/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 NUM_VARIABLES --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 01:10:27,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 01:10:27,102 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 01:10:27,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 01:10:27,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 01:10:27,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 01:10:27,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 01:10:27,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 01:10:27,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 01:10:27,143 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 01:10:27,144 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 01:10:27,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 01:10:27,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 01:10:27,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 01:10:27,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 01:10:27,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 01:10:27,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 01:10:27,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 01:10:27,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 01:10:27,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 01:10:27,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 01:10:27,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 01:10:27,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 01:10:27,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 01:10:27,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 01:10:27,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 01:10:27,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 01:10:27,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 01:10:27,180 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 01:10:27,194 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 01:10:27,194 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 01:10:27,196 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 01:10:27,196 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 01:10:27,196 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 01:10:27,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 01:10:27,196 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 01:10:27,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 01:10:27,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 01:10:27,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 01:10:27,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 01:10:27,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 01:10:27,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 01:10:27,198 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 01:10:27,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 01:10:27,198 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 01:10:27,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 01:10:27,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 01:10:27,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 01:10:27,199 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 01:10:27,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 01:10:27,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:10:27,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 01:10:27,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 01:10:27,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 01:10:27,200 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 01:10:27,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 01:10:27,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 01:10:27,201 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 01:10:27,201 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES 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 01:10:27,469 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 01:10:27,488 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 01:10:27,492 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 01:10:27,494 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 01:10:27,494 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 01:10:27,495 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252b.c [2020-07-20 01:10:27,558 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c525a46d/921ce2a8461e4c378ea08b78a41f0c15/FLAG3650c0426 [2020-07-20 01:10:28,024 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 01:10:28,025 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1252b.c [2020-07-20 01:10:28,031 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c525a46d/921ce2a8461e4c378ea08b78a41f0c15/FLAG3650c0426 [2020-07-20 01:10:28,403 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c525a46d/921ce2a8461e4c378ea08b78a41f0c15 [2020-07-20 01:10:28,415 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 01:10:28,418 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 01:10:28,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 01:10:28,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 01:10:28,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 01:10:28,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:10:28" (1/1) ... [2020-07-20 01:10:28,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b69595b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:28, skipping insertion in model container [2020-07-20 01:10:28,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:10:28" (1/1) ... [2020-07-20 01:10:28,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 01:10:28,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 01:10:28,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:10:28,691 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 01:10:28,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:10:28,928 INFO L208 MainTranslator]: Completed translation [2020-07-20 01:10:28,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:28 WrapperNode [2020-07-20 01:10:28,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 01:10:28,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 01:10:28,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 01:10:28,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 01:10:28,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:28" (1/1) ... [2020-07-20 01:10:28,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:28" (1/1) ... [2020-07-20 01:10:28,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:28" (1/1) ... [2020-07-20 01:10:28,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:28" (1/1) ... [2020-07-20 01:10:28,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:28" (1/1) ... [2020-07-20 01:10:29,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:28" (1/1) ... [2020-07-20 01:10:29,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:28" (1/1) ... [2020-07-20 01:10:29,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 01:10:29,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 01:10:29,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 01:10:29,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 01:10:29,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:28" (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 01:10:29,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 01:10:29,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 01:10:29,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-07-20 01:10:29,104 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-07-20 01:10:29,104 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-07-20 01:10:29,104 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 01:10:29,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 01:10:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-20 01:10:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-07-20 