/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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 [2020-08-22 06:13:52,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 06:13:52,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 06:13:52,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 06:13:52,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 06:13:52,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 06:13:52,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 06:13:52,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 06:13:52,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 06:13:52,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 06:13:52,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 06:13:52,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 06:13:52,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 06:13:52,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 06:13:52,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 06:13:52,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 06:13:52,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 06:13:52,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 06:13:52,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 06:13:52,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 06:13:52,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 06:13:52,218 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 06:13:52,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 06:13:52,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 06:13:52,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 06:13:52,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 06:13:52,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 06:13:52,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 06:13:52,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 06:13:52,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 06:13:52,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 06:13:52,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 06:13:52,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 06:13:52,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 06:13:52,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 06:13:52,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 06:13:52,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 06:13:52,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 06:13:52,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 06:13:52,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 06:13:52,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 06:13:52,237 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 [2020-08-22 06:13:52,281 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 06:13:52,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 06:13:52,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 06:13:52,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 06:13:52,284 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 06:13:52,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 06:13:52,284 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 06:13:52,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 06:13:52,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 06:13:52,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 06:13:52,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 06:13:52,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 06:13:52,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 06:13:52,287 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 06:13:52,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 06:13:52,287 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 06:13:52,287 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 06:13:52,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 06:13:52,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 06:13:52,288 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 06:13:52,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 06:13:52,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:13:52,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 06:13:52,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 06:13:52,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 06:13:52,289 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 06:13:52,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 06:13:52,289 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 06:13:52,289 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 06:13:52,290 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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-08-22 06:13:52,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 06:13:52,594 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 06:13:52,597 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 06:13:52,599 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 06:13:52,599 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 06:13:52,600 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-22 06:13:52,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/942dae97e/fdd2b5984ceb44c3ab034bcc8d878b41/FLAG81e683cd8 [2020-08-22 06:13:53,091 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 06:13:53,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-22 06:13:53,100 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/942dae97e/fdd2b5984ceb44c3ab034bcc8d878b41/FLAG81e683cd8 [2020-08-22 06:13:53,457 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/942dae97e/fdd2b5984ceb44c3ab034bcc8d878b41 [2020-08-22 06:13:53,465 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 06:13:53,467 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 06:13:53,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 06:13:53,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 06:13:53,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 06:13:53,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:13:53" (1/1) ... [2020-08-22 06:13:53,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69410267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:53, skipping insertion in model container [2020-08-22 06:13:53,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:13:53" (1/1) ... [2020-08-22 06:13:53,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 06:13:53,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 06:13:53,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:13:53,801 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 06:13:53,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:13:53,987 INFO L208 MainTranslator]: Completed translation [2020-08-22 06:13:53,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:53 WrapperNode [2020-08-22 06:13:53,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 06:13:53,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 06:13:53,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 06:13:53,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 06:13:54,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:53" (1/1) ... [2020-08-22 06:13:54,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:53" (1/1) ... [2020-08-22 06:13:54,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:53" (1/1) ... [2020-08-22 06:13:54,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:53" (1/1) ... [2020-08-22 06:13:54,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:53" (1/1) ... [2020-08-22 06:13:54,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:53" (1/1) ... [2020-08-22 06:13:54,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:53" (1/1) ... [2020-08-22 06:13:54,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 06:13:54,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 06:13:54,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 06:13:54,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 06:13:54,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:53" (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 [2020-08-22 06:13:54,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 06:13:54,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 06:13:54,118 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 06:13:54,118 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-22 06:13:54,118 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-22 06:13:54,118 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 06:13:54,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 06:13:54,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-22 06:13:54,119 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 06:13:54,119 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-22 06:13:54,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 06:13:54,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 