/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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_1051.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 06:13:44,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 06:13:44,172 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 06:13:44,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 06:13:44,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 06:13:44,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 06:13:44,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 06:13:44,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 06:13:44,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 06:13:44,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 06:13:44,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 06:13:44,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 06:13:44,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 06:13:44,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 06:13:44,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 06:13:44,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 06:13:44,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 06:13:44,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 06:13:44,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 06:13:44,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 06:13:44,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 06:13:44,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 06:13:44,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 06:13:44,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 06:13:44,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 06:13:44,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 06:13:44,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 06:13:44,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 06:13:44,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 06:13:44,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 06:13:44,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 06:13:44,223 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 06:13:44,224 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 06:13:44,225 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 06:13:44,226 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 06:13:44,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 06:13:44,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 06:13:44,227 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 06:13:44,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 06:13:44,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 06:13:44,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 06:13:44,229 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 [2020-08-22 06:13:44,252 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 06:13:44,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 06:13:44,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 06:13:44,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 06:13:44,254 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 06:13:44,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 06:13:44,255 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 06:13:44,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 06:13:44,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 06:13:44,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 06:13:44,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 06:13:44,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 06:13:44,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 06:13:44,256 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 06:13:44,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 06:13:44,256 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 06:13:44,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 06:13:44,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 06:13:44,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 06:13:44,257 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 06:13:44,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 06:13:44,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:13:44,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 06:13:44,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 06:13:44,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 06:13:44,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 06:13:44,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 06:13:44,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 06:13:44,259 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 06:13:44,259 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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-08-22 06:13:44,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 06:13:44,594 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 06:13:44,598 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 06:13:44,599 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 06:13:44,600 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 06:13:44,600 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-08-22 06:13:44,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d5b34911/3655d75a4cb8444bbadcef941e1a2ae1/FLAG18d700d46 [2020-08-22 06:13:45,177 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 06:13:45,177 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-08-22 06:13:45,183 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d5b34911/3655d75a4cb8444bbadcef941e1a2ae1/FLAG18d700d46 [2020-08-22 06:13:45,552 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d5b34911/3655d75a4cb8444bbadcef941e1a2ae1 [2020-08-22 06:13:45,561 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 06:13:45,564 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 06:13:45,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 06:13:45,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 06:13:45,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 06:13:45,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:13:45" (1/1) ... [2020-08-22 06:13:45,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@280c98e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:45, skipping insertion in model container [2020-08-22 06:13:45,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:13:45" (1/1) ... [2020-08-22 06:13:45,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 06:13:45,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 06:13:45,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:13:45,877 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 06:13:46,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:13:46,065 INFO L208 MainTranslator]: Completed translation [2020-08-22 06:13:46,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:46 WrapperNode [2020-08-22 06:13:46,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 06:13:46,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 06:13:46,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 06:13:46,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 06:13:46,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:46" (1/1) ... [2020-08-22 06:13:46,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:46" (1/1) ... [2020-08-22 06:13:46,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:46" (1/1) ... [2020-08-22 06:13:46,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:46" (1/1) ... [2020-08-22 06:13:46,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:46" (1/1) ... [2020-08-22 06:13:46,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:46" (1/1) ... [2020-08-22 06:13:46,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:46" (1/1) ... [2020-08-22 06:13:46,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 06:13:46,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 06:13:46,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 06:13:46,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 06:13:46,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:46" (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 [2020-08-22 06:13:46,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 06:13:46,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 06:13:46,200 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-22 06:13:46,200 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 06:13:46,200 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 06:13:46,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 06:13:46,201 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-22 06:13:46,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 06:13:46,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 06:13:46,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 06:13:46,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 06:13:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 06:13:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 