/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 23:28:46,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 23:28:46,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 23:28:46,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 23:28:46,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 23:28:46,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 23:28:46,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 23:28:46,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 23:28:46,509 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 23:28:46,511 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 23:28:46,512 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 23:28:46,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 23:28:46,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 23:28:46,519 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 23:28:46,520 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 23:28:46,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 23:28:46,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 23:28:46,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 23:28:46,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 23:28:46,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 23:28:46,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 23:28:46,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 23:28:46,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 23:28:46,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 23:28:46,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 23:28:46,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 23:28:46,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 23:28:46,551 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 23:28:46,551 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 23:28:46,552 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 23:28:46,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 23:28:46,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 23:28:46,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 23:28:46,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 23:28:46,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 23:28:46,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 23:28:46,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 23:28:46,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 23:28:46,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 23:28:46,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 23:28:46,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 23:28:46,560 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 23:28:46,588 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 23:28:46,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 23:28:46,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 23:28:46,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 23:28:46,590 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 23:28:46,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 23:28:46,590 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 23:28:46,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 23:28:46,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 23:28:46,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 23:28:46,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 23:28:46,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 23:28:46,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 23:28:46,592 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 23:28:46,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 23:28:46,592 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 23:28:46,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 23:28:46,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 23:28:46,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 23:28:46,593 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 23:28:46,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 23:28:46,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:28:46,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 23:28:46,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 23:28:46,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 23:28:46,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 23:28:46,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 23:28:46,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 23:28:46,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 23:28:46,595 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=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; [2020-08-18 23:28:46,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 23:28:46,944 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 23:28:46,948 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 23:28:46,950 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 23:28:46,951 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 23:28:46,951 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-18 23:28:47,034 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed2f35e89/c9e709e98d30448e97518d0c6aeafb96/FLAG66572e25f [2020-08-18 23:28:47,537 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 23:28:47,538 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-18 23:28:47,548 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed2f35e89/c9e709e98d30448e97518d0c6aeafb96/FLAG66572e25f [2020-08-18 23:28:47,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed2f35e89/c9e709e98d30448e97518d0c6aeafb96 [2020-08-18 23:28:47,914 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 23:28:47,916 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 23:28:47,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 23:28:47,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 23:28:47,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 23:28:47,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:28:47" (1/1) ... [2020-08-18 23:28:47,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a39a0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:47, skipping insertion in model container [2020-08-18 23:28:47,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:28:47" (1/1) ... [2020-08-18 23:28:47,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 23:28:47,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 23:28:48,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:28:48,159 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 23:28:48,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:28:48,294 INFO L208 MainTranslator]: Completed translation [2020-08-18 23:28:48,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:48 WrapperNode [2020-08-18 23:28:48,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 23:28:48,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 23:28:48,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 23:28:48,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 23:28:48,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:48" (1/1) ... [2020-08-18 23:28:48,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:48" (1/1) ... [2020-08-18 23:28:48,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:48" (1/1) ... [2020-08-18 23:28:48,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:48" (1/1) ... [2020-08-18 23:28:48,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:48" (1/1) ... [2020-08-18 23:28:48,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:48" (1/1) ... [2020-08-18 23:28:48,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:48" (1/1) ... [2020-08-18 23:28:48,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 23:28:48,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 23:28:48,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 23:28:48,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 23:28:48,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:48" (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 [2020-08-18 23:28:48,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 23:28:48,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 23:28:48,409 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-18 23:28:48,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-18 23:28:48,409 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 23:28:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 23:28:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-18 23:28:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 23:28:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 23:28:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 23:28:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 23:28:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 23:28:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 