/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:20:16,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:20:16,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:20:16,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:20:16,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:20:16,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:20:16,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:20:16,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:20:16,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:20:16,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:20:16,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:20:16,642 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:20:16,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:20:16,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:20:16,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:20:16,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:20:16,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:20:16,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:20:16,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:20:16,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:20:16,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:20:16,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:20:16,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:20:16,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:20:16,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:20:16,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:20:16,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:20:16,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:20:16,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:20:16,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:20:16,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:20:16,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:20:16,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:20:16,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:20:16,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:20:16,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:20:16,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:20:16,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:20:16,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:20:16,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:20:16,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:20:16,702 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 04:20:16,746 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:20:16,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:20:16,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:20:16,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:20:16,749 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:20:16,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:20:16,749 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:20:16,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:20:16,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:20:16,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:20:16,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:20:16,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:20:16,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:20:16,753 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:20:16,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:20:16,754 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:20:16,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:20:16,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:20:16,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:20:16,755 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:20:16,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:20:16,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:20:16,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:20:16,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:20:16,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:20:16,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:20:16,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:20:16,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:20:16,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:20:16,756 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:20:17,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:20:17,100 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:20:17,105 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:20:17,107 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:20:17,108 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:20:17,109 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-08-19 04:20:17,175 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85b6b246f/03b98841d25545cb84e38039aaf3a1a1/FLAGfbf7c1550 [2020-08-19 04:20:17,715 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:20:17,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-08-19 04:20:17,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85b6b246f/03b98841d25545cb84e38039aaf3a1a1/FLAGfbf7c1550 [2020-08-19 04:20:18,036 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85b6b246f/03b98841d25545cb84e38039aaf3a1a1 [2020-08-19 04:20:18,047 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:20:18,049 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:20:18,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:20:18,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:20:18,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:20:18,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:20:18" (1/1) ... [2020-08-19 04:20:18,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d96e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:18, skipping insertion in model container [2020-08-19 04:20:18,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:20:18" (1/1) ... [2020-08-19 04:20:18,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:20:18,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:20:18,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:20:18,471 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:20:18,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:20:18,589 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:20:18,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:18 WrapperNode [2020-08-19 04:20:18,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:20:18,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:20:18,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:20:18,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:20:18,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:18" (1/1) ... [2020-08-19 04:20:18,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:18" (1/1) ... [2020-08-19 04:20:18,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:18" (1/1) ... [2020-08-19 04:20:18,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:18" (1/1) ... [2020-08-19 04:20:18,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:18" (1/1) ... [2020-08-19 04:20:18,651 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:18" (1/1) ... [2020-08-19 04:20:18,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:18" (1/1) ... [2020-08-19 04:20:18,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:20:18,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:20:18,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:20:18,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:20:18,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:20:18,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:20:18,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:20:18,720 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-19 04:20:18,720 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-19 04:20:18,721 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:20:18,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:20:18,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-19 04:20:18,721 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-19 04:20:18,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:20:18,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 04:20:18,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:20:18,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:20:18,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 04:20:18,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:20:18,722 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-19 04:20:18,723 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:20:18,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:20:18,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-19 04:20:18,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:20:19,417 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:20:19,417 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-19 04:20:19,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:20:19 BoogieIcfgContainer [2020-08-19 04:20:19,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:20:19,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:20:19,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:20:19,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:20:19,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:20:18" (1/3) ... [2020-08-19 