/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 19:42:23,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 19:42:23,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 19:42:23,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 19:42:23,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 19:42:23,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 19:42:23,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 19:42:23,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 19:42:23,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 19:42:23,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 19:42:23,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 19:42:23,661 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 19:42:23,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 19:42:23,662 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 19:42:23,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 19:42:23,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 19:42:23,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 19:42:23,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 19:42:23,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 19:42:23,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 19:42:23,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 19:42:23,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 19:42:23,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 19:42:23,673 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 19:42:23,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 19:42:23,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 19:42:23,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 19:42:23,677 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 19:42:23,678 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 19:42:23,679 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 19:42:23,679 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 19:42:23,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 19:42:23,680 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 19:42:23,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 19:42:23,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 19:42:23,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 19:42:23,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 19:42:23,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 19:42:23,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 19:42:23,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 19:42:23,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 19:42:23,686 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 19:42:23,713 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 19:42:23,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 19:42:23,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 19:42:23,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 19:42:23,715 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 19:42:23,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 19:42:23,716 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 19:42:23,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 19:42:23,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 19:42:23,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 19:42:23,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 19:42:23,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 19:42:23,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 19:42:23,717 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 19:42:23,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 19:42:23,717 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 19:42:23,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 19:42:23,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 19:42:23,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 19:42:23,722 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 19:42:23,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 19:42:23,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:42:23,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 19:42:23,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 19:42:23,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 19:42:23,724 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 19:42:23,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 19:42:23,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 19:42:23,724 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 19:42:23,724 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-08-21 19:42:24,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 19:42:24,042 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 19:42:24,046 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 19:42:24,047 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 19:42:24,048 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 19:42:24,048 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-21 19:42:24,125 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39fc473b0/297b8d038dc646e9a33d55cbb960cbc8/FLAGa38003e59 [2020-08-21 19:42:24,634 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 19:42:24,634 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-21 19:42:24,642 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39fc473b0/297b8d038dc646e9a33d55cbb960cbc8/FLAGa38003e59 [2020-08-21 19:42:25,014 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39fc473b0/297b8d038dc646e9a33d55cbb960cbc8 [2020-08-21 19:42:25,027 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 19:42:25,028 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 19:42:25,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 19:42:25,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 19:42:25,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 19:42:25,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:42:25" (1/1) ... [2020-08-21 19:42:25,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22fe211e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:25, skipping insertion in model container [2020-08-21 19:42:25,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:42:25" (1/1) ... [2020-08-21 19:42:25,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 19:42:25,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 19:42:25,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:42:25,311 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 19:42:25,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:42:25,449 INFO L208 MainTranslator]: Completed translation [2020-08-21 19:42:25,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:25 WrapperNode [2020-08-21 19:42:25,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 19:42:25,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 19:42:25,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 19:42:25,451 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 19:42:25,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:25" (1/1) ... [2020-08-21 19:42:25,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:25" (1/1) ... [2020-08-21 19:42:25,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:25" (1/1) ... [2020-08-21 19:42:25,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:25" (1/1) ... [2020-08-21 19:42:25,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:25" (1/1) ... [2020-08-21 19:42:25,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:25" (1/1) ... [2020-08-21 19:42:25,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:25" (1/1) ... [2020-08-21 19:42:25,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 19:42:25,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 19:42:25,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 19:42:25,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 19:42:25,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:42:25,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 19:42:25,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 19:42:25,570 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-21 19:42:25,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-21 19:42:25,570 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 19:42:25,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 19:42:25,570 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-21 19:42:25,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 19:42:25,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 19:42:25,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 