/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=BIGGEST -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 0.1.25-5644d1e-m [2020-08-18 17:50:15,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:50:15,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:50:15,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:50:15,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:50:15,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:50:15,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:50:15,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:50:15,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:50:15,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:50:15,874 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:50:15,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:50:15,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:50:15,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:50:15,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:50:15,884 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:50:15,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:50:15,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:50:15,888 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:50:15,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:50:15,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:50:15,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:50:15,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:50:15,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:50:15,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 17:50:15,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 17:50:15,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 17:50:15,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 17:50:15,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 17:50:15,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 17:50:15,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 17:50:15,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 17:50:15,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 17:50:15,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 17:50:15,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 17:50:15,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 17:50:15,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 17:50:15,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 17:50:15,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:50:15,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:50:15,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:50:15,928 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 [2020-08-18 17:50:15,968 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:50:15,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:50:15,971 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:50:15,971 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:50:15,972 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:50:15,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:50:15,972 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:50:15,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:50:15,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:50:15,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:50:15,974 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:50:15,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:50:15,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:50:15,975 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:50:15,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:50:15,975 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:50:15,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:50:15,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:50:15,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:50:15,976 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:50:15,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:50:15,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:50:15,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:50:15,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:50:15,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:50:15,977 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:50:15,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:50:15,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:50:15,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:50:15,978 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=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 17:50:16,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:50:16,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:50:16,275 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:50:16,276 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:50:16,276 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:50:16,277 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-08-18 17:50:16,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ca64e127/c40f7305a4c44323b276774215fbf7ef/FLAG120a4ca9b [2020-08-18 17:50:16,805 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:50:16,807 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-08-18 17:50:16,814 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ca64e127/c40f7305a4c44323b276774215fbf7ef/FLAG120a4ca9b [2020-08-18 17:50:17,176 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ca64e127/c40f7305a4c44323b276774215fbf7ef [2020-08-18 17:50:17,185 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:50:17,187 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:50:17,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:50:17,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:50:17,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:50:17,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:50:17" (1/1) ... [2020-08-18 17:50:17,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@201d7596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:17, skipping insertion in model container [2020-08-18 17:50:17,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:50:17" (1/1) ... [2020-08-18 17:50:17,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:50:17,226 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:50:17,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:50:17,420 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:50:17,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:50:17,576 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:50:17,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:17 WrapperNode [2020-08-18 17:50:17,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:50:17,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:50:17,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:50:17,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:50:17,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:17" (1/1) ... [2020-08-18 17:50:17,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:17" (1/1) ... [2020-08-18 17:50:17,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:17" (1/1) ... [2020-08-18 17:50:17,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:17" (1/1) ... [2020-08-18 17:50:17,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:17" (1/1) ... [2020-08-18 17:50:17,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:17" (1/1) ... [2020-08-18 17:50:17,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:17" (1/1) ... [2020-08-18 17:50:17,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:50:17,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:50:17,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:50:17,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:50:17,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:17" (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 [2020-08-18 17:50:17,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:50:17,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:50:17,691 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-18 17:50:17,691 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-18 17:50:17,691 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:50:17,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:50:17,691 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-18 17:50:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 17:50:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 17:50:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 17:50:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 17:50:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 17:50:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 17:50:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-18 