/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=DEEPEST --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_1092a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 20:30:54,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 20:30:54,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 20:30:54,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 20:30:54,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 20:30:54,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 20:30:54,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 20:30:54,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 20:30:54,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 20:30:54,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 20:30:54,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 20:30:54,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 20:30:54,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 20:30:54,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 20:30:54,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 20:30:54,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 20:30:54,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 20:30:54,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 20:30:54,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 20:30:54,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 20:30:54,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 20:30:54,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 20:30:54,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 20:30:54,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 20:30:54,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 20:30:54,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 20:30:54,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 20:30:54,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 20:30:54,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 20:30:54,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 20:30:54,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 20:30:54,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 20:30:54,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 20:30:54,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 20:30:54,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 20:30:54,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 20:30:54,425 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 20:30:54,425 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 20:30:54,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 20:30:54,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 20:30:54,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 20:30:54,429 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 20:30:54,471 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 20:30:54,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 20:30:54,474 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 20:30:54,474 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 20:30:54,474 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 20:30:54,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 20:30:54,475 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 20:30:54,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 20:30:54,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 20:30:54,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 20:30:54,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 20:30:54,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 20:30:54,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 20:30:54,477 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 20:30:54,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 20:30:54,477 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 20:30:54,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 20:30:54,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 20:30:54,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 20:30:54,478 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 20:30:54,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 20:30:54,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 20:30:54,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 20:30:54,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 20:30:54,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 20:30:54,479 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 20:30:54,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 20:30:54,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 20:30:54,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 20:30:54,480 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=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-08-21 20:30:54,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 20:30:54,772 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 20:30:54,776 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 20:30:54,777 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 20:30:54,778 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 20:30:54,779 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-21 20:30:54,853 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8da44141/e21570e1ae7549aca9c5661d3aff0de5/FLAG8d3a3c822 [2020-08-21 20:30:55,338 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 20:30:55,339 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-21 20:30:55,346 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8da44141/e21570e1ae7549aca9c5661d3aff0de5/FLAG8d3a3c822 [2020-08-21 20:30:55,684 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8da44141/e21570e1ae7549aca9c5661d3aff0de5 [2020-08-21 20:30:55,692 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 20:30:55,694 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 20:30:55,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 20:30:55,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 20:30:55,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 20:30:55,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:30:55" (1/1) ... [2020-08-21 20:30:55,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1592531a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:30:55, skipping insertion in model container [2020-08-21 20:30:55,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:30:55" (1/1) ... [2020-08-21 20:30:55,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 20:30:55,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 20:30:55,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:30:55,913 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 20:30:55,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:30:56,054 INFO L208 MainTranslator]: Completed translation [2020-08-21 20:30:56,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:30:56 WrapperNode [2020-08-21 20:30:56,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 20:30:56,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 20:30:56,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 20:30:56,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 20:30:56,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:30:56" (1/1) ... [2020-08-21 20:30:56,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:30:56" (1/1) ... [2020-08-21 20:30:56,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:30:56" (1/1) ... [2020-08-21 20:30:56,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:30:56" (1/1) ... [2020-08-21 20:30:56,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:30:56" (1/1) ... [2020-08-21 20:30:56,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:30:56" (1/1) ... [2020-08-21 20:30:56,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:30:56" (1/1) ... [2020-08-21 20:30:56,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 20:30:56,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 20:30:56,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 20:30:56,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 20:30:56,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:30:56" (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 20:30:56,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 20:30:56,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 20:30:56,188 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 20:30:56,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-21 20:30:56,188 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 20:30:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 20:30:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 20:30:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-21 20:30:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 20:30:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 20:30:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 20:30:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 20:30:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 20:30:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 20:30:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 