/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/double_req_bl_1252b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 05:28:28,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 05:28:28,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 05:28:28,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 05:28:28,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 05:28:28,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 05:28:28,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 05:28:28,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 05:28:28,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 05:28:28,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 05:28:28,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 05:28:28,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 05:28:28,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 05:28:28,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 05:28:28,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 05:28:28,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 05:28:28,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 05:28:28,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 05:28:28,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 05:28:28,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 05:28:28,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 05:28:28,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 05:28:28,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 05:28:28,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 05:28:28,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 05:28:28,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 05:28:28,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 05:28:28,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 05:28:28,889 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 05:28:28,907 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 05:28:28,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 05:28:28,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 05:28:28,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 05:28:28,909 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 05:28:28,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 05:28:28,909 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 05:28:28,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 05:28:28,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 05:28:28,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 05:28:28,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 05:28:28,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 05:28:28,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 05:28:28,910 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 05:28:28,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 05:28:28,911 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 05:28:28,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 05:28:28,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 05:28:28,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 05:28:28,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 05:28:28,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 05:28:28,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 05:28:28,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 05:28:28,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 05:28:28,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 05:28:28,913 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 05:28:28,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 05:28:28,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 05:28:28,914 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 05:28:28,914 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 05:28:29,176 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 05:28:29,190 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 05:28:29,193 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 05:28:29,195 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 05:28:29,195 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 05:28:29,196 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252b.c [2020-07-20 05:28:29,267 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e1893a11/e3e2b983c93142f7960dd7c380b23371/FLAGfd0fa6ac8 [2020-07-20 05:28:29,724 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 05:28:29,725 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1252b.c [2020-07-20 05:28:29,730 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e1893a11/e3e2b983c93142f7960dd7c380b23371/FLAGfd0fa6ac8 [2020-07-20 05:28:30,067 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e1893a11/e3e2b983c93142f7960dd7c380b23371 [2020-07-20 05:28:30,076 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 05:28:30,079 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 05:28:30,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 05:28:30,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 05:28:30,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 05:28:30,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:28:30" (1/1) ... [2020-07-20 05:28:30,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71e69fc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:30, skipping insertion in model container [2020-07-20 05:28:30,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:28:30" (1/1) ... [2020-07-20 05:28:30,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 05:28:30,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 05:28:30,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:28:30,296 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 05:28:30,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:28:30,463 INFO L208 MainTranslator]: Completed translation [2020-07-20 05:28:30,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:30 WrapperNode [2020-07-20 05:28:30,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 05:28:30,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 05:28:30,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 05:28:30,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 05:28:30,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:30" (1/1) ... [2020-07-20 05:28:30,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:30" (1/1) ... [2020-07-20 05:28:30,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:30" (1/1) ... [2020-07-20 05:28:30,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:30" (1/1) ... [2020-07-20 05:28:30,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:30" (1/1) ... [2020-07-20 05:28:30,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:30" (1/1) ... [2020-07-20 05:28:30,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:30" (1/1) ... [2020-07-20 05:28:30,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 05:28:30,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 05:28:30,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 05:28:30,514 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 05:28:30,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:30" (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 05:28:30,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 05:28:30,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 05:28:30,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-07-20 05:28:30,574 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-07-20 05:28:30,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-07-20 05:28:30,574 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 05:28:30,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 05:28:30,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-20 05:28:30,574 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-07-20 05:28:30,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 