/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=HIGHLEXORDER --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 18:54:06,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:54:06,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:54:06,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:54:06,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:54:06,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:54:06,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:54:06,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:54:06,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:54:06,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:54:06,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:54:06,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:54:06,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:54:06,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:54:06,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:54:06,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:54:06,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:54:06,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:54:06,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:54:06,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:54:06,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:54:06,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:54:06,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:54:06,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:54:06,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:54:06,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:54:06,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:54:06,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:54:06,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:54:06,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:54:06,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:54:06,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:54:06,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:54:06,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:54:06,863 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:54:06,863 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:54:06,864 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:54:06,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:54:06,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:54:06,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:54:06,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:54:06,867 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 18:54:06,890 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:54:06,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:54:06,891 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:54:06,892 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:54:06,892 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:54:06,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:54:06,892 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:54:06,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:54:06,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:54:06,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:54:06,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:54:06,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:54:06,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:54:06,894 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:54:06,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:54:06,894 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:54:06,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:54:06,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:54:06,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:54:06,895 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:54:06,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:54:06,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:54:06,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:54:06,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:54:06,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:54:06,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:54:06,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:54:06,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:54:06,897 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:54:06,897 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=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-08-21 18:54:07,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:54:07,256 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:54:07,261 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:54:07,262 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:54:07,263 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:54:07,264 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-21 18:54:07,342 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b12fe3ad/6dee67fb87c549acb3b025ce6ebf6607/FLAG67566ef65 [2020-08-21 18:54:07,832 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:54:07,833 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-21 18:54:07,841 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b12fe3ad/6dee67fb87c549acb3b025ce6ebf6607/FLAG67566ef65 [2020-08-21 18:54:08,182 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b12fe3ad/6dee67fb87c549acb3b025ce6ebf6607 [2020-08-21 18:54:08,193 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:54:08,195 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:54:08,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:54:08,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:54:08,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:54:08,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:54:08" (1/1) ... [2020-08-21 18:54:08,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc260e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:08, skipping insertion in model container [2020-08-21 18:54:08,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:54:08" (1/1) ... [2020-08-21 18:54:08,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:54:08,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:54:08,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:54:08,471 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:54:08,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:54:08,632 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:54:08,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:08 WrapperNode [2020-08-21 18:54:08,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:54:08,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:54:08,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:54:08,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:54:08,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:08" (1/1) ... [2020-08-21 18:54:08,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:08" (1/1) ... [2020-08-21 18:54:08,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:08" (1/1) ... [2020-08-21 18:54:08,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:08" (1/1) ... [2020-08-21 18:54:08,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:08" (1/1) ... [2020-08-21 18:54:08,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:08" (1/1) ... [2020-08-21 18:54:08,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:08" (1/1) ... [2020-08-21 18:54:08,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:54:08,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:54:08,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:54:08,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:54:08,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:08" (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 18:54:08,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:54:08,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:54:08,765 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 18:54:08,765 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-21 18:54:08,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-21 18:54:08,766 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:54:08,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:54:08,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-21 18:54:08,766 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 18:54:08,766 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-21 18:54:08,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:54:08,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 18:54:08,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:54:08,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:54:08,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 