/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 -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 0.1.25-5644d1e-m [2020-08-19 05:08:46,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:08:46,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:08:46,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:08:46,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:08:46,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:08:46,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:08:46,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:08:46,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:08:46,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:08:46,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:08:46,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:08:46,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:08:46,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:08:46,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:08:46,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:08:46,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:08:46,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:08:46,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:08:46,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:08:46,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:08:46,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:08:46,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:08:46,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:08:46,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:08:46,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:08:46,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:08:46,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:08:46,733 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:08:46,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 05:08:46,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 05:08:46,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 05:08:46,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 05:08:46,737 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 05:08:46,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 05:08:46,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 05:08:46,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 05:08:46,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 05:08:46,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:08:46,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:08:46,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:08:46,741 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 [2020-08-19 05:08:46,764 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:08:46,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:08:46,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:08:46,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:08:46,766 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:08:46,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:08:46,767 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:08:46,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:08:46,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:08:46,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:08:46,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:08:46,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:08:46,768 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:08:46,768 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:08:46,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:08:46,768 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:08:46,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:08:46,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:08:46,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:08:46,769 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:08:46,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:08:46,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:08:46,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:08:46,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:08:46,770 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:08:46,770 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:08:46,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:08:46,771 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:08:46,771 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:08:46,771 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=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; [2020-08-19 05:08:47,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:08:47,111 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:08:47,114 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:08:47,115 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:08:47,116 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:08:47,116 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-19 05:08:47,178 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bdad29bf/6fdc12f3ed144d34a50b6cc583d0c9ae/FLAGd09f1b8aa [2020-08-19 05:08:47,694 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:08:47,695 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-19 05:08:47,703 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bdad29bf/6fdc12f3ed144d34a50b6cc583d0c9ae/FLAGd09f1b8aa [2020-08-19 05:08:48,014 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bdad29bf/6fdc12f3ed144d34a50b6cc583d0c9ae [2020-08-19 05:08:48,025 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:08:48,027 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:08:48,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:08:48,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:08:48,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:08:48,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:08:48" (1/1) ... [2020-08-19 05:08:48,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cfafcce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:48, skipping insertion in model container [2020-08-19 05:08:48,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:08:48" (1/1) ... [2020-08-19 05:08:48,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:08:48,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:08:48,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:08:48,316 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:08:48,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:08:48,488 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:08:48,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:48 WrapperNode [2020-08-19 05:08:48,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:08:48,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:08:48,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:08:48,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:08:48,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:48" (1/1) ... [2020-08-19 05:08:48,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:48" (1/1) ... [2020-08-19 05:08:48,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:48" (1/1) ... [2020-08-19 05:08:48,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:48" (1/1) ... [2020-08-19 05:08:48,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:48" (1/1) ... [2020-08-19 05:08:48,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:48" (1/1) ... [2020-08-19 05:08:48,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:48" (1/1) ... [2020-08-19 05:08:48,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:08:48,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:08:48,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:08:48,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:08:48,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:48" (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 [2020-08-19 05:08:48,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:08:48,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:08:48,640 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-19 05:08:48,640 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-19 05:08:48,640 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-19 05:08:48,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:08:48,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:08:48,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-19 05:08:48,641 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-19 05:08:48,641 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-19 05:08:48,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 05:08:48,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 05:08:48,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 