/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:45:46,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:45:46,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:45:46,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:45:46,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:45:46,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:45:46,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:45:46,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:45:46,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:45:46,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:45:46,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:45:46,657 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:45:46,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:45:46,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:45:46,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:45:46,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:45:46,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:45:46,663 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:45:46,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:45:46,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:45:46,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:45:46,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:45:46,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:45:46,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:45:46,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:45:46,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:45:46,679 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:45:46,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:45:46,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:45:46,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:45:46,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:45:46,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:45:46,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:45:46,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:45:46,685 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:45:46,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:45:46,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:45:46,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:45:46,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:45:46,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:45:46,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:45:46,689 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 [2020-08-19 06:45:46,712 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:45:46,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:45:46,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:45:46,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:45:46,714 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:45:46,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:45:46,714 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:45:46,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:45:46,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:45:46,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:45:46,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:45:46,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:45:46,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:45:46,716 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:45:46,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:45:46,716 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:45:46,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:45:46,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:45:46,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:45:46,717 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:45:46,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:45:46,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:45:46,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:45:46,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:45:46,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:45:46,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:45:46,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:45:46,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:45:46,718 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:45:46,719 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=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; [2020-08-19 06:45:47,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:45:47,032 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:45:47,036 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:45:47,037 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:45:47,038 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:45:47,039 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-19 06:45:47,104 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81aafd80c/cf342d1f949a40d298f0b5295069fca1/FLAGaa08dcb42 [2020-08-19 06:45:47,565 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:45:47,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-19 06:45:47,573 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81aafd80c/cf342d1f949a40d298f0b5295069fca1/FLAGaa08dcb42 [2020-08-19 06:45:47,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81aafd80c/cf342d1f949a40d298f0b5295069fca1 [2020-08-19 06:45:47,960 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:45:47,962 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:45:47,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:45:47,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:45:47,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:45:47,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:45:47" (1/1) ... [2020-08-19 06:45:47,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a56f015 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:45:47, skipping insertion in model container [2020-08-19 06:45:47,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:45:47" (1/1) ... [2020-08-19 06:45:47,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:45:47,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:45:48,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:45:48,187 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:45:48,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:45:48,247 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:45:48,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:45:48 WrapperNode [2020-08-19 06:45:48,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:45:48,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:45:48,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:45:48,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:45:48,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:45:48" (1/1) ... [2020-08-19 06:45:48,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:45:48" (1/1) ... [2020-08-19 06:45:48,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:45:48" (1/1) ... [2020-08-19 06:45:48,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:45:48" (1/1) ... [2020-08-19 06:45:48,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:45:48" (1/1) ... [2020-08-19 06:45:48,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:45:48" (1/1) ... [2020-08-19 06:45:48,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:45:48" (1/1) ... [2020-08-19 06:45:48,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:45:48,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:45:48,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:45:48,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:45:48,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:45:48" (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 [2020-08-19 06:45:48,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:45:48,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:45:48,468 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-19 06:45:48,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-19 06:45:48,468 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:45:48,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:45:48,469 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-19 06:45:48,469 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-19 06:45:48,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 06:45:48,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 06:45:48,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 06:45:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 06:45:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 06:45:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 