06:13:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 06:13:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 06:13:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 06:13:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 06:13:46,580 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 06:13:46,580 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 06:13:46,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:13:46 BoogieIcfgContainer [2020-08-22 06:13:46,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 06:13:46,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 06:13:46,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 06:13:46,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 06:13:46,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:13:45" (1/3) ... [2020-08-22 06:13:46,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@654f7a01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:13:46, skipping insertion in model container [2020-08-22 06:13:46,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:46" (2/3) ... [2020-08-22 06:13:46,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@654f7a01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:13:46, skipping insertion in model container [2020-08-22 06:13:46,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:13:46" (3/3) ... [2020-08-22 06:13:46,592 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2020-08-22 06:13:46,602 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 06:13:46,609 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 06:13:46,619 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 06:13:46,639 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 06:13:46,639 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 06:13:46,639 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 06:13:46,640 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 06:13:46,640 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 06:13:46,640 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 06:13:46,640 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 06:13:46,640 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 06:13:46,658 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-22 06:13:46,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-22 06:13:46,665 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:13:46,666 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] [2020-08-22 06:13:46,667 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:13:46,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:13:46,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1635654302, now seen corresponding path program 1 times [2020-08-22 06:13:46,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:13:46,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932073191] [2020-08-22 06:13:46,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:13:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:13:46,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:13:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:13:46,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:13:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:13:46,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:13:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:13:46,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:13:46,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932073191] [2020-08-22 06:13:46,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:13:46,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 06:13:46,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691914429] [2020-08-22 06:13:46,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 06:13:46,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:13:46,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 06:13:46,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 06:13:46,981 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-22 06:13:47,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:13:47,230 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-22 06:13:47,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 06:13:47,232 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-22 06:13:47,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:13:47,245 INFO L225 Difference]: With dead ends: 86 [2020-08-22 06:13:47,245 INFO L226 Difference]: Without dead ends: 43 [2020-08-22 06:13:47,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:13:47,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-22 06:13:47,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-22 06:13:47,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-22 06:13:47,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-22 06:13:47,289 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-22 06:13:47,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:13:47,290 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-22 06:13:47,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 06:13:47,290 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-22 06:13:47,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 06:13:47,291 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:13:47,292 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] [2020-08-22 06:13:47,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 06:13:47,292 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:13:47,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:13:47,293 INFO L82 PathProgramCache]: Analyzing trace with hash 744784661, now seen corresponding path program 1 times [2020-08-22 06:13:47,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:13:47,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611828273] [2020-08-22 06:13:47,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:13:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 06:13:47,346 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 06:13:47,347 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 06:13:47,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 06:13:47,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:13:47 BoogieIcfgContainer [2020-08-22 06:13:47,372 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 06:13:47,375 INFO L168 Benchmark]: Toolchain (without parser) took 1810.87 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 102.5 MB in the beginning and 108.5 MB in the end (delta: -6.0 MB). Peak memory consumption was 57.9 MB. Max. memory is 7.1 GB. [2020-08-22 06:13:47,376 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 06:13:47,377 INFO L168 Benchmark]: CACSL2BoogieTranslator took 502.07 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 102.3 MB in the beginning and 180.8 MB in the end (delta: -78.5 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-08-22 06:13:47,378 INFO L168 Benchmark]: Boogie Preprocessor took 70.76 ms. Allocated memory is still 203.9 MB. Free memory was 180.8 MB in the beginning and 178.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-22 06:13:47,381 INFO L168 Benchmark]: RCFGBuilder took 446.16 ms. Allocated memory is still 203.9 MB. Free memory was 178.4 MB in the beginning and 156.9 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-08-22 06:13:47,382 INFO L168 Benchmark]: TraceAbstraction took 786.81 ms. Allocated memory is still 203.9 MB. Free memory was 156.2 MB in the beginning and 108.5 MB in the end (delta: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 7.1 GB. [2020-08-22 06:13:47,388 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 502.07 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 102.3 MB in the beginning and 180.8 MB in the end (delta: -78.5 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.76 ms. Allocated memory is still 203.9 MB. Free memory was 180.8 MB in the beginning and 178.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 446.16 ms. Allocated memory is still 203.9 MB. Free memory was 178.4 MB in the beginning and 156.9 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 786.81 ms. Allocated memory is still 203.9 MB. Free memory was 156.2 MB in the beginning and 108.5 MB in the end (delta: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 93]: 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 someBinaryArithmeticDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 80. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L88] double x = 0.0 / 0.0; [L89] 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; [L89] RET, EXPR floor_double(x) [L89] double res = floor_double(x); [L92] CALL, EXPR isnan_double(res) [L80] return x != x; [L92] RET, EXPR isnan_double(res) [L92] COND TRUE !isnan_double(res) [L93] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 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: 56 SDtfs, 52 SDslu, 5 SDs, 0 SdLazy, 58 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1012 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...