23:28:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-18 23:28:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 23:28:48,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 23:28:48,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 23:28:48,775 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 23:28:48,775 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-18 23:28:48,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:28:48 BoogieIcfgContainer [2020-08-18 23:28:48,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 23:28:48,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 23:28:48,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 23:28:48,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 23:28:48,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:28:47" (1/3) ... [2020-08-18 23:28:48,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493bb44a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:28:48, skipping insertion in model container [2020-08-18 23:28:48,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:28:48" (2/3) ... [2020-08-18 23:28:48,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493bb44a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:28:48, skipping insertion in model container [2020-08-18 23:28:48,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:28:48" (3/3) ... [2020-08-18 23:28:48,789 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-08-18 23:28:48,801 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 23:28:48,813 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 23:28:48,832 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 23:28:48,859 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 23:28:48,859 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 23:28:48,859 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 23:28:48,859 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 23:28:48,860 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 23:28:48,860 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 23:28:48,860 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 23:28:48,860 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 23:28:48,882 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-08-18 23:28:48,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 23:28:48,889 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:28:48,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:28:48,890 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:28:48,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:28:48,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1202696015, now seen corresponding path program 1 times [2020-08-18 23:28:48,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:28:48,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281209984] [2020-08-18 23:28:48,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:28:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:28:49,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:28:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:28:49,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:28:49,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:28:49,134 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 23:28:49,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281209984] [2020-08-18 23:28:49,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:28:49,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 23:28:49,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390168413] [2020-08-18 23:28:49,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 23:28:49,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:28:49,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 23:28:49,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:28:49,163 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-08-18 23:28:49,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:28:49,415 INFO L93 Difference]: Finished difference Result 94 states and 139 transitions. [2020-08-18 23:28:49,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 23:28:49,417 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-18 23:28:49,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:28:49,427 INFO L225 Difference]: With dead ends: 94 [2020-08-18 23:28:49,428 INFO L226 Difference]: Without dead ends: 47 [2020-08-18 23:28:49,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:28:49,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-08-18 23:28:49,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-08-18 23:28:49,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-18 23:28:49,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-08-18 23:28:49,479 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-08-18 23:28:49,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:28:49,479 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-08-18 23:28:49,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 23:28:49,480 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-08-18 23:28:49,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 23:28:49,481 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:28:49,481 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] [2020-08-18 23:28:49,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 23:28:49,482 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:28:49,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:28:49,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1688222156, now seen corresponding path program 1 times [2020-08-18 23:28:49,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:28:49,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053386173] [2020-08-18 23:28:49,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:28:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 23:28:49,536 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 23:28:49,536 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 23:28:49,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 23:28:49,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:28:49 BoogieIcfgContainer [2020-08-18 23:28:49,562 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 23:28:49,565 INFO L168 Benchmark]: Toolchain (without parser) took 1648.08 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 101.5 MB in the beginning and 105.0 MB in the end (delta: -3.5 MB). Peak memory consumption was 59.4 MB. Max. memory is 7.1 GB. [2020-08-18 23:28:49,566 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-18 23:28:49,567 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.31 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 101.3 MB in the beginning and 180.0 MB in the end (delta: -78.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-08-18 23:28:49,568 INFO L168 Benchmark]: Boogie Preprocessor took 48.05 ms. Allocated memory is still 201.9 MB. Free memory was 180.0 MB in the beginning and 177.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-08-18 23:28:49,569 INFO L168 Benchmark]: RCFGBuilder took 435.96 ms. Allocated memory is still 201.9 MB. Free memory was 177.6 MB in the beginning and 154.1 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-08-18 23:28:49,570 INFO L168 Benchmark]: TraceAbstraction took 780.01 ms. Allocated memory is still 201.9 MB. Free memory was 153.4 MB in the beginning and 105.0 MB in the end (delta: 48.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. [2020-08-18 23:28:49,574 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 379.31 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 101.3 MB in the beginning and 180.0 MB in the end (delta: -78.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.05 ms. Allocated memory is still 201.9 MB. Free memory was 180.0 MB in the beginning and 177.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 435.96 ms. Allocated memory is still 201.9 MB. Free memory was 177.6 MB in the beginning and 154.1 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 780.01 ms. Allocated memory is still 201.9 MB. Free memory was 153.4 MB in the beginning and 105.0 MB in the end (delta: 48.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 103]: 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 someUnaryDOUBLEoperation at line 98, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 102. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L98] double x = -0.0; [L99] 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; [L99] RET, EXPR floor_double(x) [L99] double res = floor_double(x); [L102] EXPR res == -0.0 && __signbit_double(res) == 1 [L102] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L103] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 55 SDslu, 5 SDs, 0 SdLazy, 65 SolverSat, 11 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 756 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...