/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 false -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 [2020-08-18 15:25:39,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 15:25:39,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 15:25:39,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 15:25:39,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 15:25:39,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 15:25:39,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 15:25:39,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 15:25:39,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 15:25:39,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 15:25:39,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 15:25:39,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 15:25:39,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:25:39,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:25:39,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:25:39,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:25:39,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:25:39,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:25:39,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:25:39,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:25:39,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:25:39,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:25:39,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:25:39,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:25:39,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 15:25:39,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 15:25:39,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 15:25:39,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 15:25:39,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 15:25:39,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 15:25:39,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 15:25:39,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 15:25:39,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 15:25:39,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 15:25:39,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 15:25:39,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 15:25:39,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 15:25:39,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 15:25:39,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:25:39,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:25:39,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:25:39,692 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 [2020-08-18 15:25:39,713 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:25:39,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:25:39,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:25:39,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:25:39,715 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:25:39,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:25:39,715 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 15:25:39,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:25:39,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 15:25:39,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:25:39,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:25:39,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:25:39,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:25:39,716 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 15:25:39,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:25:39,717 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:25:39,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:25:39,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:25:39,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:25:39,717 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:25:39,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:25:39,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:25:39,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:25:39,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:25:39,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:25:39,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:25:39,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:25:39,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:25:39,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:25:39,719 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 -> false [2020-08-18 15:25:39,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:25:40,008 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:25:40,011 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:25:40,013 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:25:40,013 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:25:40,014 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-18 15:25:40,080 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b92c110a4/ebc9e4ab7777440aaa8bedc1c5accf8d/FLAG3e66ea26c [2020-08-18 15:25:40,530 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:25:40,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-18 15:25:40,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b92c110a4/ebc9e4ab7777440aaa8bedc1c5accf8d/FLAG3e66ea26c [2020-08-18 15:25:40,907 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b92c110a4/ebc9e4ab7777440aaa8bedc1c5accf8d [2020-08-18 15:25:40,915 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:25:40,916 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:25:40,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:25:40,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:25:40,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:25:40,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:25:40" (1/1) ... [2020-08-18 15:25:40,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3210105d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:40, skipping insertion in model container [2020-08-18 15:25:40,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:25:40" (1/1) ... [2020-08-18 15:25:40,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:25:40,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:25:41,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:25:41,292 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:25:41,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:25:41,381 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:25:41,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:41 WrapperNode [2020-08-18 15:25:41,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:25:41,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:25:41,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:25:41,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:25:41,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:41" (1/1) ... [2020-08-18 15:25:41,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:41" (1/1) ... [2020-08-18 15:25:41,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:41" (1/1) ... [2020-08-18 15:25:41,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:41" (1/1) ... [2020-08-18 15:25:41,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:41" (1/1) ... [2020-08-18 15:25:41,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:41" (1/1) ... [2020-08-18 15:25:41,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:41" (1/1) ... [2020-08-18 15:25:41,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:25:41,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:25:41,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:25:41,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:25:41,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:41" (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 [2020-08-18 15:25:41,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:25:41,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:25:41,513 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-18 15:25:41,513 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-18 15:25:41,513 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-18 15:25:41,513 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:25:41,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:25:41,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-18 15:25:41,514 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-18 15:25:41,514 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-18 15:25:41,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 15:25:41,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 15:25:41,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 15:25:41,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 15:25:41,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 