/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_1232b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 21:37:12,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 21:37:12,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 21:37:12,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 21:37:12,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 21:37:12,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 21:37:12,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 21:37:12,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 21:37:12,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 21:37:12,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 21:37:12,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 21:37:12,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 21:37:12,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 21:37:12,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 21:37:12,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 21:37:12,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 21:37:12,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 21:37:12,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 21:37:12,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 21:37:12,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 21:37:12,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 21:37:12,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 21:37:12,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 21:37:12,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 21:37:12,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 21:37:13,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 21:37:13,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 21:37:13,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 21:37:13,011 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 21:37:13,028 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 21:37:13,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 21:37:13,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 21:37:13,030 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 21:37:13,031 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 21:37:13,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 21:37:13,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 21:37:13,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 21:37:13,032 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 21:37:13,032 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 21:37:13,033 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 21:37:13,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 21:37:13,033 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 21:37:13,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 21:37:13,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 21:37:13,034 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 21:37:13,034 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 21:37:13,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 21:37:13,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 21:37:13,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 21:37:13,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 21:37:13,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 21:37:13,036 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 [2020-09-04 21:37:13,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 21:37:13,525 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 21:37:13,529 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 21:37:13,532 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 21:37:13,532 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 21:37:13,533 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232b.c [2020-09-04 21:37:13,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ba37217f/089ef91e05bc4e5389e09da04ac30fdc/FLAG0ad3ce0aa [2020-09-04 21:37:14,164 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 21:37:14,165 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1232b.c [2020-09-04 21:37:14,174 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ba37217f/089ef91e05bc4e5389e09da04ac30fdc/FLAG0ad3ce0aa [2020-09-04 21:37:14,498 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ba37217f/089ef91e05bc4e5389e09da04ac30fdc [2020-09-04 21:37:14,513 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 21:37:14,515 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 21:37:14,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 21:37:14,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 21:37:14,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 21:37:14,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 09:37:14" (1/1) ... [2020-09-04 21:37:14,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1855c216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:14, skipping insertion in model container [2020-09-04 21:37:14,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 09:37:14" (1/1) ... [2020-09-04 21:37:14,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 21:37:14,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 21:37:14,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 21:37:14,802 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 21:37:14,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 21:37:14,861 INFO L208 MainTranslator]: Completed translation [2020-09-04 21:37:14,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:14 WrapperNode [2020-09-04 21:37:14,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 21:37:14,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 21:37:14,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 21:37:14,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 21:37:14,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:14" (1/1) ... [2020-09-04 21:37:14,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:14" (1/1) ... [2020-09-04 21:37:14,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:14" (1/1) ... [2020-09-04 21:37:14,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:14" (1/1) ... [2020-09-04 21:37:14,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:14" (1/1) ... [2020-09-04 21:37:14,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:14" (1/1) ... [2020-09-04 21:37:14,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:14" (1/1) ... [2020-09-04 21:37:14,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 21:37:15,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 21:37:15,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 21:37:15,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 21:37:15,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 21:37:15,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 21:37:15,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 21:37:15,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-09-04 21:37:15,075 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2020-09-04 21:37:15,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-09-04 21:37:15,076 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 21:37:15,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 21:37:15,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-04 21:37:15,077 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-09-04 21:37:15,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 21:37:15,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-04 21:37:15,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 21:37:15,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 21:37:15,079 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2020-09-04 21:37:15,080 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-09-04 21:37:15,080 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 21:37:15,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 21:37:15,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 21:37:15,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 21:37:15,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-04 21:37:15,494 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 21:37:15,494 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-04 21:37:15,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 09:37:15 BoogieIcfgContainer [2020-09-04 