/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 BIGGEST_EQUIVALENCE_CLASS --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/float_req_bl_1250.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 05:28:50,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 05:28:50,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 05:28:50,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 05:28:50,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 05:28:50,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 05:28:50,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 05:28:50,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 05:28:50,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 05:28:50,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 05:28:50,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 05:28:50,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 05:28:50,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 05:28:50,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 05:28:50,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 05:28:50,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 05:28:50,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 05:28:50,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 05:28:50,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 05:28:50,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 05:28:50,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 05:28:50,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 05:28:50,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 05:28:50,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 05:28:50,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 05:28:50,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 05:28:50,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 05:28:50,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 05:28:50,602 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 05:28:50,615 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 05:28:50,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 05:28:50,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 05:28:50,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 05:28:50,617 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 05:28:50,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 05:28:50,618 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 05:28:50,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 05:28:50,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 05:28:50,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 05:28:50,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 05:28:50,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 05:28:50,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 05:28:50,619 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 05:28:50,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 05:28:50,619 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 05:28:50,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 05:28:50,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 05:28:50,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 05:28:50,620 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 05:28:50,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 05:28:50,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 05:28:50,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 05:28:50,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 05:28:50,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 05:28:50,621 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 05:28:50,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 05:28:50,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 05:28:50,622 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 05:28:50,622 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS 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 05:28:50,891 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 05:28:50,907 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 05:28:50,910 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 05:28:50,912 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 05:28:50,914 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 05:28:50,915 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1250.c [2020-07-20 05:28:50,982 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6dbeb149/262d9228a9124e90b95e78866b4bb989/FLAG19dee1ea9 [2020-07-20 05:28:51,425 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 05:28:51,426 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1250.c [2020-07-20 05:28:51,435 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6dbeb149/262d9228a9124e90b95e78866b4bb989/FLAG19dee1ea9 [2020-07-20 05:28:51,793 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6dbeb149/262d9228a9124e90b95e78866b4bb989 [2020-07-20 05:28:51,801 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 05:28:51,804 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 05:28:51,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 05:28:51,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 05:28:51,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 05:28:51,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:28:51" (1/1) ... [2020-07-20 05:28:51,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72c8a2ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:51, skipping insertion in model container [2020-07-20 05:28:51,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:28:51" (1/1) ... [2020-07-20 05:28:51,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 05:28:51,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 05:28:52,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:28:52,088 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 05:28:52,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:28:52,130 INFO L208 MainTranslator]: Completed translation [2020-07-20 05:28:52,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:52 WrapperNode [2020-07-20 05:28:52,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 05:28:52,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 05:28:52,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 05:28:52,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 05:28:52,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:52" (1/1) ... [2020-07-20 05:28:52,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:52" (1/1) ... [2020-07-20 05:28:52,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:52" (1/1) ... [2020-07-20 05:28:52,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:52" (1/1) ... [2020-07-20 05:28:52,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:52" (1/1) ... [2020-07-20 05:28:52,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:52" (1/1) ... [2020-07-20 05:28:52,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:52" (1/1) ... [2020-07-20 05:28:52,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 05:28:52,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 05:28:52,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 05:28:52,253 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 05:28:52,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:52" (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 05:28:52,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 05:28:52,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 05:28:52,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-07-20 05:28:52,315 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2020-07-20 05:28:52,316 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-07-20 05:28:52,316 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 05:28:52,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 05:28:52,316 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-07-20 