/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=0.2 --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 [2020-08-21 22:56:10,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:56:10,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:56:10,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:56:10,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:56:10,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:56:10,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:56:10,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:56:10,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:56:10,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:56:10,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:56:10,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:56:10,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:56:10,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:56:10,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:56:10,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:56:10,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:56:10,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:56:10,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:56:10,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:56:10,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:56:10,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:56:10,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:56:10,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:56:10,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:56:10,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:56:10,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:56:10,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:56:10,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:56:10,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:56:10,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:56:10,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:56:10,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:56:10,370 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:56:10,371 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:56:10,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:56:10,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:56:10,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:56:10,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:56:10,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:56:10,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:56:10,375 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 22:56:10,404 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:56:10,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:56:10,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:56:10,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:56:10,406 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:56:10,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:56:10,412 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:56:10,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:56:10,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:56:10,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:56:10,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:56:10,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:56:10,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:56:10,413 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:56:10,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:56:10,414 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:56:10,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:56:10,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:56:10,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:56:10,414 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:56:10,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:56:10,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:56:10,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:56:10,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:56:10,418 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:56:10,418 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:56:10,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:56:10,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:56:10,418 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:56:10,418 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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-08-21 22:56:10,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:56:10,772 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:56:10,775 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:56:10,776 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:56:10,776 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:56:10,777 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-08-21 22:56:10,837 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00e6018b2/020481e06a9e4d79ad13d91941267f8c/FLAG16b6c4950 [2020-08-21 22:56:11,328 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:56:11,328 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-08-21 22:56:11,335 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00e6018b2/020481e06a9e4d79ad13d91941267f8c/FLAG16b6c4950 [2020-08-21 22:56:11,739 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00e6018b2/020481e06a9e4d79ad13d91941267f8c [2020-08-21 22:56:11,748 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:56:11,749 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:56:11,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:56:11,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:56:11,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:56:11,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:56:11" (1/1) ... [2020-08-21 22:56:11,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a91d473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:11, skipping insertion in model container [2020-08-21 22:56:11,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:56:11" (1/1) ... [2020-08-21 22:56:11,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:56:11,787 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:56:11,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:56:11,984 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:56:12,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:56:12,127 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:56:12,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:12 WrapperNode [2020-08-21 22:56:12,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:56:12,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:56:12,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:56:12,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:56:12,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:12" (1/1) ... [2020-08-21 22:56:12,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:12" (1/1) ... [2020-08-21 22:56:12,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:12" (1/1) ... [2020-08-21 22:56:12,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:12" (1/1) ... [2020-08-21 22:56:12,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:12" (1/1) ... [2020-08-21 22:56:12,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:12" (1/1) ... [2020-08-21 22:56:12,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:12" (1/1) ... [2020-08-21 22:56:12,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:56:12,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:56:12,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:56:12,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:56:12,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:12" (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 22:56:12,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:56:12,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:56:12,236 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-21 22:56:12,236 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 22:56:12,237 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:56:12,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:56:12,238 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-21 22:56:12,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:56:12,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 22:56:12,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:56:12,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:56:12,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:56:12,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 22:56:12,240 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 22:56:12,240 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:56:12,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:56:12,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:56:12,589 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:56:12,589 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 22:56:12,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:56:12 BoogieIcfgContainer [2020-08-21 22:56:12,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:56:12,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:56:12,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:56:12,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:56:12,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:56:11" (1/3) ... [2020-08-21 22:56:12,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0a767d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:56:12, skipping insertion in model container [2020-08-21 22:56:12,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:56:12" (2/3) ... [2020-08-21 22:56:12,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0a767d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:56:12, skipping insertion in model container [2020-08-21 22:56:12,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:56:12" (3/3) ... [2020-08-21 22:56:12,604 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2020-08-21 22:56:12,617 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:56:12,624 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:56:12,642 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:56:12,676 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:56:12,676 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:56:12,676 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:56:12,677 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:56:12,677 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:56:12,677 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:56:12,677 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:56:12,677 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:56:12,700 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-21 22:56:12,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-21 22:56:12,707 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:56:12,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:56:12,709 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:56:12,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:56:12,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1635654302, now seen corresponding path program 1 times [2020-08-21 22:56:12,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:56:12,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643742960] [2020-08-21 22:56:12,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:56:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:56:12,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:56:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:56:12,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:56:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:56:12,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:56:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:56:12,956 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 22:56:12,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643742960] [2020-08-21 22:56:12,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:56:12,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:56:12,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053509730] [2020-08-21 22:56:12,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:56:12,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:56:12,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:56:12,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:56:12,983 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-21 22:56:13,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:56:13,211 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-21 22:56:13,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 22:56:13,213 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-21 22:56:13,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:56:13,226 INFO L225 Difference]: With dead ends: 86 [2020-08-21 22:56:13,226 INFO L226 Difference]: Without dead ends: 43 [2020-08-21 22:56:13,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 22:56:13,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-21 22:56:13,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-21 22:56:13,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-21 22:56:13,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-21 22:56:13,276 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-21 22:56:13,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:56:13,277 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-21 22:56:13,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:56:13,277 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-21 22:56:13,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-21 22:56:13,278 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:56:13,279 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] [2020-08-21 22:56:13,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:56:13,279 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:56:13,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:56:13,280 INFO L82 PathProgramCache]: Analyzing trace with hash 744784661, now seen corresponding path program 1 times [2020-08-21 22:56:13,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:56:13,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223315412] [2020-08-21 22:56:13,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:56:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 22:56:13,335 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 22:56:13,335 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 22:56:13,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:56:13,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:56:13 BoogieIcfgContainer [2020-08-21 22:56:13,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:56:13,359 INFO L168 Benchmark]: Toolchain (without parser) took 1608.50 ms. Allocated memory was 141.0 MB in the beginning and 202.4 MB in the end (delta: 61.3 MB). Free memory was 103.6 MB in the beginning and 107.5 MB in the end (delta: -4.0 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB. [2020-08-21 22:56:13,360 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 22:56:13,361 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.00 ms. Allocated memory was 141.0 MB in the beginning and 202.4 MB in the end (delta: 61.3 MB). Free memory was 103.1 MB in the beginning and 180.3 MB in the end (delta: -77.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-08-21 22:56:13,362 INFO L168 Benchmark]: Boogie Preprocessor took 50.62 ms. Allocated memory is still 202.4 MB. Free memory was 180.3 MB in the beginning and 178.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-08-21 22:56:13,363 INFO L168 Benchmark]: RCFGBuilder took 415.26 ms. Allocated memory is still 202.4 MB. Free memory was 178.4 MB in the beginning and 156.0 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-08-21 22:56:13,364 INFO L168 Benchmark]: TraceAbstraction took 760.09 ms. Allocated memory is still 202.4 MB. Free memory was 155.4 MB in the beginning and 107.5 MB in the end (delta: 47.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 7.1 GB. [2020-08-21 22:56:13,371 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 378.00 ms. Allocated memory was 141.0 MB in the beginning and 202.4 MB in the end (delta: 61.3 MB). Free memory was 103.1 MB in the beginning and 180.3 MB in the end (delta: -77.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.62 ms. Allocated memory is still 202.4 MB. Free memory was 180.3 MB in the beginning and 178.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 415.26 ms. Allocated memory is still 202.4 MB. Free memory was 178.4 MB in the beginning and 156.0 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 760.09 ms. Allocated memory is still 202.4 MB. Free memory was 155.4 MB in the beginning and 107.5 MB in the end (delta: 47.8 MB). Peak memory consumption was 47.8 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: 0.6s, 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, 0.0s 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...