18:54:08,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:54:08,768 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-21 18:54:08,768 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:54:08,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:54:08,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-21 18:54:08,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:54:09,395 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:54:09,395 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-21 18:54:09,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:54:09 BoogieIcfgContainer [2020-08-21 18:54:09,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:54:09,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:54:09,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:54:09,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:54:09,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:54:08" (1/3) ... [2020-08-21 18:54:09,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ee2754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:54:09, skipping insertion in model container [2020-08-21 18:54:09,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:08" (2/3) ... [2020-08-21 18:54:09,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ee2754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:54:09, skipping insertion in model container [2020-08-21 18:54:09,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:54:09" (3/3) ... [2020-08-21 18:54:09,410 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-08-21 18:54:09,422 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:54:09,431 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:54:09,447 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:54:09,470 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:54:09,470 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:54:09,470 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:54:09,470 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:54:09,470 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:54:09,471 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:54:09,471 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:54:09,471 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:54:09,492 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-08-21 18:54:09,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 18:54:09,499 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:54:09,500 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 18:54:09,501 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:54:09,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:54:09,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-08-21 18:54:09,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:54:09,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717818067] [2020-08-21 18:54:09,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:54:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:09,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:54:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:09,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 18:54:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:09,752 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 18:54:09,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717818067] [2020-08-21 18:54:09,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:54:09,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 18:54:09,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452702573] [2020-08-21 18:54:09,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 18:54:09,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:54:09,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 18:54:09,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:54:09,780 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-08-21 18:54:10,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:54:10,083 INFO L93 Difference]: Finished difference Result 142 states and 232 transitions. [2020-08-21 18:54:10,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 18:54:10,085 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-21 18:54:10,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:54:10,097 INFO L225 Difference]: With dead ends: 142 [2020-08-21 18:54:10,098 INFO L226 Difference]: Without dead ends: 69 [2020-08-21 18:54:10,102 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 18:54:10,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-21 18:54:10,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-08-21 18:54:10,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-21 18:54:10,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-08-21 18:54:10,178 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-08-21 18:54:10,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:54:10,178 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-08-21 18:54:10,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 18:54:10,179 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-08-21 18:54:10,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 18:54:10,180 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:54:10,180 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 18:54:10,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:54:10,181 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:54:10,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:54:10,182 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-08-21 18:54:10,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:54:10,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336219724] [2020-08-21 18:54:10,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:54:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 18:54:10,309 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 18:54:10,310 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 18:54:10,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:54:10,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 06:54:10 BoogieIcfgContainer [2020-08-21 18:54:10,344 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 18:54:10,347 INFO L168 Benchmark]: Toolchain (without parser) took 2152.02 ms. Allocated memory was 137.4 MB in the beginning and 228.6 MB in the end (delta: 91.2 MB). Free memory was 100.1 MB in the beginning and 189.9 MB in the end (delta: -89.8 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-08-21 18:54:10,348 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 18:54:10,350 INFO L168 Benchmark]: CACSL2BoogieTranslator took 437.54 ms. Allocated memory was 137.4 MB in the beginning and 199.2 MB in the end (delta: 61.9 MB). Free memory was 99.9 MB in the beginning and 174.2 MB in the end (delta: -74.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-08-21 18:54:10,350 INFO L168 Benchmark]: Boogie Preprocessor took 64.57 ms. Allocated memory is still 199.2 MB. Free memory was 174.2 MB in the beginning and 171.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-08-21 18:54:10,351 INFO L168 Benchmark]: RCFGBuilder took 701.74 ms. Allocated memory is still 199.2 MB. Free memory was 171.4 MB in the beginning and 134.6 MB in the end (delta: 36.8 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. [2020-08-21 18:54:10,352 INFO L168 Benchmark]: TraceAbstraction took 942.62 ms. Allocated memory was 199.2 MB in the beginning and 228.6 MB in the end (delta: 29.4 MB). Free memory was 133.9 MB in the beginning and 189.9 MB in the end (delta: -56.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 18:54:10,356 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 437.54 ms. Allocated memory was 137.4 MB in the beginning and 199.2 MB in the end (delta: 61.9 MB). Free memory was 99.9 MB in the beginning and 174.2 MB in the end (delta: -74.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.57 ms. Allocated memory is still 199.2 MB. Free memory was 174.2 MB in the beginning and 171.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 701.74 ms. Allocated memory is still 199.2 MB. Free memory was 171.4 MB in the beginning and 134.6 MB in the end (delta: 36.8 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 942.62 ms. Allocated memory was 199.2 MB in the beginning and 228.6 MB in the end (delta: 29.4 MB). Free memory was 133.9 MB in the beginning and 189.9 MB in the end (delta: -56.0 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, 0.1s 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=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...