05:28:52,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 05:28:52,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 05:28:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 05:28:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 05:28:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2020-07-20 05:28:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-07-20 05:28:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 05:28:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 05:28:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 05:28:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 05:28:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 05:28:52,589 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 05:28:52,590 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-20 05:28:52,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:28:52 BoogieIcfgContainer [2020-07-20 05:28:52,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 05:28:52,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 05:28:52,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 05:28:52,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 05:28:52,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:28:51" (1/3) ... [2020-07-20 05:28:52,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34fc1780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:28:52, skipping insertion in model container [2020-07-20 05:28:52,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:52" (2/3) ... [2020-07-20 05:28:52,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34fc1780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:28:52, skipping insertion in model container [2020-07-20 05:28:52,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:28:52" (3/3) ... [2020-07-20 05:28:52,602 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2020-07-20 05:28:52,613 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 05:28:52,621 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 05:28:52,638 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 05:28:52,663 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 05:28:52,663 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 05:28:52,664 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 05:28:52,664 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 05:28:52,664 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 05:28:52,664 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 05:28:52,664 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 05:28:52,664 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 05:28:52,683 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-07-20 05:28:52,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 05:28:52,690 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:28:52,691 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 05:28:52,692 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:28:52,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:28:52,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1130060244, now seen corresponding path program 1 times [2020-07-20 05:28:52,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:28:52,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468236470] [2020-07-20 05:28:52,709 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4eb25e6c [2020-07-20 05:28:52,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:52,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:52,993 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 05:28:52,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468236470] [2020-07-20 05:28:52,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:28:52,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 05:28:52,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577093209] [2020-07-20 05:28:53,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 05:28:53,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:28:53,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 05:28:53,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 05:28:53,017 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2020-07-20 05:28:53,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:28:53,193 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2020-07-20 05:28:53,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 05:28:53,196 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-07-20 05:28:53,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:28:53,206 INFO L225 Difference]: With dead ends: 71 [2020-07-20 05:28:53,206 INFO L226 Difference]: Without dead ends: 36 [2020-07-20 05:28:53,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 05:28:53,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-07-20 05:28:53,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-07-20 05:28:53,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-20 05:28:53,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-07-20 05:28:53,253 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2020-07-20 05:28:53,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:28:53,253 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-07-20 05:28:53,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 05:28:53,254 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-07-20 05:28:53,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 05:28:53,256 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:28:53,256 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 05:28:53,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 05:28:53,257 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:28:53,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:28:53,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1283143896, now seen corresponding path program 1 times [2020-07-20 05:28:53,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:28:53,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164066335] [2020-07-20 05:28:53,258 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4eb25e6c [2020-07-20 05:28:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:53,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:53,470 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 05:28:53,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164066335] [2020-07-20 05:28:53,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:28:53,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 05:28:53,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996948588] [2020-07-20 05:28:53,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 05:28:53,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:28:53,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 05:28:53,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 05:28:53,480 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 6 states. [2020-07-20 05:28:53,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:28:53,742 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-07-20 05:28:53,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 05:28:53,743 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-07-20 05:28:53,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:28:53,746 INFO L225 Difference]: With dead ends: 51 [2020-07-20 05:28:53,747 INFO L226 Difference]: Without dead ends: 40 [2020-07-20 05:28:53,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-07-20 05:28:53,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-20 05:28:53,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-07-20 05:28:53,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-20 05:28:53,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-07-20 05:28:53,760 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2020-07-20 05:28:53,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:28:53,760 