19:42:25,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 19:42:25,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 19:42:25,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 19:42:25,572 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-21 19:42:25,572 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 19:42:25,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 19:42:25,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 19:42:25,921 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 19:42:25,921 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-21 19:42:25,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:42:25 BoogieIcfgContainer [2020-08-21 19:42:25,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 19:42:25,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 19:42:25,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 19:42:25,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 19:42:25,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 07:42:25" (1/3) ... [2020-08-21 19:42:25,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564c2eaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:42:25, skipping insertion in model container [2020-08-21 19:42:25,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:25" (2/3) ... [2020-08-21 19:42:25,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564c2eaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:42:25, skipping insertion in model container [2020-08-21 19:42:25,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:42:25" (3/3) ... [2020-08-21 19:42:25,937 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-08-21 19:42:25,949 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 19:42:25,957 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 19:42:25,975 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 19:42:26,008 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 19:42:26,008 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 19:42:26,008 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 19:42:26,008 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 19:42:26,008 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 19:42:26,009 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 19:42:26,009 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 19:42:26,009 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 19:42:26,031 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-08-21 19:42:26,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 19:42:26,038 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:42:26,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:42:26,040 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:42:26,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:42:26,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1202696015, now seen corresponding path program 1 times [2020-08-21 19:42:26,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:42:26,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437978969] [2020-08-21 19:42:26,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:42:26,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:42:26,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:42:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:42:26,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:42:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:42:26,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:42:26,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437978969] [2020-08-21 19:42:26,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:42:26,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 19:42:26,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975229] [2020-08-21 19:42:26,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 19:42:26,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:42:26,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 19:42:26,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 19:42:26,316 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-08-21 19:42:26,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:42:26,572 INFO L93 Difference]: Finished difference Result 94 states and 139 transitions. [2020-08-21 19:42:26,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 19:42:26,573 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-21 19:42:26,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:42:26,584 INFO L225 Difference]: With dead ends: 94 [2020-08-21 19:42:26,585 INFO L226 Difference]: Without dead ends: 47 [2020-08-21 19:42:26,589 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 [2020-08-21 19:42:26,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-08-21 19:42:26,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-08-21 19:42:26,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-21 19:42:26,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-08-21 19:42:26,639 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-08-21 19:42:26,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:42:26,639 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-08-21 19:42:26,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 19:42:26,640 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-08-21 19:42:26,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 19:42:26,641 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:42:26,641 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] [2020-08-21 19:42:26,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 19:42:26,642 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:42:26,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:42:26,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1688222156, now seen corresponding path program 1 times [2020-08-21 19:42:26,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:42:26,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043049267] [2020-08-21 19:42:26,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:42:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 19:42:26,698 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 19:42:26,698 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 19:42:26,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 19:42:26,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 07:42:26 BoogieIcfgContainer [2020-08-21 19:42:26,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 19:42:26,749 INFO L168 Benchmark]: Toolchain (without parser) took 1720.28 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 102.6 MB in the beginning and 104.3 MB in the end (delta: -1.7 MB). Peak memory consumption was 60.2 MB. Max. memory is 7.1 GB. [2020-08-21 19:42:26,751 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 19:42:26,752 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.23 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 102.4 MB in the beginning and 179.4 MB in the end (delta: -77.1 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-08-21 19:42:26,753 INFO L168 Benchmark]: Boogie Preprocessor took 56.38 ms. Allocated memory is still 201.3 MB. Free memory was 179.4 MB in the beginning and 177.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-21 19:42:26,754 INFO L168 Benchmark]: RCFGBuilder took 420.32 ms. Allocated memory is still 201.3 MB. Free memory was 177.1 MB in the beginning and 153.6 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-08-21 19:42:26,755 INFO L168 Benchmark]: TraceAbstraction took 817.30 ms. Allocated memory is still 201.3 MB. Free memory was 152.9 MB in the beginning and 104.3 MB in the end (delta: 48.6 MB). Peak memory consumption was 48.6 MB. Max. memory is 7.1 GB. [2020-08-21 19:42:26,760 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 421.23 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 102.4 MB in the beginning and 179.4 MB in the end (delta: -77.1 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.38 ms. Allocated memory is still 201.3 MB. Free memory was 179.4 MB in the beginning and 177.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 420.32 ms. Allocated memory is still 201.3 MB. Free memory was 177.1 MB in the beginning and 153.6 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 817.30 ms. Allocated memory is still 201.3 MB. Free memory was 152.9 MB in the beginning and 104.3 MB in the end (delta: 48.6 MB). Peak memory consumption was 48.6 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: 0.7s, 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...