/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/double_req_bl_1052c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 23:44:41,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 23:44:41,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 23:44:41,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 23:44:41,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 23:44:41,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 23:44:41,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 23:44:41,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 23:44:41,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 23:44:41,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 23:44:41,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 23:44:41,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 23:44:41,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 23:44:41,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 23:44:41,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 23:44:41,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 23:44:41,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 23:44:41,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 23:44:41,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 23:44:41,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 23:44:41,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 23:44:41,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 23:44:41,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 23:44:41,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 23:44:41,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 23:44:41,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 23:44:41,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 23:44:41,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 23:44:41,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 23:44:41,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 23:44:41,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 23:44:41,389 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 23:44:41,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 23:44:41,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 23:44:41,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 23:44:41,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 23:44:41,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 23:44:41,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 23:44:41,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 23:44:41,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 23:44:41,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 23:44:41,396 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 23:44:41,430 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 23:44:41,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 23:44:41,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 23:44:41,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 23:44:41,432 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 23:44:41,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 23:44:41,432 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 23:44:41,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 23:44:41,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 23:44:41,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 23:44:41,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 23:44:41,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 23:44:41,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 23:44:41,434 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 23:44:41,434 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 23:44:41,434 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 23:44:41,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 23:44:41,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 23:44:41,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 23:44:41,435 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 23:44:41,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 23:44:41,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:44:41,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 23:44:41,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 23:44:41,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 23:44:41,436 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 23:44:41,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 23:44:41,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 23:44:41,437 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 23:44:41,437 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 -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-08-21 23:44:41,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 23:44:41,745 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 23:44:41,749 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 23:44:41,750 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 23:44:41,751 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 23:44:41,751 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-21 23:44:41,823 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd8fc4c9d/64ea278671df4082ba5bbfc18e09fcb1/FLAG269a55ccb [2020-08-21 23:44:42,301 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 23:44:42,301 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-21 23:44:42,308 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd8fc4c9d/64ea278671df4082ba5bbfc18e09fcb1/FLAG269a55ccb [2020-08-21 23:44:42,650 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd8fc4c9d/64ea278671df4082ba5bbfc18e09fcb1 [2020-08-21 23:44:42,660 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 23:44:42,662 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 23:44:42,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 23:44:42,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 23:44:42,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 23:44:42,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:44:42" (1/1) ... [2020-08-21 23:44:42,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42a688b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:42, skipping insertion in model container [2020-08-21 23:44:42,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:44:42" (1/1) ... [2020-08-21 23:44:42,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 23:44:42,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 23:44:42,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:44:42,966 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 23:44:43,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:44:43,159 INFO L208 MainTranslator]: Completed translation [2020-08-21 23:44:43,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:43 WrapperNode [2020-08-21 23:44:43,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 23:44:43,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 23:44:43,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 23:44:43,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 23:44:43,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:43" (1/1) ... [2020-08-21 23:44:43,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:43" (1/1) ... [2020-08-21 23:44:43,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:43" (1/1) ... [2020-08-21 23:44:43,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:43" (1/1) ... [2020-08-21 23:44:43,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:43" (1/1) ... [2020-08-21 23:44:43,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:43" (1/1) ... [2020-08-21 23:44:43,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:43" (1/1) ... [2020-08-21 23:44:43,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 23:44:43,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 23:44:43,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 23:44:43,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 23:44:43,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:43" (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 23:44:43,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 23:44:43,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 23:44:43,314 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-21 23:44:43,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-21 23:44:43,314 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 23:44:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 23:44:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-21 23:44:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 23:44:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 23:44:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 23:44:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 23:44:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 23:44:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 23:44:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-21 23:44:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 23:44:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 23:44:43,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 23:44:43,753 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 