20:30:56,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 20:30:56,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 20:30:56,597 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 20:30:56,598 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 20:30:56,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:30:56 BoogieIcfgContainer [2020-08-21 20:30:56,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 20:30:56,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 20:30:56,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 20:30:56,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 20:30:56,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 08:30:55" (1/3) ... [2020-08-21 20:30:56,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1232bd54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:30:56, skipping insertion in model container [2020-08-21 20:30:56,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:30:56" (2/3) ... [2020-08-21 20:30:56,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1232bd54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:30:56, skipping insertion in model container [2020-08-21 20:30:56,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:30:56" (3/3) ... [2020-08-21 20:30:56,610 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092a.c [2020-08-21 20:30:56,620 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 20:30:56,629 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 20:30:56,642 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 20:30:56,666 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 20:30:56,667 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 20:30:56,667 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 20:30:56,667 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 20:30:56,667 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 20:30:56,667 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 20:30:56,668 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 20:30:56,668 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 20:30:56,686 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-08-21 20:30:56,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 20:30:56,693 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:30:56,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:30:56,695 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:30:56,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:30:56,701 INFO L82 PathProgramCache]: Analyzing trace with hash -321966810, now seen corresponding path program 1 times [2020-08-21 20:30:56,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:30:56,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659170174] [2020-08-21 20:30:56,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:30:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:56,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:30:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:57,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:30:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:30:57,041 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 20:30:57,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659170174] [2020-08-21 20:30:57,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:30:57,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 20:30:57,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205263561] [2020-08-21 20:30:57,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 20:30:57,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:30:57,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 20:30:57,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 20:30:57,068 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-08-21 20:30:57,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:30:57,269 INFO L93 Difference]: Finished difference Result 76 states and 114 transitions. [2020-08-21 20:30:57,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 20:30:57,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-08-21 20:30:57,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:30:57,283 INFO L225 Difference]: With dead ends: 76 [2020-08-21 20:30:57,283 INFO L226 Difference]: Without dead ends: 38 [2020-08-21 20:30:57,287 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 20:30:57,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-21 20:30:57,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-21 20:30:57,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-21 20:30:57,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-08-21 20:30:57,330 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 18 [2020-08-21 20:30:57,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:30:57,330 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-08-21 20:30:57,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 20:30:57,330 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2020-08-21 20:30:57,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 20:30:57,332 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:30:57,332 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 20:30:57,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 20:30:57,332 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:30:57,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:30:57,333 INFO L82 PathProgramCache]: Analyzing trace with hash 422703747, now seen corresponding path program 1 times [2020-08-21 20:30:57,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:30:57,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026139121] [2020-08-21 20:30:57,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:30:57,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 20:30:57,377 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 20:30:57,377 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 20:30:57,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 20:30:57,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 08:30:57 BoogieIcfgContainer [2020-08-21 20:30:57,397 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 20:30:57,400 INFO L168 Benchmark]: Toolchain (without parser) took 1705.08 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 103.7 MB in the beginning and 112.4 MB in the end (delta: -8.7 MB). Peak memory consumption was 54.7 MB. Max. memory is 7.1 GB. [2020-08-21 20:30:57,401 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-21 20:30:57,405 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.90 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 103.5 MB in the beginning and 182.3 MB in the end (delta: -78.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-08-21 20:30:57,406 INFO L168 Benchmark]: Boogie Preprocessor took 54.95 ms. Allocated memory is still 203.9 MB. Free memory was 182.3 MB in the beginning and 179.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-21 20:30:57,407 INFO L168 Benchmark]: RCFGBuilder took 489.26 ms. Allocated memory is still 203.9 MB. Free memory was 179.9 MB in the beginning and 158.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-08-21 20:30:57,408 INFO L168 Benchmark]: TraceAbstraction took 794.50 ms. Allocated memory is still 203.9 MB. Free memory was 157.4 MB in the beginning and 112.4 MB in the end (delta: 45.0 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2020-08-21 20:30:57,412 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 361.90 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 103.5 MB in the beginning and 182.3 MB in the end (delta: -78.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.95 ms. Allocated memory is still 203.9 MB. Free memory was 182.3 MB in the beginning and 179.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 489.26 ms. Allocated memory is still 203.9 MB. Free memory was 179.9 MB in the beginning and 158.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 794.50 ms. Allocated memory is still 203.9 MB. Free memory was 157.4 MB in the beginning and 112.4 MB in the end (delta: 45.0 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 96]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 41, overapproximation of bitwiseOr at line 42, overapproximation of someUnaryDOUBLEoperation at line 91, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 95. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; [L91] double x = -0.0; [L92] CALL, EXPR ceil_double(x) [L20] __int32_t i0, i1, j0; [L21] __uint32_t i, j; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L29] COND TRUE j0 < 20 [L30] COND FALSE !(j0 < 0) [L41] i = (0x000fffff) >> j0 [L42] COND TRUE ((i0 & i) | i1) == 0 [L43] return x; [L92] RET, EXPR ceil_double(x) [L92] double res = ceil_double(x); [L95] COND TRUE res != x [L96] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 47 SDslu, 5 SDs, 0 SdLazy, 55 SolverSat, 7 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=42occurred 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, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 697 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...