21:37:15,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 21:37:15,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 21:37:15,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 21:37:15,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 21:37:15,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 09:37:14" (1/3) ... [2020-09-04 21:37:15,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fc7b8e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 09:37:15, skipping insertion in model container [2020-09-04 21:37:15,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:14" (2/3) ... [2020-09-04 21:37:15,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fc7b8e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 09:37:15, skipping insertion in model container [2020-09-04 21:37:15,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 09:37:15" (3/3) ... [2020-09-04 21:37:15,509 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b.c [2020-09-04 21:37:15,520 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 21:37:15,530 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 21:37:15,552 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 21:37:15,574 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 21:37:15,574 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 21:37:15,574 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 21:37:15,575 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 21:37:15,575 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 21:37:15,575 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 21:37:15,575 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 21:37:15,575 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 21:37:15,593 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-09-04 21:37:15,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-04 21:37:15,606 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:37:15,607 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] [2020-09-04 21:37:15,607 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:37:15,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:37:15,614 INFO L82 PathProgramCache]: Analyzing trace with hash -380814032, now seen corresponding path program 1 times [2020-09-04 21:37:15,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:37:15,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287362705] [2020-09-04 21:37:15,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:37:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:15,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:37:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:15,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 21:37:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:15,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:37:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:15,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 21:37:15,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287362705] [2020-09-04 21:37:15,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 21:37:15,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 21:37:15,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437826276] [2020-09-04 21:37:15,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 21:37:15,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:37:15,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 21:37:15,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 21:37:15,940 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 4 states. [2020-09-04 21:37:16,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:37:16,236 INFO L93 Difference]: Finished difference Result 164 states and 192 transitions. [2020-09-04 21:37:16,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 21:37:16,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-09-04 21:37:16,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:37:16,252 INFO L225 Difference]: With dead ends: 164 [2020-09-04 21:37:16,252 INFO L226 Difference]: Without dead ends: 81 [2020-09-04 21:37:16,257 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 [2020-09-04 21:37:16,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-04 21:37:16,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-09-04 21:37:16,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-04 21:37:16,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2020-09-04 21:37:16,323 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 34 [2020-09-04 21:37:16,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:37:16,324 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2020-09-04 21:37:16,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 21:37:16,324 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2020-09-04 21:37:16,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-04 21:37:16,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:37:16,329 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] [2020-09-04 21:37:16,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 21:37:16,329 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:37:16,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:37:16,330 INFO L82 PathProgramCache]: Analyzing trace with hash 133434162, now seen corresponding path program 1 times [2020-09-04 21:37:16,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:37:16,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453062340] [2020-09-04 21:37:16,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:37:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:16,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:37:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:16,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 21:37:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:16,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:37:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:16,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 21:37:16,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453062340] [2020-09-04 21:37:16,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 21:37:16,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 21:37:16,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374623625] [2020-09-04 21:37:16,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 21:37:16,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:37:16,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 21:37:16,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 21:37:16,590 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand 6 states. [2020-09-04 21:37:16,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:37:16,812 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2020-09-04 21:37:16,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 21:37:16,812 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-09-04 21:37:16,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:37:16,817 INFO L225 Difference]: With dead ends: 117 [2020-09-04 21:37:16,817 INFO L226 Difference]: Without dead ends: 86 [2020-09-04 21:37:16,818 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 [2020-09-04 21:37:16,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-04 21:37:16,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-09-04 21:37:16,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-04 21:37:16,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-09-04 21:37:16,836 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 43 [2020-09-04 21:37:16,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:37:16,837 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-09-04 21:37:16,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 21:37:16,837 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-09-04 21:37:16,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-04 21:37:16,839 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:37:16,839 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] [2020-09-04 21:37:16,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 21:37:16,840 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:37:16,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:37:16,840 INFO L82 PathProgramCache]: Analyzing trace with hash 619089939, now seen corresponding path program 