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 -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1072c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:44:56,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:44:56,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:44:56,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 01:44:56,777 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 01:44:56,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 01:44:56,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 01:44:56,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 01:44:56,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 01:44:56,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 01:44:56,785 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 01:44:56,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 01:44:56,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:44:56,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:44:56,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:44:56,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:44:56,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:44:56,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:44:56,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:44:56,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:44:56,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:44:56,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:44:56,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:44:56,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:44:56,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-10 01:44:56,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:44:56,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:44:56,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:44:56,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:44:56,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:44:56,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:44:56,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:44:56,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:44:56,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:44:56,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:44:56,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:44:56,815 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 01:44:56,835 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:44:56,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:44:56,836 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:44:56,836 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:44:56,837 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:44:56,837 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:44:56,837 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:44:56,837 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:44:56,838 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:44:56,838 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:44:56,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:44:56,840 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:44:56,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:44:56,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:44:56,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:44:56,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:44:56,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:44:56,842 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:44:56,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:44:56,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:44:56,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:44:56,843 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:44:56,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:44:56,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:44:56,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:44:56,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:44:56,844 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:44:56,844 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:44:56,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:44:56,845 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:44:56,890 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:44:56,909 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:44:56,915 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:44:56,917 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:44:56,917 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:44:56,918 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1072c.c [2019-09-10 01:44:56,987 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e9289c18/f341529ccc824807aa6b9570b70320c8/FLAG9077d106c [2019-09-10 01:44:57,456 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:44:57,458 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1072c.c [2019-09-10 01:44:57,468 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e9289c18/f341529ccc824807aa6b9570b70320c8/FLAG9077d106c [2019-09-10 01:44:57,838 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e9289c18/f341529ccc824807aa6b9570b70320c8 [2019-09-10 01:44:57,846 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:44:57,847 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:44:57,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:44:57,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:44:57,852 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:44:57,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:44:57" (1/1) ... [2019-09-10 01:44:57,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66af5a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:57, skipping insertion in model container [2019-09-10 01:44:57,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:44:57" (1/1) ... [2019-09-10 01:44:57,863 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:44:57,882 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:44:58,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:44:58,092 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:44:58,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:44:58,222 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:44:58,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:58 WrapperNode [2019-09-10 01:44:58,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:44:58,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:44:58,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:44:58,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:44:58,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:58" (1/1) ... [2019-09-10 01:44:58,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:58" (1/1) ... [2019-09-10 01:44:58,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:58" (1/1) ... [2019-09-10 01:44:58,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:58" (1/1) ... [2019-09-10 01:44:58,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:58" (1/1) ... [2019-09-10 01:44:58,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:58" (1/1) ... [2019-09-10 01:44:58,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:58" (1/1) ... [2019-09-10 01:44:58,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:44:58,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:44:58,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:44:58,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:44:58,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-09-10 01:44:58,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:44:58,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:44:58,333 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_float [2019-09-10 01:44:58,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2019-09-10 