06:13:54,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 06:13:54,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 06:13:54,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 06:13:54,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 06:13:54,120 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-22 06:13:54,120 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 06:13:54,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 06:13:54,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-22 06:13:54,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 06:13:54,753 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 06:13:54,754 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-22 06:13:54,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:13:54 BoogieIcfgContainer [2020-08-22 06:13:54,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 06:13:54,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 06:13:54,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 06:13:54,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 06:13:54,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:13:53" (1/3) ... [2020-08-22 06:13:54,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b8c02cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:13:54, skipping insertion in model container [2020-08-22 06:13:54,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:13:53" (2/3) ... [2020-08-22 06:13:54,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b8c02cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:13:54, skipping insertion in model container [2020-08-22 06:13:54,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:13:54" (3/3) ... [2020-08-22 06:13:54,770 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-08-22 06:13:54,781 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 06:13:54,790 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 06:13:54,804 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 06:13:54,827 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 06:13:54,827 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 06:13:54,827 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 06:13:54,827 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 06:13:54,827 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 06:13:54,828 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 06:13:54,828 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 06:13:54,828 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 06:13:54,847 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-22 06:13:54,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-22 06:13:54,854 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:13:54,855 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] [2020-08-22 06:13:54,855 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:13:54,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:13:54,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-08-22 06:13:54,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:13:54,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715839872] [2020-08-22 06:13:54,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:13:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:13:55,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:13:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:13:55,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:13:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:13:55,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 06:13:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:13:55,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:13:55,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715839872] [2020-08-22 06:13:55,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:13:55,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 06:13:55,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745581829] [2020-08-22 06:13:55,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 06:13:55,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:13:55,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 06:13:55,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 06:13:55,176 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-08-22 06:13:55,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:13:55,545 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-08-22 06:13:55,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 06:13:55,549 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-22 06:13:55,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:13:55,571 INFO L225 Difference]: With dead ends: 138 [2020-08-22 06:13:55,572 INFO L226 Difference]: Without dead ends: 68 [2020-08-22 06:13:55,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:13:55,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-22 06:13:55,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-22 06:13:55,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-22 06:13:55,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-08-22 06:13:55,660 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-08-22 06:13:55,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:13:55,661 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-08-22 06:13:55,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 06:13:55,661 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-08-22 06:13:55,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 06:13:55,664 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:13:55,664 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] [2020-08-22 06:13:55,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 06:13:55,665 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:13:55,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:13:55,666 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-08-22 06:13:55,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:13:55,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782858600] [2020-08-22 06:13:55,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:13:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 06:13:55,868 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 06:13:55,868 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 06:13:55,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 06:13:55,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:13:55 BoogieIcfgContainer [2020-08-22 06:13:55,917 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 06:13:55,921 INFO L168 Benchmark]: Toolchain (without parser) took 2451.74 ms. Allocated memory was 141.6 MB in the beginning and 232.8 MB in the end (delta: 91.2 MB). Free memory was 104.2 MB in the beginning and 185.6 MB in the end (delta: -81.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-08-22 06:13:55,922 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 06:13:55,928 INFO L168 Benchmark]: CACSL2BoogieTranslator took 520.18 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 104.0 MB in the beginning and 179.9 MB in the end (delta: -75.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-08-22 06:13:55,929 INFO L168 Benchmark]: Boogie Preprocessor took 66.26 ms. Allocated memory is still 204.5 MB. Free memory was 179.9 MB in the beginning and 176.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-08-22 06:13:55,930 INFO L168 Benchmark]: RCFGBuilder took 704.92 ms. Allocated memory is still 204.5 MB. Free memory was 176.7 MB in the beginning and 140.7 MB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. [2020-08-22 06:13:55,931 INFO L168 Benchmark]: TraceAbstraction took 1153.76 ms. Allocated memory was 204.5 MB in the beginning and 232.8 MB in the end (delta: 28.3 MB). Free memory was 140.0 MB in the beginning and 185.6 MB in the end (delta: -45.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 06:13:55,935 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 520.18 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 104.0 MB in the beginning and 179.9 MB in the end (delta: -75.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 66.26 ms. Allocated memory is still 204.5 MB. Free memory was 179.9 MB in the beginning and 176.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 704.92 ms. Allocated memory is still 204.5 MB. Free memory was 176.7 MB in the beginning and 140.7 MB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1153.76 ms. Allocated memory was 204.5 MB in the beginning and 232.8 MB in the end (delta: 28.3 MB). Free memory was 140.0 MB in the beginning and 185.6 MB in the end (delta: -45.6 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: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, 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, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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, 0.2s 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...