01:10:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 01:10:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 01:10:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 01:10:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 01:10:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-07-20 01:10:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-07-20 01:10:29,108 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 01:10:29,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 01:10:29,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 01:10:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 01:10:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 01:10:29,461 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 01:10:29,462 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-20 01:10:29,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:10:29 BoogieIcfgContainer [2020-07-20 01:10:29,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 01:10:29,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 01:10:29,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 01:10:29,473 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 01:10:29,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:10:28" (1/3) ... [2020-07-20 01:10:29,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3c6899 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:10:29, skipping insertion in model container [2020-07-20 01:10:29,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:10:28" (2/3) ... [2020-07-20 01:10:29,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3c6899 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:10:29, skipping insertion in model container [2020-07-20 01:10:29,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:10:29" (3/3) ... [2020-07-20 01:10:29,477 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2020-07-20 01:10:29,490 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 01:10:29,500 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 01:10:29,517 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 01:10:29,544 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 01:10:29,545 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 01:10:29,545 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 01:10:29,545 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 01:10:29,545 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 01:10:29,546 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 01:10:29,546 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 01:10:29,546 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 01:10:29,567 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-07-20 01:10:29,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 01:10:29,575 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:10:29,580 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 01:10:29,580 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:10:29,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:10:29,601 INFO L82 PathProgramCache]: Analyzing trace with hash -592398611, now seen corresponding path program 1 times [2020-07-20 01:10:29,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:10:29,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266588891] [2020-07-20 01:10:29,619 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6c01a145 [2020-07-20 01:10:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:10:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:10:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:10:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:10:29,906 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 01:10:29,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266588891] [2020-07-20 01:10:29,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:10:29,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 01:10:29,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396596025] [2020-07-20 01:10:29,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 01:10:29,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:10:29,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 01:10:29,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:10:29,936 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-07-20 01:10:30,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:10:30,214 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2020-07-20 01:10:30,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 01:10:30,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-07-20 01:10:30,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:10:30,233 INFO L225 Difference]: With dead ends: 79 [2020-07-20 01:10:30,234 INFO L226 Difference]: Without dead ends: 40 [2020-07-20 01:10:30,241 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 01:10:30,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-20 01:10:30,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-07-20 01:10:30,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-20 01:10:30,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-07-20 01:10:30,302 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2020-07-20 01:10:30,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:10:30,302 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-07-20 01:10:30,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 01:10:30,303 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-07-20 01:10:30,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 01:10:30,305 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:10:30,305 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 01:10:30,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 01:10:30,306 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:10:30,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:10:30,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1646954013, now seen corresponding path program 1 times [2020-07-20 01:10:30,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:10:30,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856052300] [2020-07-20 01:10:30,307 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6c01a145 [2020-07-20 01:10:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:10:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:10:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:10:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:10:30,509 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 01:10:30,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856052300] [2020-07-20 01:10:30,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:10:30,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 01:10:30,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823696347] [2020-07-20 01:10:30,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 01:10:30,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:10:30,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 01:10:30,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 01:10:30,516 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-07-20 01:10:30,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:10:30,843 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-07-20 01:10:30,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 01:10:30,844 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-07-20 01:10:30,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:10:30,850 INFO L225 Difference]: With dead ends: 59 [2020-07-20 01:10:30,851 INFO L226 Difference]: Without dead ends: 44 [2020-07-20 01:10:30,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-07-20 01:10:30,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-20 01:10:30,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-07-20 01:10:30,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-20 01:10:30,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-07-20 01:10:30,867 