/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_1092a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:45:46,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:45:46,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:45:46,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:45:46,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:45:46,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:45:46,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:45:46,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:45:46,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:45:46,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:45:46,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:45:46,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:45:46,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:45:46,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:45:46,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:45:46,951 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:45:46,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:45:46,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:45:46,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:45:46,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:45:46,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:45:46,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:45:46,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:45:46,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:45:46,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:45:46,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:45:46,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:45:46,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:45:46,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:45:46,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:45:46,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:45:46,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:45:46,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:45:46,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:45:46,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:45:46,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:45:46,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:45:46,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:45:46,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:45:46,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:45:46,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:45:46,986 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 06:45:47,037 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:45:47,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:45:47,038 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:45:47,039 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:45:47,039 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:45:47,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:45:47,039 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:45:47,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:45:47,040 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:45:47,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:45:47,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:45:47,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:45:47,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:45:47,041 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:45:47,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:45:47,043 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:45:47,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:45:47,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:45:47,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:45:47,044 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:45:47,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:45:47,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:45:47,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:45:47,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:45:47,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:45:47,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:45:47,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:45:47,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:45:47,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:45:47,045 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 06:45:47,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:45:47,343 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:45:47,348 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:45:47,350 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:45:47,350 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:45:47,355 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-19 06:45:47,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac4c63476/ac9eeffa96094490b42a3b6bc1002234/FLAG492f85e56 [2020-08-19 06:45:47,858 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:45:47,859 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-19 06:45:47,868 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac4c63476/ac9eeffa96094490b42a3b6bc1002234/FLAG492f85e56 [2020-08-19 06:45:48,244 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac4c63476/ac9eeffa96094490b42a3b6bc1002234 [2020-08-19 06:45:48,254 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:45:48,256 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:45:48,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:45:48,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:45:48,262 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:45:48,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:45:48" (1/1) ... [2020-08-19 06:45:48,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b6670e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:45:48, skipping insertion in model container [2020-08-19 06:45:48,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:45:48" (1/1) ... [2020-08-19 06:45:48,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:45:48,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:45:48,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:45:48,499 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:45:48,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:45:48,658 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:45:48,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:45:48 WrapperNode [2020-08-19 06:45:48,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:45:48,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:45:48,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:45:48,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:45:48,675 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 06:45:48,676 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 06:45:48,686 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 06:45:48,687 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 06:45:48,700 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 06:45:48,706 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 06:45:48,709 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 06:45:48,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:45:48,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:45:48,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:45:48,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:45:48,718 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 06:45:48,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:45:48,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:45:48,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-19 06:45:48,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-19 06:45:48,809 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:45:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:45:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-19 06:45:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-19 06:45:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 06:45:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 06:45:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 06:45:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 06:45:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 06:45:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 06:45:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:45:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:45:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:45:49,203 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:45:49,204 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-19 06:45:49,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:45:49 