573764316] [2020-07-21 10:40:17,914 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 [2020-07-21 10:40:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:40:17,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 10:40:17,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:40:18,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 10:40:18,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:40:18,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573764316] [2020-07-21 10:40:18,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:40:18,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 10:40:18,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165491258] [2020-07-21 10:40:18,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 10:40:18,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:40:18,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 10:40:18,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 10:40:18,017 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2020-07-21 10:40:18,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:40:18,048 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-07-21 10:40:18,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 10:40:18,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-07-21 10:40:18,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:40:18,051 INFO L225 Difference]: With dead ends: 55 [2020-07-21 10:40:18,051 INFO L226 Difference]: Without dead ends: 44 [2020-07-21 10:40:18,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 10:40:18,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-21 10:40:18,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-07-21 10:40:18,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-21 10:40:18,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-07-21 10:40:18,061 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2020-07-21 10:40:18,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:40:18,061 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-07-21 10:40:18,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 10:40:18,062 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-07-21 10:40:18,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-21 10:40:18,063 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:40:18,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:40:18,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:40:18,279 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:40:18,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:40:18,280 INFO L82 PathProgramCache]: Analyzing trace with hash 287087252, now seen corresponding path program 1 times [2020-07-21 10:40:18,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:40:18,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328068550] [2020-07-21 10:40:18,282 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 [2020-07-21 10:40:18,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 10:40:18,332 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 10:40:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 10:40:18,373 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 10:40:18,429 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 10:40:18,429 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 10:40:18,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:40:18,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:40:18 BoogieIcfgContainer [2020-07-21 10:40:18,676 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 10:40:18,679 INFO L168 Benchmark]: Toolchain (without parser) took 2644.32 ms. Allocated memory was 140.0 MB in the beginning and 233.8 MB in the end (delta: 93.8 MB). Free memory was 103.0 MB in the beginning and 198.7 MB in the end (delta: -95.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 10:40:18,680 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-21 10:40:18,681 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.50 ms. Allocated memory is still 140.0 MB. Free memory was 102.6 MB in the beginning and 91.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-07-21 10:40:18,682 INFO L168 Benchmark]: Boogie Preprocessor took 124.51 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 91.9 MB in the beginning and 180.8 MB in the end (delta: -88.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-07-21 10:40:18,682 INFO L168 Benchmark]: RCFGBuilder took 411.69 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 162.8 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-07-21 10:40:18,683 INFO L168 Benchmark]: TraceAbstraction took 1800.55 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 162.2 MB in the beginning and 198.7 MB in the end (delta: -36.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 10:40:18,687 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 140.0 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 302.50 ms. Allocated memory is still 140.0 MB. Free memory was 102.6 MB in the beginning and 91.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.51 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 91.9 MB in the beginning and 180.8 MB in the end (delta: -88.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 411.69 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 162.8 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1800.55 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 162.2 MB in the beginning and 198.7 MB in the end (delta: -36.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 65]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 54, overapproximation of someBinaryArithmeticFLOAToperation at line 60. Possible FailurePath: [L60] float x = 0.0f / 0.0f; [L61] float y = 0.0f / 0.0f; [L62] CALL, EXPR fmax_float(x, y) VAL [\old(x)=0, \old(y)=1] [L43] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0] [L20] __uint32_t w; VAL [\old(x)=0, x=0] [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (w) = gf_u.word [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=0, w=2139095041, x=0] [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=0, w=2139095041, x=0] [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=0, w=2139095041, x=0] [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] return 0; VAL [\old(x)=0, \result=0, w=2139095041, x=0] [L43] RET, EXPR __fpclassify_float(x) VAL [\old(x)=0, \old(y)=1, __fpclassify_float(x)=0, x=0, y=1] [L43] COND TRUE __fpclassify_float(x) == 0 [L44] return y; VAL [\old(x)=0, \old(y)=1, \result=1, x=0, y=1] [L62] RET, EXPR fmax_float(x, y) VAL [fmax_float(x, y)=1, x=0, y=1] [L62] float res = fmax_float(x, y); [L64] CALL, EXPR isnan_float(res) VAL [\old(x)=1] [L54] return x != x; VAL [\old(x)=1, \result=0, x=1] [L64] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, res=1, x=0, y=1] [L64] COND TRUE !isnan_float(res) [L65] __VERIFIER_error() VAL [res=1, x=0, y=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 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: 129 SDtfs, 0 SDslu, 152 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 2582 SizeOfPredicates, 0 NumberOfNonLiveVariables, 307 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...