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2020-07-20 01:10:30,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:10:30,867 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-07-20 01:10:30,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 01:10:30,868 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-07-20 01:10:30,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 01:10:30,869 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:10:30,869 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 01:10:30,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 01:10:30,870 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:10:30,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:10:30,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1003466516, now seen corresponding path program 1 times [2020-07-20 01:10:30,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:10:30,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105848548] [2020-07-20 01:10:30,871 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6c01a145 [2020-07-20 01:10:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:10:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:10:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:10:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:10:31,028 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 01:10:31,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105848548] [2020-07-20 01:10:31,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:10:31,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 01:10:31,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100473212] [2020-07-20 01:10:31,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 01:10:31,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:10:31,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 01:10:31,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 01:10:31,031 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-07-20 01:10:31,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:10:31,217 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-07-20 01:10:31,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 01:10:31,217 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-07-20 01:10:31,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:10:31,219 INFO L225 Difference]: With dead ends: 63 [2020-07-20 01:10:31,219 INFO L226 Difference]: Without dead ends: 48 [2020-07-20 01:10:31,220 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 01:10:31,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-20 01:10:31,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-07-20 01:10:31,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-20 01:10:31,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-07-20 01:10:31,230 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2020-07-20 01:10:31,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:10:31,231 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-07-20 01:10:31,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 01:10:31,231 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-07-20 01:10:31,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 01:10:31,232 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:10:31,232 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 01:10:31,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 01:10:31,233 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:10:31,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:10:31,233 INFO L82 PathProgramCache]: Analyzing trace with hash -793484843, now seen corresponding path program 1 times [2020-07-20 01:10:31,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:10:31,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117768849] [2020-07-20 01:10:31,234 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6c01a145 [2020-07-20 01:10:31,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 01:10:31,317 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 01:10:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 01:10:31,415 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 01:10:31,441 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 01:10:31,441 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 01:10:31,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 01:10:31,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:10:31 BoogieIcfgContainer [2020-07-20 01:10:31,476 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 01:10:31,479 INFO L168 Benchmark]: Toolchain (without parser) took 3061.15 ms. Allocated memory was 139.5 MB in the beginning and 233.3 MB in the end (delta: 93.8 MB). Free memory was 102.9 MB in the beginning and 122.9 MB in the end (delta: -19.9 MB). Peak memory consumption was 73.9 MB. Max. memory is 7.1 GB. [2020-07-20 01:10:31,480 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 01:10:31,481 INFO L168 Benchmark]: CACSL2BoogieTranslator took 509.35 ms. Allocated memory was 139.5 MB in the beginning and 208.7 MB in the end (delta: 69.2 MB). Free memory was 102.5 MB in the beginning and 186.4 MB in the end (delta: -83.9 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-07-20 01:10:31,482 INFO L168 Benchmark]: Boogie Preprocessor took 88.99 ms. Allocated memory is still 208.7 MB. Free memory was 186.4 MB in the beginning and 184.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-07-20 01:10:31,483 INFO L168 Benchmark]: RCFGBuilder took 449.13 ms. Allocated memory is still 208.7 MB. Free memory was 183.8 MB in the beginning and 163.5 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-07-20 01:10:31,484 INFO L168 Benchmark]: TraceAbstraction took 2006.34 ms. Allocated memory was 208.7 MB in the beginning and 233.3 MB in the end (delta: 24.6 MB). Free memory was 162.8 MB in the beginning and 122.9 MB in the end (delta: 40.0 MB). Peak memory consumption was 64.6 MB. Max. memory is 7.1 GB. [2020-07-20 01:10:31,488 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 509.35 ms. Allocated memory was 139.5 MB in the beginning and 208.7 MB in the end (delta: 69.2 MB). Free memory was 102.5 MB in the beginning and 186.4 MB in the end (delta: -83.9 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.99 ms. Allocated memory is still 208.7 MB. Free memory was 186.4 MB in the beginning and 184.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 449.13 ms. Allocated memory is still 208.7 MB. Free memory was 183.8 MB in the beginning and 163.5 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2006.34 ms. Allocated memory was 208.7 MB in the beginning and 233.3 MB in the end (delta: 24.6 MB). Free memory was 162.8 MB in the beginning and 122.9 MB in the end (delta: 40.0 MB). Peak memory consumption was 64.6 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)=2146435076] [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=2146435073, x=0] [L36-L37] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=0, lsw=1, msw=2146435073, x=0] [L39-L40] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=0, lsw=1, msw=2146435073, 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=2146435073, x=0] [L52] RET, EXPR __fpclassify_double(x) VAL [\old(x)=0, \old(y)=2146435076, __fpclassify_double(x)=0, x=0, y=2146435076] [L52] COND TRUE __fpclassify_double(x) == 0 [L53] return y; VAL [\old(x)=0, \old(y)=2146435076, \result=2146435076, x=0, y=2146435076] [L81] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=2146435076, x=0, y=2146435076] [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=2146435076, res == 0.0 && __signbit_double(res) == 0=0, x=0, y=2146435076] [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() VAL [res=2146435076, x=0, y=2146435076] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.8s, 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, 0.4s 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...