BoogieIcfgContainer [2020-08-19 06:45:49,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:45:49,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:45:49,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:45:49,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:45:49,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:45:48" (1/3) ... [2020-08-19 06:45:49,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57edad08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:45:49, skipping insertion in model container [2020-08-19 06:45:49,215 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 06:45:49,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57edad08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:45:49, skipping insertion in model container [2020-08-19 06:45:49,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:45:49" (3/3) ... [2020-08-19 06:45:49,218 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092a.c [2020-08-19 06:45:49,229 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:45:49,237 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:45:49,248 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:45:49,274 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:45:49,275 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:45:49,275 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:45:49,275 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:45:49,275 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:45:49,275 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:45:49,275 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:45:49,276 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:45:49,294 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-08-19 06:45:49,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 06:45:49,301 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:45:49,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:45:49,302 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:45:49,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:45:49,307 INFO L82 PathProgramCache]: Analyzing trace with hash -321966810, now seen corresponding path program 1 times [2020-08-19 06:45:49,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:45:49,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255678539] [2020-08-19 06:45:49,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:45:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:45:49,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:45:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:45:49,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:45:49,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:45:49,549 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 06:45:49,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255678539] [2020-08-19 06:45:49,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:45:49,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:45:49,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85568844] [2020-08-19 06:45:49,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:45:49,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:45:49,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:45:49,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:45:49,572 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-08-19 06:45:49,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:45:49,877 INFO L93 Difference]: Finished difference Result 76 states and 114 transitions. [2020-08-19 06:45:49,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 06:45:49,879 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-08-19 06:45:49,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:45:49,898 INFO L225 Difference]: With dead ends: 76 [2020-08-19 06:45:49,898 INFO L226 Difference]: Without dead ends: 38 [2020-08-19 06:45:49,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:45:49,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-19 06:45:49,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-19 06:45:49,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-19 06:45:49,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-08-19 06:45:49,949 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 18 [2020-08-19 06:45:49,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:45:49,950 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-08-19 06:45:49,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:45:49,950 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2020-08-19 06:45:49,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 06:45:49,951 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:45:49,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:45:49,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:45:49,952 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:45:49,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:45:49,953 INFO L82 PathProgramCache]: Analyzing trace with hash 422703747, now seen corresponding path program 1 times [2020-08-19 06:45:49,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:45:49,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508457702] [2020-08-19 06:45:49,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:45:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 06:45:50,016 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 06:45:50,016 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 06:45:50,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:45:50,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 06:45:50 BoogieIcfgContainer [2020-08-19 06:45:50,036 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 06:45:50,039 INFO L168 Benchmark]: Toolchain (without parser) took 1782.71 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 111.9 MB in the end (delta: -9.3 MB). Peak memory consumption was 54.6 MB. Max. memory is 7.1 GB. [2020-08-19 06:45:50,040 INFO L168 Benchmark]: CDTParser took 0.36 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: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 06:45:50,041 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.62 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 181.9 MB in the end (delta: -79.6 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-08-19 06:45:50,042 INFO L168 Benchmark]: Boogie Preprocessor took 51.13 ms. Allocated memory is still 203.9 MB. Free memory was 181.9 MB in the beginning and 179.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-19 06:45:50,043 INFO L168 Benchmark]: RCFGBuilder took 496.71 ms. Allocated memory is still 203.9 MB. Free memory was 179.9 MB in the beginning and 157.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-08-19 06:45:50,044 INFO L168 Benchmark]: TraceAbstraction took 826.22 ms. Allocated memory is still 203.9 MB. Free memory was 157.2 MB in the beginning and 111.9 MB in the end (delta: 45.4 MB). Peak memory consumption was 45.4 MB. Max. memory is 7.1 GB. [2020-08-19 06:45:50,048 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 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: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 403.62 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 181.9 MB in the end (delta: -79.6 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.13 ms. Allocated memory is still 203.9 MB. Free memory was 181.9 MB in the beginning and 179.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 496.71 ms. Allocated memory is still 203.9 MB. Free memory was 179.9 MB in the beginning and 157.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 826.22 ms. Allocated memory is still 203.9 MB. Free memory was 157.2 MB in the beginning and 111.9 MB in the end (delta: 45.4 MB). Peak memory consumption was 45.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 96]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 41, overapproximation of bitwiseOr at line 42, overapproximation of someUnaryDOUBLEoperation at line 91, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 95. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; [L91] double x = -0.0; [L92] CALL, EXPR ceil_double(x) [L20] __int32_t i0, i1, j0; [L21] __uint32_t i, j; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L29] COND TRUE j0 < 20 [L30] COND FALSE !(j0 < 0) [L41] i = (0x000fffff) >> j0 [L42] COND TRUE ((i0 & i) | i1) == 0 [L43] return x; [L92] RET, EXPR ceil_double(x) [L92] double res = ceil_double(x); [L95] COND TRUE res != x [L96] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 47 SDslu, 5 SDs, 0 SdLazy, 55 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 697 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...