/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 17:04:26,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 17:04:26,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 17:04:26,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 17:04:26,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 17:04:26,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 17:04:26,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 17:04:26,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 17:04:26,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 17:04:26,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 17:04:26,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 17:04:26,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 17:04:26,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 17:04:26,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 17:04:26,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 17:04:26,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 17:04:26,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 17:04:26,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 17:04:26,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 17:04:26,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 17:04:26,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 17:04:26,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 17:04:26,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 17:04:26,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 17:04:26,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 17:04:26,082 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 17:04:26,082 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 17:04:26,085 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 17:04:26,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 17:04:26,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 17:04:26,087 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 17:04:26,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 17:04:26,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 17:04:26,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 17:04:26,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 17:04:26,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 17:04:26,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 17:04:26,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 17:04:26,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 17:04:26,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 17:04:26,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 17:04:26,094 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 17:04:26,116 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 17:04:26,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 17:04:26,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 17:04:26,118 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 17:04:26,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 17:04:26,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 17:04:26,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 17:04:26,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 17:04:26,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 17:04:26,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 17:04:26,119 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 17:04:26,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 17:04:26,120 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 17:04:26,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 17:04:26,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 17:04:26,121 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 17:04:26,121 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 17:04:26,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 17:04:26,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 17:04:26,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 17:04:26,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 17:04:26,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 17:04:26,122 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-17 17:04:26,379 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 17:04:26,392 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 17:04:26,398 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 17:04:26,400 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 17:04:26,400 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 17:04:26,401 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252b.c [2020-07-17 17:04:26,462 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bce12beb5/d7e38fe21e5b4c15aa6fae9b7201f7a5/FLAGc16792612 [2020-07-17 17:04:26,979 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 17:04:26,980 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1252b.c [2020-07-17 17:04:26,986 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bce12beb5/d7e38fe21e5b4c15aa6fae9b7201f7a5/FLAGc16792612 [2020-07-17 17:04:27,352 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bce12beb5/d7e38fe21e5b4c15aa6fae9b7201f7a5 [2020-07-17 17:04:27,360 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 17:04:27,363 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 17:04:27,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 17:04:27,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 17:04:27,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 17:04:27,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:04:27" (1/1) ... [2020-07-17 17:04:27,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c212395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:27, skipping insertion in model container [2020-07-17 17:04:27,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:04:27" (1/1) ... [2020-07-17 17:04:27,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 17:04:27,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 17:04:27,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:04:27,559 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 17:04:27,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:04:27,698 INFO L208 MainTranslator]: Completed translation [2020-07-17 17:04:27,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:27 WrapperNode [2020-07-17 17:04:27,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 17:04:27,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 17:04:27,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 17:04:27,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 17:04:27,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:27" (1/1) ... [2020-07-17 17:04:27,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:27" (1/1) ... [2020-07-17 17:04:27,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:27" (1/1) ... [2020-07-17 17:04:27,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:27" (1/1) ... [2020-07-17 17:04:27,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:27" (1/1) ... [2020-07-17 17:04:27,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:27" (1/1) ... [2020-07-17 17:04:27,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:27" (1/1) ... [2020-07-17 17:04:27,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 17:04:27,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 17:04:27,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 17:04:27,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 17:04:27,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:27" (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 [2020-07-17 17:04:27,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 17:04:27,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 17:04:27,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-07-17 17:04:27,811 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2020-07-17 17:04:27,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-07-17 17:04:27,811 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 17:04:27,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 17:04:27,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-07-17 