04:20:19,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a212ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:20:19, skipping insertion in model container [2020-08-19 04:20:19,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:18" (2/3) ... [2020-08-19 04:20:19,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a212ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:20:19, skipping insertion in model container [2020-08-19 04:20:19,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:20:19" (3/3) ... [2020-08-19 04:20:19,442 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-08-19 04:20:19,453 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:20:19,462 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:20:19,475 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:20:19,495 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:20:19,495 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:20:19,495 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:20:19,496 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:20:19,496 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:20:19,496 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:20:19,496 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:20:19,496 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:20:19,516 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-19 04:20:19,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-19 04:20:19,524 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:20:19,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:20:19,526 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:20:19,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:20:19,533 INFO L82 PathProgramCache]: Analyzing trace with hash -759211570, now seen corresponding path program 1 times [2020-08-19 04:20:19,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:20:19,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637521286] [2020-08-19 04:20:19,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:20:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:20:19,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:20:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:20:19,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:20:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:20:19,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 04:20:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:20:19,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:20:19,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637521286] [2020-08-19 04:20:19,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:20:19,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:20:19,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938569100] [2020-08-19 04:20:19,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:20:19,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:20:19,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:20:19,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:20:19,816 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-08-19 04:20:20,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:20:20,175 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-08-19 04:20:20,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:20:20,177 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-19 04:20:20,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:20:20,188 INFO L225 Difference]: With dead ends: 138 [2020-08-19 04:20:20,189 INFO L226 Difference]: Without dead ends: 68 [2020-08-19 04:20:20,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:20:20,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-19 04:20:20,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-19 04:20:20,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-19 04:20:20,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-08-19 04:20:20,239 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-08-19 04:20:20,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:20:20,240 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-08-19 04:20:20,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:20:20,240 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-08-19 04:20:20,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 04:20:20,242 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:20:20,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:20:20,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:20:20,243 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:20:20,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:20:20,243 INFO L82 PathProgramCache]: Analyzing trace with hash -775583586, now seen corresponding path program 1 times [2020-08-19 04:20:20,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:20:20,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12928487] [2020-08-19 04:20:20,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:20:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 04:20:20,360 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 04:20:20,360 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 04:20:20,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:20:20,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:20:20 BoogieIcfgContainer [2020-08-19 04:20:20,386 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:20:20,389 INFO L168 Benchmark]: Toolchain (without parser) took 2339.52 ms. Allocated memory was 142.6 MB in the beginning and 233.8 MB in the end (delta: 91.2 MB). Free memory was 104.0 MB in the beginning and 185.8 MB in the end (delta: -81.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:20,390 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 142.6 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 04:20:20,391 INFO L168 Benchmark]: CACSL2BoogieTranslator took 538.16 ms. Allocated memory was 142.6 MB in the beginning and 203.9 MB in the end (delta: 61.3 MB). Free memory was 103.8 MB in the beginning and 178.6 MB in the end (delta: -74.7 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:20,392 INFO L168 Benchmark]: Boogie Preprocessor took 67.44 ms. Allocated memory is still 203.9 MB. Free memory was 178.6 MB in the beginning and 176.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:20,393 INFO L168 Benchmark]: RCFGBuilder took 768.63 ms. Allocated memory is still 203.9 MB. Free memory was 176.1 MB in the beginning and 140.5 MB in the end (delta: 35.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:20,394 INFO L168 Benchmark]: TraceAbstraction took 954.74 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 139.9 MB in the beginning and 185.8 MB in the end (delta: -45.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 04:20:20,398 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 142.6 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 538.16 ms. Allocated memory was 142.6 MB in the beginning and 203.9 MB in the end (delta: 61.3 MB). Free memory was 103.8 MB in the beginning and 178.6 MB in the end (delta: -74.7 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.44 ms. Allocated memory is still 203.9 MB. Free memory was 178.6 MB in the beginning and 176.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 768.63 ms. Allocated memory is still 203.9 MB. Free memory was 176.1 MB in the beginning and 140.5 MB in the end (delta: 35.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 954.74 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 139.9 MB in the beginning and 185.8 MB in the end (delta: -45.9 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 186]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someUnaryDOUBLEoperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 36, overapproximation of someBinaryDOUBLEComparisonOperation at line 185, overapproximation of bitwiseXor at line 37. Possible FailurePath: [L15-L18] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L177] double y = -1.0 / 0.0; [L178] double x = __VERIFIER_nondet_double(); [L180] CALL isfinite_double(x) [L161] __int32_t hx; [L163] ieee_double_shape_type gh_u; [L164] gh_u.value = (x) [L165] EXPR gh_u.parts.msw [L165] (hx) = gh_u.parts.msw [L167] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L180] RET isfinite_double(x) [L180] COND TRUE isfinite_double(x) [L182] CALL, EXPR fmod_double(x, y) [L21] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L22] __uint32_t lx, ly, lz; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (hx) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lx) = ew_u.parts.lsw [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (y) [L33] EXPR ew_u.parts.msw [L33] (hy) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ly) = ew_u.parts.lsw [L36] sx = hx & 0x80000000 [L37] hx ^= sx [L38] hy &= 0x7fffffff [L40-L41] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L42] return (x * y) / (x * y); [L182] RET, EXPR fmod_double(x, y) [L182] double res = fmod_double(x, y); [L185] COND TRUE res != x [L186] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 73 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...