17:50:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:50:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:50:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:50:18,086 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:50:18,087 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 17:50:18,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:50:18 BoogieIcfgContainer [2020-08-18 17:50:18,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:50:18,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:50:18,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:50:18,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:50:18,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:50:17" (1/3) ... [2020-08-18 17:50:18,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78885f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:50:18, skipping insertion in model container [2020-08-18 17:50:18,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:50:17" (2/3) ... [2020-08-18 17:50:18,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78885f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:50:18, skipping insertion in model container [2020-08-18 17:50:18,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:50:18" (3/3) ... [2020-08-18 17:50:18,100 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2020-08-18 17:50:18,110 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:50:18,117 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:50:18,131 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:50:18,154 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:50:18,154 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:50:18,154 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:50:18,154 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:50:18,154 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:50:18,154 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:50:18,154 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:50:18,154 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:50:18,172 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-18 17:50:18,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-18 17:50:18,180 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:50:18,181 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] [2020-08-18 17:50:18,181 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:50:18,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:50:18,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1635654302, now seen corresponding path program 1 times [2020-08-18 17:50:18,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:50:18,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612816640] [2020-08-18 17:50:18,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:50:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:50:18,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:50:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:50:18,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:50:18,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:50:18,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:50:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:50:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:50:18,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612816640] [2020-08-18 17:50:18,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:50:18,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:50:18,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314518732] [2020-08-18 17:50:18,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:50:18,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:50:18,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:50:18,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:50:18,505 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-18 17:50:18,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:50:18,799 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-18 17:50:18,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 17:50:18,801 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-18 17:50:18,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:50:18,812 INFO L225 Difference]: With dead ends: 86 [2020-08-18 17:50:18,813 INFO L226 Difference]: Without dead ends: 43 [2020-08-18 17:50:18,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:50:18,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-18 17:50:18,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-18 17:50:18,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-18 17:50:18,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-18 17:50:18,862 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-18 17:50:18,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:50:18,863 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-18 17:50:18,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:50:18,863 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-18 17:50:18,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 17:50:18,865 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:50:18,865 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] [2020-08-18 17:50:18,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:50:18,865 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:50:18,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:50:18,866 INFO L82 PathProgramCache]: Analyzing trace with hash 744784661, now seen corresponding path program 1 times [2020-08-18 17:50:18,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:50:18,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666056147] [2020-08-18 17:50:18,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:50:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 17:50:18,922 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 17:50:18,922 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 17:50:18,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 17:50:18,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 05:50:18 BoogieIcfgContainer [2020-08-18 17:50:18,947 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 17:50:18,950 INFO L168 Benchmark]: Toolchain (without parser) took 1762.32 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.9 MB in the beginning and 108.9 MB in the end (delta: -6.0 MB). Peak memory consumption was 56.9 MB. Max. memory is 7.1 GB. [2020-08-18 17:50:18,951 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 17:50:18,952 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.89 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.7 MB in the beginning and 181.7 MB in the end (delta: -79.0 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-08-18 17:50:18,953 INFO L168 Benchmark]: Boogie Preprocessor took 50.18 ms. Allocated memory is still 203.4 MB. Free memory was 181.7 MB in the beginning and 179.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-18 17:50:18,954 INFO L168 Benchmark]: RCFGBuilder took 462.32 ms. Allocated memory is still 203.4 MB. Free memory was 179.4 MB in the beginning and 157.0 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-08-18 17:50:18,955 INFO L168 Benchmark]: TraceAbstraction took 854.01 ms. Allocated memory is still 203.4 MB. Free memory was 156.4 MB in the beginning and 108.9 MB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. [2020-08-18 17:50:18,960 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 390.89 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.7 MB in the beginning and 181.7 MB in the end (delta: -79.0 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.18 ms. Allocated memory is still 203.4 MB. Free memory was 181.7 MB in the beginning and 179.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 462.32 ms. Allocated memory is still 203.4 MB. Free memory was 179.4 MB in the beginning and 157.0 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 854.01 ms. Allocated memory is still 203.4 MB. Free memory was 156.4 MB in the beginning and 108.9 MB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 93]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 37, overapproximation of bitwiseOr at line 38, overapproximation of someBinaryArithmeticDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 80. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L88] double x = 0.0 / 0.0; [L89] CALL, EXPR floor_double(x) [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L26] COND TRUE j0 < 20 [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; [L89] RET, EXPR floor_double(x) [L89] double res = floor_double(x); [L92] CALL, EXPR isnan_double(res) [L80] return x != x; [L92] RET, EXPR isnan_double(res) [L92] COND TRUE !isnan_double(res) [L93] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1012 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...