17:04:27,812 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-07-17 17:04:27,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 17:04:27,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-17 17:04:27,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 17:04:27,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 17:04:27,813 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2020-07-17 17:04:27,813 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-07-17 17:04:27,813 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 17:04:27,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 17:04:27,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 17:04:27,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 17:04:27,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-17 17:04:28,163 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 17:04:28,163 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-17 17:04:28,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:04:28 BoogieIcfgContainer [2020-07-17 17:04:28,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 17:04:28,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 17:04:28,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 17:04:28,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 17:04:28,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 05:04:27" (1/3) ... [2020-07-17 17:04:28,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4797d289 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:04:28, skipping insertion in model container [2020-07-17 17:04:28,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:27" (2/3) ... [2020-07-17 17:04:28,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4797d289 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:04:28, skipping insertion in model container [2020-07-17 17:04:28,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:04:28" (3/3) ... [2020-07-17 17:04:28,176 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b.c [2020-07-17 17:04:28,187 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 17:04:28,194 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 17:04:28,207 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 17:04:28,224 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 17:04:28,224 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 17:04:28,224 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-17 17:04:28,225 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 17:04:28,225 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 17:04:28,225 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 17:04:28,225 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 17:04:28,225 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 17:04:28,241 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-07-17 17:04:28,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-17 17:04:28,253 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:04:28,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:04:28,255 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:04:28,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:04:28,260 INFO L82 PathProgramCache]: Analyzing trace with hash 2131665852, now seen corresponding path program 1 times [2020-07-17 17:04:28,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:04:28,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754741075] [2020-07-17 17:04:28,267 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:04:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:28,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:04:28,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754741075] [2020-07-17 17:04:28,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:04:28,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 17:04:28,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668207921] [2020-07-17 17:04:28,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 17:04:28,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:04:28,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 17:04:28,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:04:28,567 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 4 states. [2020-07-17 17:04:28,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:04:28,856 INFO L93 Difference]: Finished difference Result 164 states and 192 transitions. [2020-07-17 17:04:28,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 17:04:28,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-07-17 17:04:28,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:04:28,877 INFO L225 Difference]: With dead ends: 164 [2020-07-17 17:04:28,878 INFO L226 Difference]: Without dead ends: 81 [2020-07-17 17:04:28,888 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 [2020-07-17 17:04:28,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-07-17 17:04:28,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-07-17 17:04:28,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-17 17:04:28,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2020-07-17 17:04:28,963 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 34 [2020-07-17 17:04:28,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:04:28,964 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2020-07-17 17:04:28,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 17:04:28,965 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2020-07-17 17:04:28,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-17 17:04:28,968 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:04:28,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:04:28,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 17:04:28,969 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:04:28,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:04:28,969 INFO L82 PathProgramCache]: Analyzing trace with hash -630897281, now seen corresponding path program 1 times [2020-07-17 17:04:28,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:04:28,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756483758] [2020-07-17 17:04:28,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:04:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:29,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:04:29,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756483758] [2020-07-17 17:04:29,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:04:29,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 17:04:29,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124600784] [2020-07-17 17:04:29,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 17:04:29,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:04:29,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 17:04:29,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 17:04:29,209 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand 6 states. [2020-07-17 17:04:29,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:04:29,423 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2020-07-17 17:04:29,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 17:04:29,424 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-07-17 17:04:29,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:04:29,428 INFO L225 Difference]: With dead ends: 117 [2020-07-17 17:04:29,428 INFO L226 Difference]: Without dead ends: 86 [2020-07-17 17:04:29,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-17 17:04:29,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-07-17 17:04:29,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-07-17 17:04:29,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-07-17 17:04:29,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-07-17 17:04:29,447 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 43 [2020-07-17 17:04:29,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:04:29,447 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-07-17 17:04:29,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 17:04:29,448 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-07-17 