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-07-20 05:28:53,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 05:28:53,761 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-07-20 05:28:53,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 05:28:53,762 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:28:53,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:28:53,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 05:28:53,763 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:28:53,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:28:53,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1220464557, now seen corresponding path program 1 times [2020-07-20 05:28:53,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:28:53,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336382289] [2020-07-20 05:28:53,764 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4eb25e6c [2020-07-20 05:28:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:53,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:53,968 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 05:28:53,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336382289] [2020-07-20 05:28:53,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:28:53,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 05:28:53,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598297179] [2020-07-20 05:28:53,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 05:28:53,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:28:53,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 05:28:53,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 05:28:53,971 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-07-20 05:28:54,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:28:54,153 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-07-20 05:28:54,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 05:28:54,154 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-07-20 05:28:54,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:28:54,156 INFO L225 Difference]: With dead ends: 55 [2020-07-20 05:28:54,156 INFO L226 Difference]: Without dead ends: 44 [2020-07-20 05:28:54,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 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 05:28:54,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-20 05:28:54,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-07-20 05:28:54,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-20 05:28:54,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-07-20 05:28:54,166 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2020-07-20 05:28:54,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:28:54,166 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-07-20 05:28:54,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 05:28:54,166 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-07-20 05:28:54,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 05:28:54,168 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:28:54,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:28:54,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 05:28:54,168 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:28:54,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:28:54,169 INFO L82 PathProgramCache]: Analyzing trace with hash 287087252, now seen corresponding path program 1 times [2020-07-20 05:28:54,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:28:54,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433599880] [2020-07-20 05:28:54,169 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4eb25e6c [2020-07-20 05:28:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 05:28:54,240 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 05:28:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 05:28:54,349 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 05:28:54,383 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 05:28:54,383 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 05:28:54,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 05:28:54,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:28:54 BoogieIcfgContainer [2020-07-20 05:28:54,429 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 05:28:54,433 INFO L168 Benchmark]: Toolchain (without parser) took 2628.50 ms. Allocated memory was 140.5 MB in the beginning and 233.3 MB in the end (delta: 92.8 MB). Free memory was 105.3 MB in the beginning and 129.3 MB in the end (delta: -24.0 MB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2020-07-20 05:28:54,435 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 05:28:54,436 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.75 ms. Allocated memory is still 140.5 MB. Free memory was 104.9 MB in the beginning and 94.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-07-20 05:28:54,438 INFO L168 Benchmark]: Boogie Preprocessor took 120.75 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 94.2 MB in the beginning and 180.5 MB in the end (delta: -86.3 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-07-20 05:28:54,439 INFO L168 Benchmark]: RCFGBuilder took 342.36 ms. Allocated memory is still 202.9 MB. Free memory was 180.5 MB in the beginning and 162.3 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. [2020-07-20 05:28:54,445 INFO L168 Benchmark]: TraceAbstraction took 1833.61 ms. Allocated memory was 202.9 MB in the beginning and 233.3 MB in the end (delta: 30.4 MB). Free memory was 161.6 MB in the beginning and 129.3 MB in the end (delta: 32.4 MB). Peak memory consumption was 62.8 MB. Max. memory is 7.1 GB. [2020-07-20 05:28:54,456 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 325.75 ms. Allocated memory is still 140.5 MB. Free memory was 104.9 MB in the beginning and 94.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.75 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 94.2 MB in the beginning and 180.5 MB in the end (delta: -86.3 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 342.36 ms. Allocated memory is still 202.9 MB. Free memory was 180.5 MB in the beginning and 162.3 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1833.61 ms. Allocated memory was 202.9 MB in the beginning and 233.3 MB in the end (delta: 30.4 MB). Free memory was 161.6 MB in the beginning and 129.3 MB in the end (delta: 32.4 MB). Peak memory consumption was 62.8 MB. 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)=7, \old(y)=5] [L43] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=7] [L20] __uint32_t w; VAL [\old(x)=7, x=7] [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)=7, w=2139095041, x=7] [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=7, w=2139095041, x=7] [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=7, w=2139095041, x=7] [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] return 0; VAL [\old(x)=7, \result=0, w=2139095041, x=7] [L43] RET, EXPR __fpclassify_float(x) VAL [\old(x)=7, \old(y)=5, __fpclassify_float(x)=0, x=7, y=5] [L43] COND TRUE __fpclassify_float(x) == 0 [L44] return y; VAL [\old(x)=7, \old(y)=5, \result=5, x=7, y=5] [L62] RET, EXPR fmax_float(x, y) VAL [fmax_float(x, y)=5, x=7, y=5] [L62] float res = fmax_float(x, y); [L64] CALL, EXPR isnan_float(res) VAL [\old(x)=5] [L54] return x != x; VAL [\old(x)=5, \result=0, x=5] [L64] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, res=5, x=7, y=5] [L64] COND TRUE !isnan_float(res) [L65] __VERIFIER_error() VAL [res=5, x=7, y=5] - 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: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 108 SDslu, 43 SDs, 0 SdLazy, 255 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s 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, 0.4s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 5222 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...