05:28:30,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 05:28:30,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 05:28:30,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 05:28:30,575 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-07-20 05:28:30,576 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-07-20 05:28:30,576 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 05:28:30,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 05:28:30,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 05:28:30,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 05:28:30,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 05:28:30,881 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 05:28:30,882 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-20 05:28:30,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:28:30 BoogieIcfgContainer [2020-07-20 05:28:30,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 05:28:30,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 05:28:30,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 05:28:30,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 05:28:30,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:28:30" (1/3) ... [2020-07-20 05:28:30,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e1022e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:28:30, skipping insertion in model container [2020-07-20 05:28:30,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:30" (2/3) ... [2020-07-20 05:28:30,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e1022e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:28:30, skipping insertion in model container [2020-07-20 05:28:30,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:28:30" (3/3) ... [2020-07-20 05:28:30,895 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2020-07-20 05:28:30,908 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 05:28:30,916 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 05:28:30,930 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 05:28:30,955 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 05:28:30,955 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 05:28:30,955 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 05:28:30,956 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 05:28:30,956 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 05:28:30,956 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 05:28:30,956 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 05:28:30,956 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 05:28:30,977 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-07-20 05:28:30,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 05:28:30,983 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:28:30,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:28:30,984 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:28:30,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:28:30,991 INFO L82 PathProgramCache]: Analyzing trace with hash -592398611, now seen corresponding path program 1 times [2020-07-20 05:28:31,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:28:31,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091149197] [2020-07-20 05:28:31,013 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4baf2591 [2020-07-20 05:28:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:31,260 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 05:28:31,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091149197] [2020-07-20 05:28:31,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:28:31,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 05:28:31,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198473519] [2020-07-20 05:28:31,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 05:28:31,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:28:31,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 05:28:31,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 05:28:31,285 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-07-20 05:28:31,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:28:31,498 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2020-07-20 05:28:31,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 05:28:31,501 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-07-20 05:28:31,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:28:31,511 INFO L225 Difference]: With dead ends: 79 [2020-07-20 05:28:31,512 INFO L226 Difference]: Without dead ends: 40 [2020-07-20 05:28:31,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 05:28:31,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-20 05:28:31,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-07-20 05:28:31,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-20 05:28:31,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-07-20 05:28:31,564 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2020-07-20 05:28:31,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:28:31,564 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-07-20 05:28:31,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 05:28:31,565 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-07-20 05:28:31,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 05:28:31,567 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:28:31,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:28:31,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 05:28:31,568 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:28:31,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:28:31,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1646954013, now seen corresponding path program 1 times [2020-07-20 05:28:31,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:28:31,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841686582] [2020-07-20 05:28:31,569 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4baf2591 [2020-07-20 05:28:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:31,771 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 05:28:31,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841686582] [2020-07-20 05:28:31,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:28:31,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 05:28:31,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267841237] [2020-07-20 05:28:31,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 05:28:31,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:28:31,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 05:28:31,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 05:28:31,777 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-07-20 05:28:32,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:28:32,023 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-07-20 05:28:32,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 05:28:32,024 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-07-20 05:28:32,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:28:32,027 INFO L225 Difference]: With dead ends: 59 [2020-07-20 05:28:32,028 INFO L226 Difference]: Without dead ends: 44 [2020-07-20 05:28:32,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-07-20 05:28:32,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-20 05:28:32,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-07-20 05:28:32,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-20 05:28:32,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-07-20 05:28:32,045 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2020-07-20 05:28:32,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:28:32,045 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-07-20 05:28:32,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 05:28:32,046 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-07-20 