/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=1000 --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_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:29:13,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:29:13,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:29:13,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:29:13,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:29:13,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:29:13,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:29:13,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:29:13,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:29:13,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:29:13,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:29:13,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:29:13,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:29:13,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:29:13,087 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:29:13,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:29:13,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:29:13,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:29:13,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:29:13,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:29:13,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:29:13,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:29:13,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:29:13,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:29:13,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:29:13,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:29:13,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:29:13,101 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:29:13,102 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:29:13,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:29:13,103 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:29:13,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:29:13,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:29:13,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:29:13,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:29:13,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:29:13,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:29:13,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:29:13,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:29:13,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:29:13,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:29:13,110 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 16:29:13,134 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:29:13,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:29:13,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:29:13,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:29:13,136 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:29:13,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:29:13,137 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:29:13,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:29:13,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:29:13,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:29:13,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:29:13,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:29:13,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:29:13,138 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:29:13,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:29:13,139 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:29:13,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:29:13,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:29:13,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:29:13,140 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:29:13,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:29:13,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:29:13,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:29:13,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:29:13,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:29:13,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:29:13,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:29:13,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:29:13,142 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:29:13,142 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:29:13,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:29:13,481 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:29:13,486 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:29:13,489 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:29:13,489 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:29:13,490 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-21 16:29:13,546 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56937e8fd/af9001017ec047bfbcd95b4f6b45720f/FLAG857861be8 [2020-08-21 16:29:14,045 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:29:14,046 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-21 16:29:14,057 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56937e8fd/af9001017ec047bfbcd95b4f6b45720f/FLAG857861be8 [2020-08-21 16:29:14,401 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56937e8fd/af9001017ec047bfbcd95b4f6b45720f [2020-08-21 16:29:14,412 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:29:14,413 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:29:14,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:29:14,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:29:14,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:29:14,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:29:14" (1/1) ... [2020-08-21 16:29:14,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a47163c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14, skipping insertion in model container [2020-08-21 16:29:14,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:29:14" (1/1) ... [2020-08-21 16:29:14,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:29:14,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:29:14,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:29:14,718 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:29:14,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:29:14,879 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:29:14,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14 WrapperNode [2020-08-21 16:29:14,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:29:14,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:29:14,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:29:14,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:29:14,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14" (1/1) ... [2020-08-21 16:29:14,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14" (1/1) ... [2020-08-21 16:29:14,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14" (1/1) ... [2020-08-21 16:29:14,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14" (1/1) ... [2020-08-21 16:29:14,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14" (1/1) ... [2020-08-21 16:29:14,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14" (1/1) ... [2020-08-21 16:29:14,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14" (1/1) ... [2020-08-21 16:29:14,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:29:14,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:29:14,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:29:14,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:29:14,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14" (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 16:29:15,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:29:15,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:29:15,020 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 16:29:15,020 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-21 16:29:15,021 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-21 16:29:15,021 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:29:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:29:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-21 16:29:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 16:29:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-21 16:29:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 16:29:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 16:29:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 16:29:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 16:29:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 16:29:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 16:29:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-21 16:29:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:29:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:29:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-21 16:29:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:29:15,623 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:29:15,623 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-21 16:29:15,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:29:15 BoogieIcfgContainer [2020-08-21 16:29:15,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:29:15,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:29:15,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:29:15,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:29:15,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:29:14" (1/3) ... [2020-08-21 16:29:15,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@626fc203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:29:15, skipping insertion in model container [2020-08-21 16:29:15,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14" (2/3) ... [2020-08-21 16:29:15,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@626fc203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:29:15, skipping insertion in model container [2020-08-21 16:29:15,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:29:15" (3/3) ... [2020-08-21 16:29:15,636 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-08-21 16:29:15,646 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:29:15,654 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:29:15,668 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:29:15,691 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:29:15,691 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:29:15,691 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:29:15,691 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:29:15,692 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:29:15,692 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:29:15,692 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:29:15,692 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:29:15,710 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-21 16:29:15,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-21 16:29:15,717 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:29:15,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:29:15,719 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:29:15,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:29:15,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-08-21 16:29:15,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:29:15,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36022924] [2020-08-21 16:29:15,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:29:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:15,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:29:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:15,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:29:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:15,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 16:29:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:15,988 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 16:29:15,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36022924] [2020-08-21 16:29:15,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:29:15,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 16:29:15,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818850078] [2020-08-21 16:29:15,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 16:29:15,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:29:16,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 16:29:16,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 16:29:16,016 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-08-21 16:29:16,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:29:16,337 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-08-21 16:29:16,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 16:29:16,354 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-21 16:29:16,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:29:16,365 INFO L225 Difference]: With dead ends: 138 [2020-08-21 16:29:16,366 INFO L226 Difference]: Without dead ends: 68 [2020-08-21 16:29:16,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 16:29:16,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-21 16:29:16,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-21 16:29:16,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-21 16:29:16,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-08-21 16:29:16,425 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-08-21 16:29:16,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:29:16,425 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-08-21 16:29:16,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 16:29:16,426 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-08-21 16:29:16,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-21 16:29:16,427 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:29:16,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:29:16,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:29:16,428 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:29:16,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:29:16,429 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-08-21 16:29:16,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:29:16,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262911114] [2020-08-21 16:29:16,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:29:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 16:29:16,560 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 16:29:16,560 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 16:29:16,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:29:16,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 04:29:16 BoogieIcfgContainer [2020-08-21 16:29:16,615 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 16:29:16,618 INFO L168 Benchmark]: Toolchain (without parser) took 2203.44 ms. Allocated memory was 138.9 MB in the beginning and 234.4 MB in the end (delta: 95.4 MB). Free memory was 101.5 MB in the beginning and 193.0 MB in the end (delta: -91.5 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:16,621 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 16:29:16,622 INFO L168 Benchmark]: CACSL2BoogieTranslator took 463.36 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 101.3 MB in the beginning and 177.5 MB in the end (delta: -76.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:16,623 INFO L168 Benchmark]: Boogie Preprocessor took 69.57 ms. Allocated memory is still 202.4 MB. Free memory was 177.5 MB in the beginning and 174.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:16,625 INFO L168 Benchmark]: RCFGBuilder took 674.37 ms. Allocated memory is still 202.4 MB. Free memory was 174.8 MB in the beginning and 138.0 MB in the end (delta: 36.8 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:16,626 INFO L168 Benchmark]: TraceAbstraction took 985.59 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 138.0 MB in the beginning and 193.0 MB in the end (delta: -55.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 16:29:16,633 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 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 463.36 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 101.3 MB in the beginning and 177.5 MB in the end (delta: -76.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.57 ms. Allocated memory is still 202.4 MB. Free memory was 177.5 MB in the beginning and 174.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 674.37 ms. Allocated memory is still 202.4 MB. Free memory was 174.8 MB in the beginning and 138.0 MB in the end (delta: 36.8 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 985.59 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 138.0 MB in the beginning and 193.0 MB in the end (delta: -55.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 189]: 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 someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryDOUBLEComparisonOperation at line 188, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L183] CALL isfinite_double(x) [L164] __int32_t hx; [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L183] RET isfinite_double(x) [L183] COND TRUE isfinite_double(x) [L185] 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); [L185] RET, EXPR fmod_double(x, y) [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x [L189] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 76 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: 97 SDtfs, 6 SDslu, 87 SDs, 0 SdLazy, 102 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 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...