15:25:41,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 15:25:41,515 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-18 15:25:41,515 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:25:41,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:25:41,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-18 15:25:41,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:25:42,210 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:25:42,211 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-18 15:25:42,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:25:42 BoogieIcfgContainer [2020-08-18 15:25:42,216 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:25:42,218 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:25:42,218 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:25:42,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:25:42,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:25:40" (1/3) ... [2020-08-18 15:25:42,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df29fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:25:42, skipping insertion in model container [2020-08-18 15:25:42,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:41" (2/3) ... [2020-08-18 15:25:42,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df29fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:25:42, skipping insertion in model container [2020-08-18 15:25:42,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:25:42" (3/3) ... [2020-08-18 15:25:42,231 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-08-18 15:25:42,242 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:25:42,251 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 15:25:42,262 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 15:25:42,287 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:25:42,288 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:25:42,288 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:25:42,288 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:25:42,288 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:25:42,288 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:25:42,289 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:25:42,289 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:25:42,309 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-18 15:25:42,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 15:25:42,317 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:25:42,318 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] [2020-08-18 15:25:42,318 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:25:42,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:25:42,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-08-18 15:25:42,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:25:42,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75385868] [2020-08-18 15:25:42,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:25:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:42,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:25:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:42,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:25:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:42,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 15:25:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:42,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:25:42,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75385868] [2020-08-18 15:25:42,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:25:42,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 15:25:42,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054210514] [2020-08-18 15:25:42,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 15:25:42,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:25:42,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 15:25:42,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:25:42,640 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-08-18 15:25:42,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:25:42,981 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-08-18 15:25:42,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 15:25:42,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-18 15:25:42,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:25:42,993 INFO L225 Difference]: With dead ends: 138 [2020-08-18 15:25:42,994 INFO L226 Difference]: Without dead ends: 68 [2020-08-18 15:25:42,998 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 [2020-08-18 15:25:43,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-18 15:25:43,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-18 15:25:43,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-18 15:25:43,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-08-18 15:25:43,042 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-08-18 15:25:43,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:25:43,042 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-08-18 15:25:43,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 15:25:43,043 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-08-18 15:25:43,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 15:25:43,044 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:25:43,044 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] [2020-08-18 15:25:43,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:25:43,045 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:25:43,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:25:43,045 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-08-18 15:25:43,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:25:43,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844782255] [2020-08-18 15:25:43,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:25:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 15:25:43,151 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 15:25:43,151 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 15:25:43,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:25:43,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 03:25:43 BoogieIcfgContainer [2020-08-18 15:25:43,184 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 15:25:43,187 INFO L168 Benchmark]: Toolchain (without parser) took 2269.25 ms. Allocated memory was 145.8 MB in the beginning and 234.9 MB in the end (delta: 89.1 MB). Free memory was 103.8 MB in the beginning and 189.9 MB in the end (delta: -86.1 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-08-18 15:25:43,189 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 145.8 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 15:25:43,191 INFO L168 Benchmark]: CACSL2BoogieTranslator took 464.73 ms. Allocated memory was 145.8 MB in the beginning and 205.0 MB in the end (delta: 59.2 MB). Free memory was 103.6 MB in the beginning and 179.7 MB in the end (delta: -76.1 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-08-18 15:25:43,192 INFO L168 Benchmark]: Boogie Preprocessor took 68.61 ms. Allocated memory is still 205.0 MB. Free memory was 179.7 MB in the beginning and 177.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-18 15:25:43,193 INFO L168 Benchmark]: RCFGBuilder took 765.45 ms. Allocated memory is still 205.0 MB. Free memory was 177.0 MB in the beginning and 140.5 MB in the end (delta: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. [2020-08-18 15:25:43,194 INFO L168 Benchmark]: TraceAbstraction took 965.67 ms. Allocated memory was 205.0 MB in the beginning and 234.9 MB in the end (delta: 29.9 MB). Free memory was 139.8 MB in the beginning and 189.9 MB in the end (delta: -50.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 15:25:43,206 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 145.8 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 464.73 ms. Allocated memory was 145.8 MB in the beginning and 205.0 MB in the end (delta: 59.2 MB). Free memory was 103.6 MB in the beginning and 179.7 MB in the end (delta: -76.1 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 68.61 ms. Allocated memory is still 205.0 MB. Free memory was 179.7 MB in the beginning and 177.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 765.45 ms. Allocated memory is still 205.0 MB. Free memory was 177.0 MB in the beginning and 140.5 MB in the end (delta: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 965.67 ms. Allocated memory was 205.0 MB in the beginning and 234.9 MB in the end (delta: 29.9 MB). Free memory was 139.8 MB in the beginning and 189.9 MB in the end (delta: -50.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 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, 0.2s 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, 0.1s 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...