17:04:29,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-17 17:04:29,450 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:04:29,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:04:29,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 17:04:29,450 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:04:29,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:04:29,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1681903777, now seen corresponding path program 1 times [2020-07-17 17:04:29,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:04:29,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457595520] [2020-07-17 17:04:29,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:04:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:29,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:04:29,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457595520] [2020-07-17 17:04:29,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:04:29,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 17:04:29,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651033640] [2020-07-17 17:04:29,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 17:04:29,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:04:29,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 17:04:29,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 17:04:29,649 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 6 states. [2020-07-17 17:04:29,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:04:29,834 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions. [2020-07-17 17:04:29,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 17:04:29,835 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-07-17 17:04:29,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:04:29,836 INFO L225 Difference]: With dead ends: 121 [2020-07-17 17:04:29,837 INFO L226 Difference]: Without dead ends: 90 [2020-07-17 17:04:29,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-17 17:04:29,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-07-17 17:04:29,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2020-07-17 17:04:29,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-07-17 17:04:29,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-07-17 17:04:29,851 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 46 [2020-07-17 17:04:29,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:04:29,852 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-07-17 17:04:29,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 17:04:29,852 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-07-17 17:04:29,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-17 17:04:29,854 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:04:29,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:04:29,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 17:04:29,854 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:04:29,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:04:29,855 INFO L82 PathProgramCache]: Analyzing trace with hash -969429089, now seen corresponding path program 1 times [2020-07-17 17:04:29,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:04:29,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287439436] [2020-07-17 17:04:29,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:04:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 17:04:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 17:04:30,092 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-17 17:04:30,092 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 17:04:30,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 17:04:30,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 05:04:30 BoogieIcfgContainer [2020-07-17 17:04:30,141 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 17:04:30,145 INFO L168 Benchmark]: Toolchain (without parser) took 2780.75 ms. Allocated memory was 140.5 MB in the beginning and 234.4 MB in the end (delta: 93.8 MB). Free memory was 102.3 MB in the beginning and 108.5 MB in the end (delta: -6.2 MB). Peak memory consumption was 87.6 MB. Max. memory is 7.1 GB. [2020-07-17 17:04:30,147 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-17 17:04:30,149 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.30 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 101.9 MB in the beginning and 180.8 MB in the end (delta: -78.9 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-07-17 17:04:30,150 INFO L168 Benchmark]: Boogie Preprocessor took 53.00 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 178.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-07-17 17:04:30,151 INFO L168 Benchmark]: RCFGBuilder took 415.13 ms. Allocated memory is still 202.4 MB. Free memory was 178.4 MB in the beginning and 155.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-07-17 17:04:30,157 INFO L168 Benchmark]: TraceAbstraction took 1971.82 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 154.6 MB in the beginning and 108.5 MB in the end (delta: 46.1 MB). Peak memory consumption was 78.1 MB. Max. memory is 7.1 GB. [2020-07-17 17:04:30,168 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 335.30 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 101.9 MB in the beginning and 180.8 MB in the end (delta: -78.9 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.00 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 178.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 415.13 ms. Allocated memory is still 202.4 MB. Free memory was 178.4 MB in the beginning and 155.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1971.82 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 154.6 MB in the beginning and 108.5 MB in the end (delta: 46.1 MB). Peak memory consumption was 78.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 74. Possible FailurePath: [L73] float x = 0.0f; VAL [x=0] [L74] float y = -0.0f; VAL [x=0] [L75] CALL, EXPR fmax_float(x, y) VAL [\old(x)=0, \old(y)=4286578694] [L44] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0] [L21] __uint32_t w; VAL [\old(x)=0, x=0] [L24] ieee_float_shape_type gf_u; VAL [\old(x)=0, gf_u={2:0}, x=0] [L25] gf_u.value = (x) VAL [\old(x)=0, gf_u={2:0}, x=0] [L26] EXPR gf_u.word VAL [\old(x)=0, gf_u={2:0}, gf_u.word=4286578689, x=0] [L26] (w) = gf_u.word VAL [(w) = gf_u.word=4286578691, \old(x)=0, gf_u={2:0}, gf_u.word=4286578689, w=4286578689, x=0] [L29] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=0, w=4286578689, x=0] [L31-L32] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L34-L35] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L37] COND FALSE !(w == 0x7f800000 || w == 0xff800000) VAL [\old(x)=0, w=4286578689, x=0] [L40] return 0; VAL [\old(x)=0, \result=0, w=4286578689, x=0] [L44] RET, EXPR __fpclassify_float(x) VAL [\old(x)=0, \old(y)=4286578694, __fpclassify_float(x)=0, x=0, y=4286578694] [L44] COND TRUE __fpclassify_float(x) == 0 VAL [\old(x)=0, \old(y)=4286578694, __fpclassify_float(x)=0, x=0, y=4286578694] [L45] return y; VAL [\old(x)=0, \old(y)=4286578694, \result=4286578694, x=0, y=4286578694] [L75] RET, EXPR fmax_float(x, y) VAL [fmax_float(x, y)=4286578694, x=0, y=4286578694] [L75] float res = fmax_float(x, y); VAL [fmax_float(x, y)=4286578694, res=4286578694, x=0, y=4286578694] [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=4286578694, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=4286578694] [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) VAL [res=4286578694, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=4286578694] [L79] __VERIFIER_error() VAL [res=4286578694, x=0, y=4286578694] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 89 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: 267 SDtfs, 53 SDslu, 494 SDs, 0 SdLazy, 352 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred 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, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 9534 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...