/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_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:47:13,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:47:13,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:47:13,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:47:13,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:47:13,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:47:13,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:47:13,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:47:13,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:47:13,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:47:13,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:47:13,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:47:13,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:47:13,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:47:13,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:47:13,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:47:13,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:47:13,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:47:13,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:47:13,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:47:13,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:47:13,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:47:13,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:47:13,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:47:13,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 21:47:13,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 21:47:13,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 21:47:13,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 21:47:13,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 21:47:13,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 21:47:13,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 21:47:13,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 21:47:13,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 21:47:13,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 21:47:13,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 21:47:13,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 21:47:13,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 21:47:13,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 21:47:13,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:47:13,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:47:13,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:47:13,367 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 [2020-08-27 21:47:13,394 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:47:13,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:47:13,396 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:47:13,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:47:13,396 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:47:13,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:47:13,397 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:47:13,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:47:13,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:47:13,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:47:13,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:47:13,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:47:13,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:47:13,398 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:47:13,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:47:13,400 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:47:13,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:47:13,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:47:13,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:47:13,401 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:47:13,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:47:13,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:47:13,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:47:13,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:47:13,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:47:13,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:47:13,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:47:13,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:47:13,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:47:13,403 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 [2020-08-27 21:47:13,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:47:13,993 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:47:13,999 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:47:14,002 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:47:14,003 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:47:14,005 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-27 21:47:14,082 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13a8d1c4d/de6d1c8f0ac8489482987d9abee2bb6f/FLAG0e57bae5e [2020-08-27 21:47:14,691 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:47:14,692 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-27 21:47:14,705 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13a8d1c4d/de6d1c8f0ac8489482987d9abee2bb6f/FLAG0e57bae5e [2020-08-27 21:47:14,948 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13a8d1c4d/de6d1c8f0ac8489482987d9abee2bb6f [2020-08-27 21:47:14,966 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:47:14,969 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:47:14,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:47:14,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:47:14,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:47:14,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:47:14" (1/1) ... [2020-08-27 21:47:14,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4147c445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:14, skipping insertion in model container [2020-08-27 21:47:14,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:47:14" (1/1) ... [2020-08-27 21:47:14,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:47:15,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:47:15,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:47:15,332 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:47:15,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:47:15,503 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:47:15,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:15 WrapperNode [2020-08-27 21:47:15,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:47:15,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:47:15,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:47:15,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:47:15,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:15" (1/1) ... [2020-08-27 21:47:15,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:15" (1/1) ... [2020-08-27 21:47:15,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:15" (1/1) ... [2020-08-27 21:47:15,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:15" (1/1) ... [2020-08-27 21:47:15,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:15" (1/1) ... [2020-08-27 21:47:15,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:15" (1/1) ... [2020-08-27 21:47:15,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:15" (1/1) ... [2020-08-27 21:47:15,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:47:15,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:47:15,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:47:15,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:47:15,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:15" (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 [2020-08-27 21:47:15,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:47:15,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:47:15,649 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-27 21:47:15,649 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-27 21:47:15,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-27 21:47:15,649 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:47:15,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:47:15,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-27 21:47:15,650 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-27 21:47:15,650 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-27 21:47:15,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 21:47:15,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-27 21:47:15,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-27 21:47:15,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 