1 times [2020-09-04 21:37:16,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:37:16,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435770621] [2020-09-04 21:37:16,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:37:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:16,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:37:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:16,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 21:37:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:17,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:37:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:17,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 21:37:17,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435770621] [2020-09-04 21:37:17,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 21:37:17,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 21:37:17,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836494455] [2020-09-04 21:37:17,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 21:37:17,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:37:17,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 21:37:17,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 21:37:17,087 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 6 states. [2020-09-04 21:37:17,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:37:17,330 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions. [2020-09-04 21:37:17,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 21:37:17,332 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-09-04 21:37:17,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:37:17,335 INFO L225 Difference]: With dead ends: 121 [2020-09-04 21:37:17,336 INFO L226 Difference]: Without dead ends: 90 [2020-09-04 21:37:17,337 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 [2020-09-04 21:37:17,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-04 21:37:17,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2020-09-04 21:37:17,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-04 21:37:17,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-09-04 21:37:17,359 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 46 [2020-09-04 21:37:17,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:37:17,360 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-09-04 21:37:17,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 21:37:17,360 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-09-04 21:37:17,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-04 21:37:17,362 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:37:17,362 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] [2020-09-04 21:37:17,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 21:37:17,363 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:37:17,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:37:17,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1331564627, now seen corresponding path program 1 times [2020-09-04 21:37:17,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:37:17,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301129543] [2020-09-04 21:37:17,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:37:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 21:37:17,395 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 21:37:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 21:37:17,433 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 21:37:17,467 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 21:37:17,467 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 21:37:17,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 21:37:17,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 09:37:17 BoogieIcfgContainer [2020-09-04 21:37:17,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 21:37:17,514 INFO L168 Benchmark]: Toolchain (without parser) took 2997.35 ms. Allocated memory was 146.8 MB in the beginning and 234.4 MB in the end (delta: 87.6 MB). Free memory was 103.9 MB in the beginning and 118.1 MB in the end (delta: -14.2 MB). Peak memory consumption was 73.3 MB. Max. memory is 7.1 GB. [2020-09-04 21:37:17,514 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 21:37:17,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.71 ms. Allocated memory is still 146.8 MB. Free memory was 103.7 MB in the beginning and 92.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-09-04 21:37:17,516 INFO L168 Benchmark]: Boogie Preprocessor took 137.12 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 92.7 MB in the beginning and 181.1 MB in the end (delta: -88.4 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-04 21:37:17,517 INFO L168 Benchmark]: RCFGBuilder took 500.37 ms. Allocated memory is still 203.9 MB. Free memory was 181.1 MB in the beginning and 158.0 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-09-04 21:37:17,518 INFO L168 Benchmark]: TraceAbstraction took 2008.70 ms. Allocated memory was 203.9 MB in the beginning and 234.4 MB in the end (delta: 30.4 MB). Free memory was 157.3 MB in the beginning and 118.1 MB in the end (delta: 39.2 MB). Peak memory consumption was 69.6 MB. Max. memory is 7.1 GB. [2020-09-04 21:37:17,522 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 146.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 345.71 ms. Allocated memory is still 146.8 MB. Free memory was 103.7 MB in the beginning and 92.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.12 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 92.7 MB in the beginning and 181.1 MB in the end (delta: -88.4 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 500.37 ms. Allocated memory is still 203.9 MB. Free memory was 181.1 MB in the beginning and 158.0 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2008.70 ms. Allocated memory was 203.9 MB in the beginning and 234.4 MB in the end (delta: 30.4 MB). Free memory was 157.3 MB in the beginning and 118.1 MB in the end (delta: 39.2 MB). Peak memory consumption was 69.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 64. Possible FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; VAL [y=0] [L66] CALL, EXPR fmin_float(x, y) VAL [\old(x)=4286578693, \old(y)=0] [L36] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=4286578693] [L13] __uint32_t w; VAL [\old(x)=4286578693, x=4286578693] [L16] ieee_float_shape_type gf_u; VAL [\old(x)=4286578693, gf_u={2:0}, x=4286578693] [L17] gf_u.value = (x) VAL [\old(x)=4286578693, gf_u={2:0}, x=4286578693] [L18] EXPR gf_u.word VAL [\old(x)=4286578693, gf_u={2:0}, gf_u.word=4286578689, x=4286578693] [L18] (w) = gf_u.word VAL [(w) = gf_u.word=4286578692, \old(x)=4286578693, gf_u={2:0}, gf_u.word=4286578689, w=4286578689, x=4286578693] [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=4286578693, w=4286578689, x=4286578693] [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=4286578693, w=4286578689, x=4286578693] [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=4286578693, w=4286578689, x=4286578693] [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) VAL [\old(x)=4286578693, w=4286578689, x=4286578693] [L32] return 0; VAL [\old(x)=4286578693, \result=0, w=4286578689, x=4286578693] [L36] RET, EXPR __fpclassify_float(x) VAL [\old(x)=4286578693, \old(y)=0, __fpclassify_float(x)=0, x=4286578693, y=0] [L36] COND TRUE __fpclassify_float(x) == 0 VAL [\old(x)=4286578693, \old(y)=0, __fpclassify_float(x)=0, x=4286578693, y=0] [L37] return y; VAL [\old(x)=4286578693, \old(y)=0, \result=0, x=4286578693, y=0] [L66] RET, EXPR fmin_float(x, y) VAL [fmin_float(x, y)=0, x=4286578693, y=0] [L66] float res = fmin_float(x, y); VAL [fmin_float(x, y)=0, res=0, x=4286578693, y=0] [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=0, res == -0.0f && __signbit_float(res) == 1=0, x=4286578693, y=0] [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) VAL [res=0, res == -0.0f && __signbit_float(res) == 1=0, x=4286578693, y=0] [L70] __VERIFIER_error() VAL [res=0, x=4286578693, y=0] - 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: 0.8s, 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, 0.4s 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, 0.1s 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...