05:08:48,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 05:08:48,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 05:08:48,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 05:08:48,642 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-19 05:08:48,642 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:08:48,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:08:48,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-19 05:08:48,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:08:49,234 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:08:49,235 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-19 05:08:49,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:08:49 BoogieIcfgContainer [2020-08-19 05:08:49,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:08:49,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:08:49,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:08:49,245 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:08:49,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:08:48" (1/3) ... [2020-08-19 05:08:49,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b12b6ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:08:49, skipping insertion in model container [2020-08-19 05:08:49,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:08:48" (2/3) ... [2020-08-19 05:08:49,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b12b6ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:08:49, skipping insertion in model container [2020-08-19 05:08:49,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:08:49" (3/3) ... [2020-08-19 05:08:49,249 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-08-19 05:08:49,260 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:08:49,269 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:08:49,283 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:08:49,307 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:08:49,308 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:08:49,308 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:08:49,308 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:08:49,309 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:08:49,309 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:08:49,309 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:08:49,309 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:08:49,332 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-19 05:08:49,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-19 05:08:49,340 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:08:49,341 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] [2020-08-19 05:08:49,342 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:08:49,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:08:49,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-08-19 05:08:49,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:08:49,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89268798] [2020-08-19 05:08:49,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:08:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:08:49,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:08:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:08:49,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:08:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:08:49,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 05:08:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:08:49,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:08:49,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89268798] [2020-08-19 05:08:49,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:08:49,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:08:49,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509991165] [2020-08-19 05:08:49,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:08:49,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:08:49,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:08:49,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:08:49,624 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-08-19 05:08:50,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:08:50,005 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-08-19 05:08:50,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 05:08:50,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-19 05:08:50,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:08:50,022 INFO L225 Difference]: With dead ends: 138 [2020-08-19 05:08:50,022 INFO L226 Difference]: Without dead ends: 68 [2020-08-19 05:08:50,026 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 [2020-08-19 05:08:50,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-19 05:08:50,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-19 05:08:50,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-19 05:08:50,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-08-19 05:08:50,072 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-08-19 05:08:50,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:08:50,072 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-08-19 05:08:50,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:08:50,072 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-08-19 05:08:50,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 05:08:50,074 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:08:50,074 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] [2020-08-19 05:08:50,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:08:50,075 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:08:50,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:08:50,075 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-08-19 05:08:50,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:08:50,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470703512] [2020-08-19 05:08:50,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:08:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 05:08:50,188 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 05:08:50,189 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 05:08:50,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:08:50,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 05:08:50 BoogieIcfgContainer [2020-08-19 05:08:50,237 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 05:08:50,242 INFO L168 Benchmark]: Toolchain (without parser) took 2212.78 ms. Allocated memory was 140.5 MB in the beginning and 237.5 MB in the end (delta: 97.0 MB). Free memory was 103.2 MB in the beginning and 193.5 MB in the end (delta: -90.4 MB). Peak memory consumption was 6.6 MB. Max. memory is 7.1 GB. [2020-08-19 05:08:50,243 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 05:08:50,245 INFO L168 Benchmark]: CACSL2BoogieTranslator took 461.72 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.9 MB in the beginning and 178.7 MB in the end (delta: -75.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-08-19 05:08:50,246 INFO L168 Benchmark]: Boogie Preprocessor took 87.92 ms. Allocated memory is still 203.4 MB. Free memory was 178.7 MB in the beginning and 176.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-19 05:08:50,247 INFO L168 Benchmark]: RCFGBuilder took 662.00 ms. Allocated memory is still 203.4 MB. Free memory was 176.1 MB in the beginning and 139.7 MB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. [2020-08-19 05:08:50,248 INFO L168 Benchmark]: TraceAbstraction took 995.61 ms. Allocated memory was 203.4 MB in the beginning and 237.5 MB in the end (delta: 34.1 MB). Free memory was 139.1 MB in the beginning and 193.5 MB in the end (delta: -54.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 05:08:50,253 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 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 461.72 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.9 MB in the beginning and 178.7 MB in the end (delta: -75.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.92 ms. Allocated memory is still 203.4 MB. Free memory was 178.7 MB in the beginning and 176.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 662.00 ms. Allocated memory is still 203.4 MB. Free memory was 176.1 MB in the beginning and 139.7 MB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 995.61 ms. Allocated memory was 203.4 MB in the beginning and 237.5 MB in the end (delta: 34.1 MB). Free memory was 139.1 MB in the beginning and 193.5 MB in the end (delta: -54.4 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: 0.4s, 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, 0.0s 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...