23:44:43,753 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-21 23:44:43,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:44:43 BoogieIcfgContainer [2020-08-21 23:44:43,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 23:44:43,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 23:44:43,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 23:44:43,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 23:44:43,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:44:42" (1/3) ... [2020-08-21 23:44:43,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33396dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:44:43, skipping insertion in model container [2020-08-21 23:44:43,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:43" (2/3) ... [2020-08-21 23:44:43,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33396dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:44:43, skipping insertion in model container [2020-08-21 23:44:43,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:44:43" (3/3) ... [2020-08-21 23:44:43,767 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-08-21 23:44:43,777 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 23:44:43,785 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 23:44:43,799 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 23:44:43,821 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 23:44:43,821 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 23:44:43,821 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 23:44:43,821 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 23:44:43,822 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 23:44:43,822 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 23:44:43,822 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 23:44:43,822 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 23:44:43,839 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-08-21 23:44:43,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 23:44:43,846 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:44:43,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:44:43,848 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:44:43,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:44:43,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1202696015, now seen corresponding path program 1 times [2020-08-21 23:44:43,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:44:43,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664827253] [2020-08-21 23:44:43,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:44:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:44,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:44:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:44,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:44:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:44,078 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 23:44:44,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664827253] [2020-08-21 23:44:44,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:44:44,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 23:44:44,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089631449] [2020-08-21 23:44:44,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 23:44:44,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:44:44,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 23:44:44,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 23:44:44,107 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-08-21 23:44:44,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:44:44,337 INFO L93 Difference]: Finished difference Result 94 states and 139 transitions. [2020-08-21 23:44:44,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 23:44:44,339 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-21 23:44:44,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:44:44,350 INFO L225 Difference]: With dead ends: 94 [2020-08-21 23:44:44,350 INFO L226 Difference]: Without dead ends: 47 [2020-08-21 23:44:44,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 23:44:44,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-08-21 23:44:44,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-08-21 23:44:44,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-21 23:44:44,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-08-21 23:44:44,400 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-08-21 23:44:44,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:44:44,401 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-08-21 23:44:44,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 23:44:44,401 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-08-21 23:44:44,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 23:44:44,403 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:44:44,403 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] [2020-08-21 23:44:44,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 23:44:44,403 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:44:44,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:44:44,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1688222156, now seen corresponding path program 1 times [2020-08-21 23:44:44,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:44:44,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007792939] [2020-08-21 23:44:44,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:44:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 23:44:44,454 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 23:44:44,454 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 23:44:44,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 23:44:44,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 11:44:44 BoogieIcfgContainer [2020-08-21 23:44:44,491 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 23:44:44,493 INFO L168 Benchmark]: Toolchain (without parser) took 1830.65 ms. Allocated memory was 139.5 MB in the beginning and 205.5 MB in the end (delta: 66.1 MB). Free memory was 101.5 MB in the beginning and 107.6 MB in the end (delta: -6.0 MB). Peak memory consumption was 60.0 MB. Max. memory is 7.1 GB. [2020-08-21 23:44:44,494 INFO L168 Benchmark]: CDTParser took 0.74 ms. Allocated memory is still 139.5 MB. Free memory was 119.8 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 23:44:44,495 INFO L168 Benchmark]: CACSL2BoogieTranslator took 496.78 ms. Allocated memory was 139.5 MB in the beginning and 205.5 MB in the end (delta: 66.1 MB). Free memory was 101.3 MB in the beginning and 182.4 MB in the end (delta: -81.0 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-08-21 23:44:44,497 INFO L168 Benchmark]: Boogie Preprocessor took 58.32 ms. Allocated memory is still 205.5 MB. Free memory was 182.4 MB in the beginning and 180.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-21 23:44:44,499 INFO L168 Benchmark]: RCFGBuilder took 537.16 ms. Allocated memory is still 205.5 MB. Free memory was 180.3 MB in the beginning and 156.9 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-08-21 23:44:44,500 INFO L168 Benchmark]: TraceAbstraction took 731.41 ms. Allocated memory is still 205.5 MB. Free memory was 156.2 MB in the beginning and 107.6 MB in the end (delta: 48.6 MB). Peak memory consumption was 48.6 MB. Max. memory is 7.1 GB. [2020-08-21 23:44:44,510 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74 ms. Allocated memory is still 139.5 MB. Free memory was 119.8 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 496.78 ms. Allocated memory was 139.5 MB in the beginning and 205.5 MB in the end (delta: 66.1 MB). Free memory was 101.3 MB in the beginning and 182.4 MB in the end (delta: -81.0 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.32 ms. Allocated memory is still 205.5 MB. Free memory was 182.4 MB in the beginning and 180.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 537.16 ms. Allocated memory is still 205.5 MB. Free memory was 180.3 MB in the beginning and 156.9 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 731.41 ms. Allocated memory is still 205.5 MB. Free memory was 156.2 MB in the beginning and 107.6 MB in the end (delta: 48.6 MB). Peak memory consumption was 48.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 103]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 37, overapproximation of bitwiseOr at line 38, overapproximation of someUnaryDOUBLEoperation at line 98, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 102. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L98] double x = -0.0; [L99] CALL, EXPR floor_double(x) [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L26] COND TRUE j0 < 20 [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; [L99] RET, EXPR floor_double(x) [L99] double res = floor_double(x); [L102] EXPR res == -0.0 && __signbit_double(res) == 1 [L102] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L103] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 55 SDslu, 5 SDs, 0 SdLazy, 65 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 756 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...