/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 true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 14:04:43,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:04:43,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:04:43,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:04:43,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:04:43,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:04:43,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:04:43,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:04:43,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:04:43,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:04:43,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:04:43,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:04:43,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:04:43,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:04:43,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:04:43,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:04:43,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:04:43,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:04:43,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:04:43,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:04:43,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:04:43,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:04:43,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:04:43,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:04:43,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 14:04:43,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 14:04:43,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 14:04:43,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 14:04:43,884 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 14:04:43,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 14:04:43,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 14:04:43,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 14:04:43,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 14:04:43,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 14:04:43,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 14:04:43,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 14:04:43,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 14:04:43,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 14:04:43,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:04:43,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:04:43,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:04:43,896 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 [2020-08-21 14:04:43,933 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:04:43,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:04:43,935 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:04:43,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:04:43,936 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:04:43,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:04:43,936 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 14:04:43,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:04:43,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 14:04:43,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:04:43,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:04:43,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:04:43,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:04:43,939 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 14:04:43,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:04:43,939 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:04:43,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:04:43,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:04:43,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:04:43,940 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:04:43,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:04:43,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:04:43,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:04:43,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:04:43,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:04:43,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:04:43,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:04:43,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:04:43,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:04:43,942 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 -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> log-additional-information=true; [2020-08-21 14:04:44,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:04:44,263 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:04:44,266 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:04:44,268 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:04:44,268 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:04:44,269 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232b.c [2020-08-21 14:04:44,331 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c62d2a2e/cf881c9f91ab4bd6852b453592ab43c5/FLAG4e15bf7a3 [2020-08-21 14:04:44,792 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:04:44,793 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1232b.c [2020-08-21 14:04:44,800 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c62d2a2e/cf881c9f91ab4bd6852b453592ab43c5/FLAG4e15bf7a3 [2020-08-21 14:04:45,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c62d2a2e/cf881c9f91ab4bd6852b453592ab43c5 [2020-08-21 14:04:45,228 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:04:45,230 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:04:45,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:04:45,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:04:45,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:04:45,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:04:45" (1/1) ... [2020-08-21 14:04:45,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27030054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:45, skipping insertion in model container [2020-08-21 14:04:45,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:04:45" (1/1) ... [2020-08-21 14:04:45,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:04:45,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:04:45,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:04:45,488 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:04:45,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:04:45,616 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:04:45,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:45 WrapperNode [2020-08-21 14:04:45,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:04:45,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:04:45,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:04:45,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:04:45,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:45" (1/1) ... [2020-08-21 14:04:45,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:45" (1/1) ... [2020-08-21 14:04:45,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:45" (1/1) ... [2020-08-21 14:04:45,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:45" (1/1) ... [2020-08-21 14:04:45,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:45" (1/1) ... [2020-08-21 14:04:45,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:45" (1/1) ... [2020-08-21 14:04:45,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:45" (1/1) ... [2020-08-21 14:04:45,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:04:45,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:04:45,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:04:45,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:04:45,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:45" (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 [2020-08-21 14:04:45,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:04:45,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:04:45,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-08-21 14:04:45,744 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2020-08-21 14:04:45,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-08-21 14:04:45,745 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:04:45,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:04:45,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-21 14:04:45,745 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-08-21 14:04:45,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 14:04:45,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 14:04:45,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 14:04:45,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 14:04:45,746 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2020-08-21 14:04:45,746 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-08-21 14:04:45,746 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:04:45,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:04:45,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:04:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 14:04:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 14:04:46,084 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:04:46,084 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 14:04:46,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:04:46 BoogieIcfgContainer [2020-08-21 14:04:46,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:04:46,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:04:46,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:04:46,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:04:46,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:04:45" (1/3) ... [2020-08-21 14:04:46,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db03a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:04:46, skipping insertion in model container [2020-08-21 14:04:46,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:45" (2/3) ... [2020-08-21 14:04:46,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db03a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:04:46, skipping insertion in model container [2020-08-21 14:04:46,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:04:46" (3/3) ... [2020-08-21 14:04:46,096 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b.c [2020-08-21 14:04:46,106 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:04:46,113 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:04:46,125 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:04:46,145 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:04:46,146 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:04:46,146 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:04:46,146 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:04:46,146 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:04:46,146 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:04:46,146 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:04:46,146 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:04:46,165 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-08-21 14:04:46,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-21 14:04:46,171 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:04:46,172 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] [2020-08-21 14:04:46,172 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:04:46,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:04:46,177 INFO L82 PathProgramCache]: Analyzing trace with hash -411440866, now seen corresponding path program 1 times [2020-08-21 14:04:46,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:04:46,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473920939] [2020-08-21 