/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1011a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:17:22,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:17:22,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:17:22,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:17:22,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:17:22,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:17:22,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:17:22,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:17:22,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:17:22,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:17:22,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:17:22,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:17:22,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:17:22,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:17:22,441 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:17:22,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:17:22,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:17:22,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:17:22,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:17:22,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:17:22,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:17:22,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:17:22,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:17:22,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:17:22,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:17:22,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:17:22,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:17:22,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:17:22,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:17:22,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:17:22,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:17:22,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:17:22,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:17:22,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:17:22,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:17:22,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:17:22,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:17:22,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:17:22,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:17:22,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:17:22,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:17:22,464 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 17:17:22,498 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:17:22,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:17:22,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:17:22,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:17:22,505 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:17:22,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:17:22,505 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:17:22,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:17:22,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:17:22,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:17:22,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:17:22,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:17:22,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:17:22,507 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:17:22,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:17:22,509 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:17:22,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:17:22,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:17:22,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:17:22,510 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:17:22,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:17:22,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:17:22,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:17:22,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:17:22,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:17:22,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:17:22,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:17:22,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:17:22,512 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:17:22,513 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-08-21 17:17:22,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:17:22,827 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:17:22,830 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:17:22,832 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:17:22,833 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:17:22,833 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1011a.c [2020-08-21 17:17:22,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72b1ceb64/acbb2067d029471995bc3f42fd9d4cf7/FLAGa4a9ad781 [2020-08-21 17:17:23,335 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:17:23,335 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1011a.c [2020-08-21 17:17:23,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72b1ceb64/acbb2067d029471995bc3f42fd9d4cf7/FLAGa4a9ad781 [2020-08-21 17:17:23,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72b1ceb64/acbb2067d029471995bc3f42fd9d4cf7 [2020-08-21 17:17:23,722 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:17:23,724 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:17:23,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:17:23,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:17:23,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:17:23,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:17:23" (1/1) ... [2020-08-21 17:17:23,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e11f4a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:23, skipping insertion in model container [2020-08-21 17:17:23,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:17:23" (1/1) ... [2020-08-21 17:17:23,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:17:23,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:17:24,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:17:24,010 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:17:24,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:17:24,141 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:17:24,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:24 WrapperNode [2020-08-21 17:17:24,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:17:24,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:17:24,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:17:24,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:17:24,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:24" (1/1) ... [2020-08-21 17:17:24,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:24" (1/1) ... [2020-08-21 17:17:24,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:24" (1/1) ... [2020-08-21 17:17:24,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:24" (1/1) ... [2020-08-21 17:17:24,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:24" (1/1) ... [2020-08-21 17:17:24,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:24" (1/1) ... [2020-08-21 17:17:24,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:24" (1/1) ... [2020-08-21 17:17:24,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:17:24,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:17:24,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:17:24,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:17:24,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:17:24,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:17:24,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:17:24,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-21 17:17:24,258 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-08-21 17:17:24,258 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:17:24,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:17:24,259 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-21 17:17:24,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:17:24,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 17:17:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:17:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:17:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-08-21 17:17:24,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:17:24,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 17:17:24,262 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:17:24,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:17:24,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:17:24,532 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:17:24,533 