06:45:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:45:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:45:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:45:48,900 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:45:48,901 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-19 06:45:48,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:45:48 BoogieIcfgContainer [2020-08-19 06:45:48,905 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:45:48,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:45:48,906 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:45:48,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:45:48,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:45:47" (1/3) ... [2020-08-19 06:45:48,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584152b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:45:48, skipping insertion in model container [2020-08-19 06:45:48,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:45:48" (2/3) ... [2020-08-19 06:45:48,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584152b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:45:48, skipping insertion in model container [2020-08-19 06:45:48,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:45:48" (3/3) ... [2020-08-19 06:45:48,913 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091.c [2020-08-19 06:45:48,925 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:45:48,932 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:45:48,944 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:45:48,966 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:45:48,966 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:45:48,966 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:45:48,967 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:45:48,967 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:45:48,967 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:45:48,967 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:45:48,967 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:45:48,985 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-19 06:45:48,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-19 06:45:48,992 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:45:48,993 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] [2020-08-19 06:45:48,994 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:45:48,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:45:48,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1881433434, now seen corresponding path program 1 times [2020-08-19 06:45:49,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:45:49,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375782382] [2020-08-19 06:45:49,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:45:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:45:49,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:45:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:45:49,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:45:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:45:49,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:45:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:45:49,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:45:49,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375782382] [2020-08-19 06:45:49,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:45:49,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:45:49,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640824400] [2020-08-19 06:45:49,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:45:49,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:45:49,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:45:49,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:45:49,295 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-19 06:45:49,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:45:49,552 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-19 06:45:49,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 06:45:49,554 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-19 06:45:49,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:45:49,567 INFO L225 Difference]: With dead ends: 86 [2020-08-19 06:45:49,567 INFO L226 Difference]: Without dead ends: 43 [2020-08-19 06:45:49,571 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 [2020-08-19 06:45:49,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-19 06:45:49,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-19 06:45:49,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-19 06:45:49,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-19 06:45:49,618 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-19 06:45:49,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:45:49,619 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-19 06:45:49,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:45:49,619 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-19 06:45:49,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-19 06:45:49,621 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:45:49,621 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] [2020-08-19 06:45:49,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:45:49,622 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:45:49,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:45:49,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1135906069, now seen corresponding path program 1 times [2020-08-19 06:45:49,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:45:49,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9277337] [2020-08-19 06:45:49,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:45:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 06:45:49,679 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 06:45:49,679 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 06:45:49,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:45:49,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 06:45:49 BoogieIcfgContainer [2020-08-19 06:45:49,704 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 06:45:49,707 INFO L168 Benchmark]: Toolchain (without parser) took 1744.10 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.5 MB in the beginning and 108.9 MB in the end (delta: -6.4 MB). Peak memory consumption was 56.5 MB. Max. memory is 7.1 GB. [2020-08-19 06:45:49,708 INFO L168 Benchmark]: CDTParser took 0.21 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: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 06:45:49,709 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.79 ms. Allocated memory is still 140.0 MB. Free memory was 102.3 MB in the beginning and 90.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-08-19 06:45:49,710 INFO L168 Benchmark]: Boogie Preprocessor took 156.63 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 90.8 MB in the beginning and 180.0 MB in the end (delta: -89.2 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-19 06:45:49,711 INFO L168 Benchmark]: RCFGBuilder took 498.83 ms. Allocated memory is still 202.9 MB. Free memory was 180.0 MB in the beginning and 157.2 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-08-19 06:45:49,712 INFO L168 Benchmark]: TraceAbstraction took 797.96 ms. Allocated memory is still 202.9 MB. Free memory was 156.5 MB in the beginning and 108.9 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. [2020-08-19 06:45:49,716 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 285.79 ms. Allocated memory is still 140.0 MB. Free memory was 102.3 MB in the beginning and 90.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 156.63 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 90.8 MB in the beginning and 180.0 MB in the end (delta: -89.2 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 498.83 ms. Allocated memory is still 202.9 MB. Free memory was 180.0 MB in the beginning and 157.2 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 797.96 ms. Allocated memory is still 202.9 MB. Free memory was 156.5 MB in the beginning and 108.9 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 95]: 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 someBinaryArithmeticDOUBLEoperation at line 90, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 15. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; [L90] double x = 0.0 / 0.0; [L91] 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; [L91] RET, EXPR ceil_double(x) [L91] double res = ceil_double(x); [L94] CALL, EXPR isnan_double(res) [L15] return x != x; [L94] RET, EXPR isnan_double(res) [L94] COND TRUE !isnan_double(res) [L95] __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: 0.3s, 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...