/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.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 10:29:19,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:29:19,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:29:19,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:29:19,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:29:19,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:29:19,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:29:19,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:29:19,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:29:19,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:29:19,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:29:19,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:29:19,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:29:19,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:29:19,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:29:19,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:29:19,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:29:19,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:29:19,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:29:19,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:29:19,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:29:19,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:29:19,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:29:19,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:29:19,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 10:29:19,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:29:19,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:29:19,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:29:19,795 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 10:29:19,839 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:29:19,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:29:19,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:29:19,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:29:19,841 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:29:19,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:29:19,841 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:29:19,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:29:19,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:29:19,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:29:19,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:29:19,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:29:19,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:29:19,843 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:29:19,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:29:19,843 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:29:19,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:29:19,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:29:19,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:29:19,845 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:29:19,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:29:19,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:29:19,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:29:19,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:29:19,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:29:19,846 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:29:19,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:29:19,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:29:19,847 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:29:19,847 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES 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: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-18 10:29:20,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:29:20,159 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:29:20,162 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:29:20,164 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:29:20,164 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:29:20,165 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232a.c [2020-08-18 10:29:20,229 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5148adb1d/de9338f4ede9442d8407daba779837e5/FLAG3c961248f [2020-08-18 10:29:20,637 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:29:20,638 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1232a.c [2020-08-18 10:29:20,645 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5148adb1d/de9338f4ede9442d8407daba779837e5/FLAG3c961248f [2020-08-18 10:29:21,005 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5148adb1d/de9338f4ede9442d8407daba779837e5 [2020-08-18 10:29:21,016 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:29:21,017 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:29:21,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:29:21,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:29:21,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:29:21,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:29:21" (1/1) ... [2020-08-18 10:29:21,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6340f19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:21, skipping insertion in model container [2020-08-18 10:29:21,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:29:21" (1/1) ... [2020-08-18 10:29:21,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:29:21,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:29:21,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:29:21,242 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:29:21,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:29:21,374 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:29:21,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:21 WrapperNode [2020-08-18 10:29:21,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:29:21,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:29:21,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:29:21,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:29:21,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:21" (1/1) ... [2020-08-18 10:29:21,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:21" (1/1) ... [2020-08-18 10:29:21,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:21" (1/1) ... [2020-08-18 10:29:21,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:21" (1/1) ... [2020-08-18 10:29:21,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:21" (1/1) ... [2020-08-18 10:29:21,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:21" (1/1) ... [2020-08-18 10:29:21,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:21" (1/1) ... [2020-08-18 10:29:21,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:29:21,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:29:21,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:29:21,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:29:21,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:21" (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 [2020-08-18 10:29:21,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:29:21,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:29:21,489 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-18 10:29:21,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-08-18 10:29:21,490 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2020-08-18 10:29:21,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-18 10:29:21,491 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:29:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:29:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-18 10:29:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-18 10:29:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-08-18 10:29:21,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 10:29:21,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 10:29:21,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:29:21,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:29:21,494 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2020-08-18 10:29:21,494 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-18 10:29:21,494 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:29:21,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:29:21,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:29:21,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:29:21,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 10:29:21,800 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:29:21,800 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 10:29:21,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:29:21 BoogieIcfgContainer [2020-08-18 10:29:21,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:29:21,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:29:21,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:29:21,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:29:21,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:29:21" (1/3) ... [2020-08-18 10:29:21,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e4910d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:29:21, skipping insertion in model container [2020-08-18 10:29:21,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:21" (2/3) ... [2020-08-18 10:29:21,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e4910d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:29:21, skipping insertion in model container [2020-08-18 10:29:21,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:29:21" (3/3) ... [2020-08-18 10:29:21,814 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a.c [2020-08-18 10:29:21,825 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:29:21,832 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:29:21,847 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:29:21,871 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:29:21,871 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:29:21,871 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:29:21,871 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:29:21,872 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:29:21,872 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:29:21,872 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:29:21,872 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:29:21,902 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-08-18 10:29:21,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-18 10:29:21,920 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:29:21,921 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] [2020-08-18 10:29:21,922 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:29:21,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:29:21,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1786760399, now seen corresponding path program 1 times [2020-08-18 10:29:21,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:29:21,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733146020] [2020-08-18 10:29:21,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:29:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:29:22,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:29:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:29:22,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:29:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:29:22,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:29:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:29:22,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:29:22,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733146020] [2020-08-18 