01:44:58,333 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:44:58,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:44:58,334 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_float [2019-09-10 01:44:58,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 01:44:58,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-10 01:44:58,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:44:58,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:44:58,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:44:58,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-10 01:44:58,335 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2019-09-10 01:44:58,335 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:44:58,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:44:58,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:44:58,714 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:44:58,715 INFO L283 CfgBuilder]: Removed 8 assume(true) statements. [2019-09-10 01:44:58,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:44:58 BoogieIcfgContainer [2019-09-10 01:44:58,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:44:58,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:44:58,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:44:58,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:44:58,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:44:57" (1/3) ... [2019-09-10 01:44:58,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52bde727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:44:58, skipping insertion in model container [2019-09-10 01:44:58,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:58" (2/3) ... [2019-09-10 01:44:58,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52bde727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:44:58, skipping insertion in model container [2019-09-10 01:44:58,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:44:58" (3/3) ... [2019-09-10 01:44:58,723 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1072c.c [2019-09-10 01:44:58,731 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:44:58,738 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:44:58,755 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:44:58,780 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:44:58,780 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:44:58,780 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:44:58,780 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:44:58,780 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:44:58,780 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:44:58,781 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:44:58,781 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:44:58,795 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-09-10 01:44:58,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-10 01:44:58,805 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:44:58,806 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:44:58,808 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:44:58,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:44:58,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1563254329, now seen corresponding path program 1 times [2019-09-10 01:44:58,816 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:44:58,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:44:58,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:44:58,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:44:58,862 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:44:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:44:58,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:44:58,943 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:44:58,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 01:44:58,943 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:44:58,947 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:44:58,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:44:58,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:44:58,961 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2019-09-10 01:44:58,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:44:58,975 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2019-09-10 01:44:58,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:44:58,977 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-09-10 01:44:58,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:44:58,986 INFO L225 Difference]: With dead ends: 36 [2019-09-10 01:44:58,986 INFO L226 Difference]: Without dead ends: 32 [2019-09-10 01:44:58,988 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:44:59,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-09-10 01:44:59,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-09-10 01:44:59,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-09-10 01:44:59,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2019-09-10 01:44:59,029 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 18 [2019-09-10 01:44:59,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:44:59,030 INFO L475 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2019-09-10 01:44:59,030 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:44:59,030 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2019-09-10 01:44:59,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-10 01:44:59,031 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:44:59,031 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:44:59,031 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:44:59,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:44:59,032 INFO L82 PathProgramCache]: Analyzing trace with hash 40205450, now seen corresponding path program 1 times [2019-09-10 01:44:59,032 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:44:59,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:44:59,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:44:59,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:44:59,034 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:44:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:44:59,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:44:59,245 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:44:59,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 01:44:59,246 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:44:59,247 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 01:44:59,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 01:44:59,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-10 01:44:59,249 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 7 states. [2019-09-10 01:44:59,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:44:59,413 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2019-09-10 01:44:59,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 01:44:59,414 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2019-09-10 01:44:59,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:44:59,417 INFO L225 Difference]: With dead ends: 38 [2019-09-10 01:44:59,417 INFO L226 Difference]: Without dead ends: 38 [2019-09-10 01:44:59,418 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-09-10 01:44:59,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-09-10 01:44:59,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2019-09-10 01:44:59,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-09-10 01:44:59,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2019-09-10 01:44:59,433 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 18 [2019-09-10 01:44:59,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:44:59,433 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2019-09-10 