05:28:32,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 05:28:32,048 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:28:32,048 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 05:28:32,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 05:28:32,048 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:28:32,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:28:32,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1003466516, now seen corresponding path program 1 times [2020-07-20 05:28:32,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:28:32,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363201172] [2020-07-20 05:28:32,050 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4baf2591 [2020-07-20 05:28:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:32,234 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 05:28:32,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363201172] [2020-07-20 05:28:32,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:28:32,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 05:28:32,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895431537] [2020-07-20 05:28:32,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 05:28:32,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:28:32,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 05:28:32,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 05:28:32,236 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-07-20 05:28:32,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:28:32,447 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-07-20 05:28:32,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 05:28:32,448 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-07-20 05:28:32,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:28:32,449 INFO L225 Difference]: With dead ends: 63 [2020-07-20 05:28:32,449 INFO L226 Difference]: Without dead ends: 48 [2020-07-20 05:28:32,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-07-20 05:28:32,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-20 05:28:32,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-07-20 05:28:32,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-20 05:28:32,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-07-20 05:28:32,460 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2020-07-20 05:28:32,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:28:32,460 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-07-20 05:28:32,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 05:28:32,461 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-07-20 05:28:32,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 05:28:32,462 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:28:32,462 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 05:28:32,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 05:28:32,463 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:28:32,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:28:32,463 INFO L82 PathProgramCache]: Analyzing trace with hash -793484843, now seen corresponding path program 1 times [2020-07-20 05:28:32,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:28:32,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657803851] [2020-07-20 05:28:32,464 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4baf2591 [2020-07-20 05:28:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 05:28:32,516 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 05:28:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 05:28:32,550 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 05:28:32,574 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 05:28:32,574 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 05:28:32,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 05:28:32,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:28:32 BoogieIcfgContainer [2020-07-20 05:28:32,606 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 05:28:32,608 INFO L168 Benchmark]: Toolchain (without parser) took 2529.76 ms. Allocated memory was 145.2 MB in the beginning and 235.4 MB in the end (delta: 90.2 MB). Free memory was 103.0 MB in the beginning and 129.1 MB in the end (delta: -26.1 MB). Peak memory consumption was 64.1 MB. Max. memory is 7.1 GB. [2020-07-20 05:28:32,609 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 145.2 MB. Free memory is still 121.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 05:28:32,610 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.13 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 102.6 MB in the beginning and 181.3 MB in the end (delta: -78.7 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-07-20 05:28:32,611 INFO L168 Benchmark]: Boogie Preprocessor took 48.31 ms. Allocated memory is still 202.4 MB. Free memory was 181.3 MB in the beginning and 178.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-07-20 05:28:32,612 INFO L168 Benchmark]: RCFGBuilder took 372.70 ms. Allocated memory is still 202.4 MB. Free memory was 178.9 MB in the beginning and 157.6 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-07-20 05:28:32,613 INFO L168 Benchmark]: TraceAbstraction took 1718.57 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 157.6 MB in the beginning and 129.1 MB in the end (delta: 28.5 MB). Peak memory consumption was 61.5 MB. Max. memory is 7.1 GB. [2020-07-20 05:28:32,616 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 145.2 MB. Free memory is still 121.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 385.13 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 102.6 MB in the beginning and 181.3 MB in the end (delta: -78.7 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.31 ms. Allocated memory is still 202.4 MB. Free memory was 181.3 MB in the beginning and 178.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 372.70 ms. Allocated memory is still 202.4 MB. Free memory was 178.9 MB in the beginning and 157.6 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1718.57 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 157.6 MB in the beginning and 129.1 MB in the end (delta: 28.5 MB). Peak memory consumption was 61.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 85]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 84, overapproximation of someUnaryDOUBLEoperation at line 80. Possible FailurePath: [L79] double x = 0.0; [L80] double y = -0.0; VAL [x=0] [L81] CALL, EXPR fmax_double(x, y) VAL [\old(x)=0, \old(y)=2147483650] [L52] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=0] [L24] __uint32_t msw, lsw; VAL [\old(x)=0, x=0] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=0, lsw=1, msw=2147483647, x=0] [L36-L37] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=0, lsw=1, msw=2147483647, x=0] [L39-L40] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=0, lsw=1, msw=2147483647, x=0] [L43-L44] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L47] return 0; VAL [\old(x)=0, \result=0, lsw=1, msw=2147483647, x=0] [L52] RET, EXPR __fpclassify_double(x) VAL [\old(x)=0, \old(y)=2147483650, __fpclassify_double(x)=0, x=0, y=2147483650] [L52] COND TRUE __fpclassify_double(x) == 0 [L53] return y; VAL [\old(x)=0, \old(y)=2147483650, \result=2147483650, x=0, y=2147483650] [L81] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=2147483650, x=0, y=2147483650] [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=2147483650, res == 0.0 && __signbit_double(res) == 0=0, x=0, y=2147483650] [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() VAL [res=2147483650, x=0, y=2147483650] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 117 SDslu, 43 SDs, 0 SdLazy, 296 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 4170 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...