21:47:15,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-27 21:47:15,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-27 21:47:15,651 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-27 21:47:15,652 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:47:15,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:47:15,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-27 21:47:15,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:47:16,288 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:47:16,289 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-27 21:47:16,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:47:16 BoogieIcfgContainer [2020-08-27 21:47:16,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:47:16,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:47:16,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:47:16,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:47:16,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:47:14" (1/3) ... [2020-08-27 21:47:16,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d9a7ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:47:16, skipping insertion in model container [2020-08-27 21:47:16,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:15" (2/3) ... [2020-08-27 21:47:16,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d9a7ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:47:16, skipping insertion in model container [2020-08-27 21:47:16,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:47:16" (3/3) ... [2020-08-27 21:47:16,305 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-08-27 21:47:16,318 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:47:16,330 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:47:16,351 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:47:16,380 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:47:16,380 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:47:16,380 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:47:16,380 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:47:16,380 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:47:16,380 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:47:16,381 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:47:16,381 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:47:16,404 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-08-27 21:47:16,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-27 21:47:16,413 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:47:16,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:47:16,415 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:47:16,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:47:16,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-08-27 21:47:16,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:47:16,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070497886] [2020-08-27 21:47:16,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:47:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:16,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:47:16,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:16,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-27 21:47:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:16,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:47:16,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070497886] [2020-08-27 21:47:16,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:47:16,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 21:47:16,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549145952] [2020-08-27 21:47:16,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 21:47:16,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:47:16,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 21:47:16,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:47:16,776 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-08-27 21:47:17,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:47:17,150 INFO L93 Difference]: Finished difference Result 142 states and 232 transitions. [2020-08-27 21:47:17,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-27 21:47:17,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-27 21:47:17,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:47:17,167 INFO L225 Difference]: With dead ends: 142 [2020-08-27 21:47:17,167 INFO L226 Difference]: Without dead ends: 69 [2020-08-27 21:47:17,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-27 21:47:17,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-27 21:47:17,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-08-27 21:47:17,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-27 21:47:17,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-08-27 21:47:17,273 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-08-27 21:47:17,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:47:17,274 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-08-27 21:47:17,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 21:47:17,274 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-08-27 21:47:17,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-27 21:47:17,278 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:47:17,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:47:17,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:47:17,279 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:47:17,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:47:17,280 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-08-27 21:47:17,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:47:17,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305325546] [2020-08-27 21:47:17,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:47:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-27 21:47:17,397 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-27 21:47:17,397 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-27 21:47:17,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:47:17,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 09:47:17 BoogieIcfgContainer [2020-08-27 21:47:17,424 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-27 21:47:17,427 INFO L168 Benchmark]: Toolchain (without parser) took 2457.80 ms. Allocated memory was 137.4 MB in the beginning and 229.1 MB in the end (delta: 91.8 MB). Free memory was 100.7 MB in the beginning and 191.9 MB in the end (delta: -91.2 MB). Peak memory consumption was 584.6 kB. Max. memory is 7.1 GB. [2020-08-27 21:47:17,428 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-27 21:47:17,430 INFO L168 Benchmark]: CACSL2BoogieTranslator took 534.31 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 100.5 MB in the beginning and 174.7 MB in the end (delta: -74.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:17,431 INFO L168 Benchmark]: Boogie Preprocessor took 67.85 ms. Allocated memory is still 199.8 MB. Free memory was 174.7 MB in the beginning and 171.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:17,431 INFO L168 Benchmark]: RCFGBuilder took 722.19 ms. Allocated memory is still 199.8 MB. Free memory was 171.9 MB in the beginning and 135.5 MB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:17,432 INFO L168 Benchmark]: TraceAbstraction took 1127.79 ms. Allocated memory was 199.8 MB in the beginning and 229.1 MB in the end (delta: 29.4 MB). Free memory was 135.5 MB in the beginning and 191.9 MB in the end (delta: -56.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-27 21:47:17,436 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 534.31 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 100.5 MB in the beginning and 174.7 MB in the end (delta: -74.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.85 ms. Allocated memory is still 199.8 MB. Free memory was 174.7 MB in the beginning and 171.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 722.19 ms. Allocated memory is still 199.8 MB. Free memory was 171.9 MB in the beginning and 135.5 MB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1127.79 ms. Allocated memory was 199.8 MB in the beginning and 229.1 MB in the end (delta: 29.4 MB). Free memory was 135.5 MB in the beginning and 191.9 MB in the end (delta: -56.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 [L187] CALL, EXPR fmod_double(x, y) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); [L187] RET, EXPR fmod_double(x, y) [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 14 SDslu, 85 SDs, 0 SdLazy, 104 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 918 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...