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-21 17:17:24,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:17:24 BoogieIcfgContainer [2020-08-21 17:17:24,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:17:24,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:17:24,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:17:24,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:17:24,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:17:23" (1/3) ... [2020-08-21 17:17:24,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765fd5c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:17:24, skipping insertion in model container [2020-08-21 17:17:24,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:24" (2/3) ... [2020-08-21 17:17:24,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765fd5c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:17:24, skipping insertion in model container [2020-08-21 17:17:24,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:17:24" (3/3) ... [2020-08-21 17:17:24,551 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1011a.c [2020-08-21 17:17:24,564 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:17:24,586 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:17:24,620 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:17:24,671 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:17:24,671 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:17:24,672 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:17:24,672 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:17:24,672 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:17:24,672 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:17:24,672 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:17:24,672 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:17:24,692 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-08-21 17:17:24,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 17:17:24,697 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:17:24,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:17:24,699 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:17:24,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:17:24,704 INFO L82 PathProgramCache]: Analyzing trace with hash -2010282984, now seen corresponding path program 1 times [2020-08-21 17:17:24,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:17:24,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205853457] [2020-08-21 17:17:24,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:17:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:24,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:17:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:24,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:17:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:24,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:17:24,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205853457] [2020-08-21 17:17:24,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:17:24,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:17:24,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017876558] [2020-08-21 17:17:24,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:17:24,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:17:24,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:17:24,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:17:24,931 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 4 states. [2020-08-21 17:17:25,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:17:25,199 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2020-08-21 17:17:25,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 17:17:25,202 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-08-21 17:17:25,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:17:25,212 INFO L225 Difference]: With dead ends: 56 [2020-08-21 17:17:25,212 INFO L226 Difference]: Without dead ends: 28 [2020-08-21 17:17:25,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:17:25,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-21 17:17:25,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-08-21 17:17:25,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-21 17:17:25,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-08-21 17:17:25,263 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 17 [2020-08-21 17:17:25,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:17:25,264 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-08-21 17:17:25,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:17:25,264 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-08-21 17:17:25,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 17:17:25,266 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:17:25,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:17:25,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:17:25,267 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:17:25,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:17:25,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1410255941, now seen corresponding path program 1 times [2020-08-21 17:17:25,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:17:25,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501028858] [2020-08-21 17:17:25,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:17:25,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 17:17:25,353 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 17:17:25,353 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 17:17:25,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:17:25,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:17:25 BoogieIcfgContainer [2020-08-21 17:17:25,382 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 17:17:25,386 INFO L168 Benchmark]: Toolchain (without parser) took 1661.16 ms. Allocated memory was 141.0 MB in the beginning and 202.4 MB in the end (delta: 61.3 MB). Free memory was 103.7 MB in the beginning and 122.7 MB in the end (delta: -19.1 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2020-08-21 17:17:25,389 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-08-21 17:17:25,391 INFO L168 Benchmark]: CACSL2BoogieTranslator took 414.30 ms. Allocated memory was 141.0 MB in the beginning and 202.4 MB in the end (delta: 61.3 MB). Free memory was 103.7 MB in the beginning and 181.0 MB in the end (delta: -77.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-08-21 17:17:25,392 INFO L168 Benchmark]: Boogie Preprocessor took 49.21 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 178.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-21 17:17:25,394 INFO L168 Benchmark]: RCFGBuilder took 347.58 ms. Allocated memory is still 202.4 MB. Free memory was 178.8 MB in the beginning and 161.1 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. [2020-08-21 17:17:25,395 INFO L168 Benchmark]: TraceAbstraction took 840.93 ms. Allocated memory is still 202.4 MB. Free memory was 160.1 MB in the beginning and 122.7 MB in the end (delta: 37.4 MB). Peak memory consumption was 37.4 MB. Max. memory is 7.1 GB. [2020-08-21 17:17:25,407 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 414.30 ms. Allocated memory was 141.0 MB in the beginning and 202.4 MB in the end (delta: 61.3 MB). Free memory was 103.7 MB in the beginning and 181.0 MB in the end (delta: -77.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 49.21 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 178.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 347.58 ms. Allocated memory is still 202.4 MB. Free memory was 178.8 MB in the beginning and 161.1 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 840.93 ms. Allocated memory is still 202.4 MB. Free memory was 160.1 MB in the beginning and 122.7 MB in the end (delta: 37.4 MB). Peak memory consumption was 37.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 52]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 51, overapproximation of bitwiseAnd at line 35. Possible FailurePath: [L47] double x = 0.0; [L48] CALL, EXPR fabs_double(x) [L26] __uint32_t high; [L28] ieee_double_shape_type gh_u; [L29] gh_u.value = (x) [L30] EXPR gh_u.parts.msw [L30] (high) = gh_u.parts.msw [L33] ieee_double_shape_type sh_u; [L34] sh_u.value = (x) [L35] sh_u.parts.msw = (high & 0x7fffffff) [L36] EXPR sh_u.value [L36] (x) = sh_u.value [L38] return x; [L48] RET, EXPR fabs_double(x) [L48] double res = fabs_double(x); [L51] EXPR res == 0.0 && __signbit_double(res) == 0 [L51] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L52] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 21 SDslu, 5 SDs, 0 SdLazy, 31 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 592 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...