10:29:22,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:29:22,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 10:29:22,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243460335] [2020-08-18 10:29:22,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 10:29:22,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:29:22,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 10:29:22,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:29:22,180 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-08-18 10:29:22,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:29:22,402 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2020-08-18 10:29:22,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 10:29:22,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-08-18 10:29:22,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:29:22,414 INFO L225 Difference]: With dead ends: 79 [2020-08-18 10:29:22,415 INFO L226 Difference]: Without dead ends: 40 [2020-08-18 10:29:22,418 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 [2020-08-18 10:29:22,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-08-18 10:29:22,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-08-18 10:29:22,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-08-18 10:29:22,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-08-18 10:29:22,463 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2020-08-18 10:29:22,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:29:22,464 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-08-18 10:29:22,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 10:29:22,464 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-08-18 10:29:22,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-18 10:29:22,469 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:29:22,470 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] [2020-08-18 10:29:22,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:29:22,471 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:29:22,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:29:22,472 INFO L82 PathProgramCache]: Analyzing trace with hash -952976765, now seen corresponding path program 1 times [2020-08-18 10:29:22,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:29:22,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603537325] [2020-08-18 10:29:22,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:29:22,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:29:22,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:29:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:29:22,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:29:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:29:22,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:29:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:29:22,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:29:22,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603537325] [2020-08-18 10:29:22,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:29:22,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 10:29:22,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286495664] [2020-08-18 10:29:22,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 10:29:22,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:29:22,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 10:29:22,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 10:29:22,784 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-08-18 10:29:23,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:29:23,037 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-08-18 10:29:23,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 10:29:23,038 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-08-18 10:29:23,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:29:23,041 INFO L225 Difference]: With dead ends: 59 [2020-08-18 10:29:23,041 INFO L226 Difference]: Without dead ends: 44 [2020-08-18 10:29:23,043 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 [2020-08-18 10:29:23,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-18 10:29:23,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-08-18 10:29:23,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-18 10:29:23,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-08-18 10:29:23,055 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2020-08-18 10:29:23,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:29:23,056 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-08-18 10:29:23,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 10:29:23,056 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-08-18 10:29:23,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-18 10:29:23,057 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:29:23,058 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] [2020-08-18 10:29:23,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:29:23,058 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:29:23,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:29:23,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1944362408, now seen corresponding path program 1 times [2020-08-18 10:29:23,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:29:23,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757232912] [2020-08-18 10:29:23,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:29:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:29:23,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:29:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:29:23,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:29:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:29:23,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:29:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:29:23,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:29:23,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757232912] [2020-08-18 10:29:23,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:29:23,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 10:29:23,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441514390] [2020-08-18 10:29:23,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 10:29:23,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:29:23,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 10:29:23,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 10:29:23,236 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-08-18 10:29:23,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:29:23,439 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-08-18 10:29:23,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 10:29:23,440 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-08-18 10:29:23,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:29:23,441 INFO L225 Difference]: With dead ends: 63 [2020-08-18 10:29:23,441 INFO L226 Difference]: Without dead ends: 48 [2020-08-18 10:29:23,442 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 [2020-08-18 10:29:23,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-18 10:29:23,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-08-18 10:29:23,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-18 10:29:23,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-08-18 10:29:23,452 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2020-08-18 10:29:23,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:29:23,452 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-08-18 10:29:23,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 10:29:23,452 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-08-18 10:29:23,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-18 10:29:23,454 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:29:23,454 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] [2020-08-18 10:29:23,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 10:29:23,454 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:29:23,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:29:23,455 INFO L82 PathProgramCache]: Analyzing trace with hash 553653529, now seen corresponding path program 1 times [2020-08-18 10:29:23,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:29:23,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232565241] [2020-08-18 10:29:23,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:29:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 10:29:23,476 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 10:29:23,476 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 10:29:23,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 10:29:23,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:29:23 BoogieIcfgContainer [2020-08-18 10:29:23,497 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 10:29:23,500 INFO L168 Benchmark]: Toolchain (without parser) took 2481.30 ms. Allocated memory was 141.0 MB in the beginning and 234.9 MB in the end (delta: 93.8 MB). Free memory was 103.8 MB in the beginning and 137.7 MB in the end (delta: -34.0 MB). Peak memory consumption was 59.9 MB. Max. memory is 7.1 GB. [2020-08-18 10:29:23,501 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 10:29:23,502 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.13 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.4 MB in the beginning and 182.8 MB in the end (delta: -79.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-08-18 10:29:23,503 INFO L168 Benchmark]: Boogie Preprocessor took 43.44 ms. Allocated memory is still 204.5 MB. Free memory was 182.8 MB in the beginning and 180.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-18 10:29:23,503 INFO L168 Benchmark]: RCFGBuilder took 385.16 ms. Allocated memory is still 204.5 MB. Free memory was 180.4 MB in the beginning and 159.2 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-08-18 10:29:23,505 INFO L168 Benchmark]: TraceAbstraction took 1690.57 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 158.5 MB in the beginning and 137.7 MB in the end (delta: 20.8 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. [2020-08-18 10:29:23,509 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 357.13 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.4 MB in the beginning and 182.8 MB in the end (delta: -79.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.44 ms. Allocated memory is still 204.5 MB. Free memory was 182.8 MB in the beginning and 180.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 385.16 ms. Allocated memory is still 204.5 MB. Free memory was 180.4 MB in the beginning and 159.2 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1690.57 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 158.5 MB in the beginning and 137.7 MB in the end (delta: 20.8 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someUnaryDOUBLEoperation at line 75. Possible FailurePath: [L74] double x = 0.0; [L75] double y = -0.0; [L76] CALL, EXPR fmin_double(x, y) [L46] CALL, EXPR __fpclassify_double(x) [L19] __uint32_t msw, lsw; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L31-L32] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L34-L35] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L38-L39] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L42] return 0; [L46] RET, EXPR __fpclassify_double(x) [L46] COND TRUE __fpclassify_double(x) == 0 [L47] return y; [L76] RET, EXPR fmin_double(x, y) [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 47 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, 0.4s 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, 0.5s 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...