/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=SMALLEST --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_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:40:55,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:40:55,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:40:55,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:40:55,149 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:40:55,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:40:55,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:40:55,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:40:55,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:40:55,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:40:55,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:40:55,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:40:55,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:40:55,174 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:40:55,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:40:55,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:40:55,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:40:55,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:40:55,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:40:55,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:40:55,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:40:55,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:40:55,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:40:55,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:40:55,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 15:40:55,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 15:40:55,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 15:40:55,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 15:40:55,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 15:40:55,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 15:40:55,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 15:40:55,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 15:40:55,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 15:40:55,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 15:40:55,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 15:40:55,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 15:40:55,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 15:40:55,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 15:40:55,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:40:55,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:40:55,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:40:55,228 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 15:40:55,265 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:40:55,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:40:55,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:40:55,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:40:55,268 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:40:55,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:40:55,268 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:40:55,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:40:55,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:40:55,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:40:55,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:40:55,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:40:55,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:40:55,271 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:40:55,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:40:55,271 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:40:55,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:40:55,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:40:55,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:40:55,272 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:40:55,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:40:55,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:40:55,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:40:55,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:40:55,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:40:55,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:40:55,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:40:55,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:40:55,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:40:55,274 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=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 15:40:55,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:40:55,606 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:40:55,612 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:40:55,614 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:40:55,614 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:40:55,615 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-21 15:40:55,687 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f17e60543/5605b11ae6d249a69d9017926aece370/FLAG25534d149 [2020-08-21 15:40:56,124 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:40:56,124 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-21 15:40:56,133 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f17e60543/5605b11ae6d249a69d9017926aece370/FLAG25534d149 [2020-08-21 15:40:56,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f17e60543/5605b11ae6d249a69d9017926aece370 [2020-08-21 15:40:56,532 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:40:56,533 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:40:56,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:40:56,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:40:56,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:40:56,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:40:56" (1/1) ... [2020-08-21 15:40:56,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2088d45a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:40:56, skipping insertion in model container [2020-08-21 15:40:56,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:40:56" (1/1) ... [2020-08-21 15:40:56,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:40:56,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:40:56,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:40:56,815 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:40:56,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:40:56,979 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:40:56,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:40:56 WrapperNode [2020-08-21 15:40:56,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:40:56,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:40:56,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:40:56,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:40:56,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:40:56" (1/1) ... [2020-08-21 15:40:56,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:40:56" (1/1) ... [2020-08-21 15:40:57,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:40:56" (1/1) ... [2020-08-21 15:40:57,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:40:56" (1/1) ... [2020-08-21 15:40:57,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:40:56" (1/1) ... [2020-08-21 15:40:57,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:40:56" (1/1) ... [2020-08-21 15:40:57,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:40:56" (1/1) ... [2020-08-21 15:40:57,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:40:57,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:40:57,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:40:57,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:40:57,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:40:56" (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 15:40:57,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:40:57,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:40:57,107 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 15:40:57,107 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-21 15:40:57,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-21 15:40:57,108 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:40:57,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:40:57,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-21 15:40:57,108 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 15:40:57,108 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-21 15:40:57,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:40:57,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 15:40:57,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:40:57,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:40:57,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 15:40:57,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:40:57,109 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-21 15:40:57,109 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:40:57,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:40:57,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-21 15:40:57,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:40:57,678 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:40:57,678 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-21 15:40:57,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:40:57 BoogieIcfgContainer [2020-08-21 15:40:57,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:40:57,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:40:57,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:40:57,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:40:57,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:40:56" (1/3) ... [2020-08-21 15:40:57,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e13ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:40:57, skipping insertion in model container [2020-08-21 15:40:57,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:40:56" (2/3) ... [2020-08-21 15:40:57,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e13ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:40:57, skipping insertion in model container [2020-08-21 15:40:57,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:40:57" (3/3) ... [2020-08-21 15:40:57,694 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-08-21 15:40:57,705 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:40:57,713 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:40:57,727 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:40:57,752 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:40:57,753 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:40:57,753 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:40:57,753 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:40:57,753 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:40:57,753 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:40:57,754 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:40:57,754 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:40:57,776 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-08-21 15:40:57,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 15:40:57,783 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:40:57,784 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 15:40:57,785 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:40:57,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:40:57,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-08-21 15:40:57,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:40:57,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545973504] [2020-08-21 15:40:57,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:40:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:57,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:58,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 15:40:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:58,033 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 15:40:58,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545973504] [2020-08-21 15:40:58,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:40:58,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 15:40:58,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889332959] [2020-08-21 15:40:58,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 15:40:58,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:40:58,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 15:40:58,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:40:58,062 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-08-21 15:40:58,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:40:58,422 INFO L93 Difference]: Finished difference Result 142 states and 232 transitions. [2020-08-21 15:40:58,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:40:58,424 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-21 15:40:58,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:40:58,435 INFO L225 Difference]: With dead ends: 142 [2020-08-21 15:40:58,435 INFO L226 Difference]: Without dead ends: 69 [2020-08-21 15:40:58,439 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 15:40:58,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-21 15:40:58,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-08-21 15:40:58,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-21 15:40:58,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-08-21 15:40:58,490 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-08-21 15:40:58,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:40:58,491 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-08-21 15:40:58,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 15:40:58,492 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-08-21 15:40:58,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 15:40:58,493 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:40:58,493 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] [2020-08-21 15:40:58,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:40:58,494 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:40:58,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:40:58,494 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-08-21 15:40:58,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:40:58,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818308952] [2020-08-21 15:40:58,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:40:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 15:40:58,613 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 15:40:58,614 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 15:40:58,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:40:58,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 03:40:58 BoogieIcfgContainer [2020-08-21 15:40:58,665 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 15:40:58,670 INFO L168 Benchmark]: Toolchain (without parser) took 2134.07 ms. Allocated memory was 141.0 MB in the beginning and 233.8 MB in the end (delta: 92.8 MB). Free memory was 103.5 MB in the beginning and 189.2 MB in the end (delta: -85.7 MB). Peak memory consumption was 7.1 MB. Max. memory is 7.1 GB. [2020-08-21 15:40:58,671 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 15:40:58,674 INFO L168 Benchmark]: CACSL2BoogieTranslator took 446.26 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 103.3 MB in the beginning and 179.3 MB in the end (delta: -76.0 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-08-21 15:40:58,675 INFO L168 Benchmark]: Boogie Preprocessor took 61.86 ms. Allocated memory is still 203.9 MB. Free memory was 179.3 MB in the beginning and 176.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-21 15:40:58,676 INFO L168 Benchmark]: RCFGBuilder took 641.45 ms. Allocated memory is still 203.9 MB. Free memory was 176.0 MB in the beginning and 139.7 MB in the end (delta: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. [2020-08-21 15:40:58,678 INFO L168 Benchmark]: TraceAbstraction took 979.83 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 139.0 MB in the beginning and 189.2 MB in the end (delta: -50.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 15:40:58,684 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 446.26 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 103.3 MB in the beginning and 179.3 MB in the end (delta: -76.0 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 61.86 ms. Allocated memory is still 203.9 MB. Free memory was 179.3 MB in the beginning and 176.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 641.45 ms. Allocated memory is still 203.9 MB. Free memory was 176.0 MB in the beginning and 139.7 MB in the end (delta: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 979.83 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 139.0 MB in the beginning and 189.2 MB in the end (delta: -50.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 [L187] CALL, EXPR fmod_double(x, y) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); [L187] RET, EXPR fmod_double(x, y) [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 14 SDslu, 85 SDs, 0 SdLazy, 104 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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=74occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 918 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...