14:04:46,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:04:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:46,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:04:46,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:46,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:04:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:46,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:04:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:46,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:04:46,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473920939] [2020-08-21 14:04:46,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:04:46,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 14:04:46,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364279949] [2020-08-21 14:04:46,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 14:04:46,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:04:46,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 14:04:46,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 14:04:46,478 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-08-21 14:04:46,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:04:46,707 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2020-08-21 14:04:46,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 14:04:46,709 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-08-21 14:04:46,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:04:46,720 INFO L225 Difference]: With dead ends: 79 [2020-08-21 14:04:46,720 INFO L226 Difference]: Without dead ends: 40 [2020-08-21 14:04:46,726 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 [2020-08-21 14:04:46,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-08-21 14:04:46,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-08-21 14:04:46,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-08-21 14:04:46,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-08-21 14:04:46,812 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2020-08-21 14:04:46,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:04:46,814 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-08-21 14:04:46,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 14:04:46,815 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-08-21 14:04:46,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-21 14:04:46,822 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:04:46,822 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] [2020-08-21 14:04:46,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:04:46,823 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:04:46,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:04:46,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1480673795, now seen corresponding path program 1 times [2020-08-21 14:04:46,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:04:46,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592016852] [2020-08-21 14:04:46,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:04:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:46,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:04:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:46,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:04:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:47,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:04:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:47,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:04:47,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592016852] [2020-08-21 14:04:47,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:04:47,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 14:04:47,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766316131] [2020-08-21 14:04:47,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 14:04:47,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:04:47,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 14:04:47,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 14:04:47,067 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-08-21 14:04:47,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:04:47,322 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-08-21 14:04:47,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 14:04:47,323 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-08-21 14:04:47,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:04:47,326 INFO L225 Difference]: With dead ends: 59 [2020-08-21 14:04:47,326 INFO L226 Difference]: Without dead ends: 44 [2020-08-21 14:04:47,328 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 [2020-08-21 14:04:47,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-21 14:04:47,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-08-21 14:04:47,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-21 14:04:47,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-08-21 14:04:47,340 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2020-08-21 14:04:47,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:04:47,341 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-08-21 14:04:47,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 14:04:47,341 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-08-21 14:04:47,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 14:04:47,342 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:04:47,343 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] [2020-08-21 14:04:47,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:04:47,343 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:04:47,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:04:47,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1766352133, now seen corresponding path program 1 times [2020-08-21 14:04:47,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:04:47,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914420916] [2020-08-21 14:04:47,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:04:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:47,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:04:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:47,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:04:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:47,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:04:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:47,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:04:47,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914420916] [2020-08-21 14:04:47,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:04:47,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 14:04:47,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334067166] [2020-08-21 14:04:47,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 14:04:47,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:04:47,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 14:04:47,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 14:04:47,485 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-08-21 14:04:47,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:04:47,722 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-08-21 14:04:47,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 14:04:47,723 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-08-21 14:04:47,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:04:47,725 INFO L225 Difference]: With dead ends: 63 [2020-08-21 14:04:47,725 INFO L226 Difference]: Without dead ends: 48 [2020-08-21 14:04:47,726 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 [2020-08-21 14:04:47,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-21 14:04:47,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-08-21 14:04:47,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-21 14:04:47,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-08-21 14:04:47,736 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2020-08-21 14:04:47,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:04:47,736 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-08-21 14:04:47,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 14:04:47,737 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-08-21 14:04:47,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 14:04:47,738 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:04:47,738 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] [2020-08-21 14:04:47,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 14:04:47,739 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:04:47,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:04:47,739 INFO L82 PathProgramCache]: Analyzing trace with hash -30599226, now seen corresponding path program 1 times [2020-08-21 14:04:47,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:04:47,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688290679] [2020-08-21 14:04:47,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:04:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 14:04:47,764 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 14:04:47,764 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 14:04:47,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 14:04:47,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 02:04:47 BoogieIcfgContainer [2020-08-21 14:04:47,789 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 14:04:47,793 INFO L168 Benchmark]: Toolchain (without parser) took 2561.74 ms. Allocated memory was 141.6 MB in the beginning and 233.8 MB in the end (delta: 92.3 MB). Free memory was 104.8 MB in the beginning and 138.5 MB in the end (delta: -33.8 MB). Peak memory consumption was 58.5 MB. Max. memory is 7.1 GB. [2020-08-21 14:04:47,794 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 14:04:47,795 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.29 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 104.6 MB in the beginning and 182.6 MB in the end (delta: -78.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-08-21 14:04:47,796 INFO L168 Benchmark]: Boogie Preprocessor took 67.35 ms. Allocated memory is still 203.9 MB. Free memory was 182.6 MB in the beginning and 180.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-21 14:04:47,797 INFO L168 Benchmark]: RCFGBuilder took 402.90 ms. Allocated memory is still 203.9 MB. Free memory was 180.3 MB in the beginning and 160.8 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-08-21 14:04:47,798 INFO L168 Benchmark]: TraceAbstraction took 1699.96 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 160.2 MB in the beginning and 139.9 MB in the end (delta: 20.3 MB). Peak memory consumption was 50.2 MB. Max. memory is 7.1 GB. [2020-08-21 14:04:47,802 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 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 386.29 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 104.6 MB in the beginning and 182.6 MB in the end (delta: -78.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.35 ms. Allocated memory is still 203.9 MB. Free memory was 182.6 MB in the beginning and 180.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 402.90 ms. Allocated memory is still 203.9 MB. Free memory was 180.3 MB in the beginning and 160.8 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1699.96 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 160.2 MB in the beginning and 139.9 MB in the end (delta: 20.3 MB). Peak memory consumption was 50.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 64. Possible FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; [L66] CALL, EXPR fmin_float(x, y) [L36] CALL, EXPR __fpclassify_float(x) [L13] __uint32_t w; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] return 0; [L36] RET, EXPR __fpclassify_float(x) [L36] COND TRUE __fpclassify_float(x) == 0 [L37] return y; [L66] RET, EXPR fmin_float(x, y) [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() - 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, 0.4s 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...