01:44:59,433 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 01:44:59,434 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2019-09-10 01:44:59,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-10 01:44:59,435 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:44:59,435 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:44:59,435 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:44:59,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:44:59,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1418057671, now seen corresponding path program 1 times [2019-09-10 01:44:59,436 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:44:59,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:44:59,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:44:59,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:44:59,437 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:44:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:44:59,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:44:59,582 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:44:59,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 01:44:59,582 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:44:59,583 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 01:44:59,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 01:44:59,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-10 01:44:59,588 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 7 states. [2019-09-10 01:44:59,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:44:59,716 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2019-09-10 01:44:59,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 01:44:59,717 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-09-10 01:44:59,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:44:59,718 INFO L225 Difference]: With dead ends: 40 [2019-09-10 01:44:59,719 INFO L226 Difference]: Without dead ends: 40 [2019-09-10 01:44:59,719 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-09-10 01:44:59,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-09-10 01:44:59,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2019-09-10 01:44:59,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-09-10 01:44:59,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2019-09-10 01:44:59,725 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 19 [2019-09-10 01:44:59,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:44:59,726 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2019-09-10 01:44:59,726 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 01:44:59,726 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2019-09-10 01:44:59,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-10 01:44:59,727 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:44:59,728 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:44:59,728 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:44:59,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:44:59,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1674720242, now seen corresponding path program 1 times [2019-09-10 01:44:59,729 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:44:59,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:44:59,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:44:59,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:44:59,730 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:44:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-10 01:44:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-10 01:44:59,865 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-10 01:44:59,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:44:59 BoogieIcfgContainer [2019-09-10 01:44:59,894 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:44:59,896 INFO L168 Benchmark]: Toolchain (without parser) took 2048.23 ms. Allocated memory was 141.0 MB in the beginning and 200.3 MB in the end (delta: 59.2 MB). Free memory was 88.6 MB in the beginning and 84.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 63.2 MB. Max. memory is 7.1 GB. [2019-09-10 01:44:59,898 INFO L168 Benchmark]: CDTParser took 1.12 ms. Allocated memory is still 141.0 MB. Free memory was 107.3 MB in the beginning and 107.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:44:59,899 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.56 ms. Allocated memory was 141.0 MB in the beginning and 200.3 MB in the end (delta: 59.2 MB). Free memory was 88.4 MB in the beginning and 177.9 MB in the end (delta: -89.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2019-09-10 01:44:59,900 INFO L168 Benchmark]: Boogie Preprocessor took 52.74 ms. Allocated memory is still 200.3 MB. Free memory was 177.9 MB in the beginning and 175.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2019-09-10 01:44:59,901 INFO L168 Benchmark]: RCFGBuilder took 440.05 ms. Allocated memory is still 200.3 MB. Free memory was 175.1 MB in the beginning and 156.2 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2019-09-10 01:44:59,902 INFO L168 Benchmark]: TraceAbstraction took 1176.94 ms. Allocated memory is still 200.3 MB. Free memory was 155.6 MB in the beginning and 84.6 MB in the end (delta: 71.0 MB). Peak memory consumption was 71.0 MB. Max. memory is 7.1 GB. [2019-09-10 01:44:59,906 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.12 ms. Allocated memory is still 141.0 MB. Free memory was 107.3 MB in the beginning and 107.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 374.56 ms. Allocated memory was 141.0 MB in the beginning and 200.3 MB in the end (delta: 59.2 MB). Free memory was 88.4 MB in the beginning and 177.9 MB in the end (delta: -89.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 52.74 ms. Allocated memory is still 200.3 MB. Free memory was 177.9 MB in the beginning and 175.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 440.05 ms. Allocated memory is still 200.3 MB. Free memory was 175.1 MB in the beginning and 156.2 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1176.94 ms. Allocated memory is still 200.3 MB. Free memory was 155.6 MB in the beginning and 84.6 MB in the end (delta: 71.0 MB). Peak memory consumption was 71.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 67]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 32, overapproximation of bitwiseAnd at line 19. Possible FailurePath: [L62] float x = 0.0f; VAL [x=0] [L63] CALL, EXPR trunc_float(x) VAL [\old(x)=0] [L13] __int32_t signbit, w, exponent_less_127; VAL [\old(x)=0, x=0] [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (w) = gf_u.word [L19] signbit = w & 0x80000000 [L20] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 VAL [\old(x)=0, exponent_less_127=0, signbit=-1, w=-2, x=0] [L21] COND TRUE exponent_less_127 < 23 VAL [\old(x)=0, exponent_less_127=0, signbit=-1, w=-2, x=0] [L22] COND FALSE !(exponent_less_127 < 0) VAL [\old(x)=0, exponent_less_127=0, signbit=-1, w=-2, x=0] [L31] ieee_float_shape_type sf_u; [L32] sf_u.word = (signbit | (w & ~(0x007fffff >> exponent_less_127))) [L33] EXPR sf_u.value [L33] (x) = sf_u.value [L40] return x; VAL [\old(x)=0, \result=4294967298, exponent_less_127=0, signbit=-1, w=-2, x=4294967298] [L63] RET, EXPR trunc_float(x) VAL [trunc_float(x)=4294967298, x=0] [L63] float res = trunc_float(x); [L66] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=4294967298, res == 0.0f && __signbit_float(res) == 0=0, x=0] [L66] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L67] __VERIFIER_error() VAL [res=4294967298, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 38 locations, 1 error locations. UNSAFE Result, 1.1s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 102 SDtfs, 28 SDslu, 254 SDs, 0 SdLazy, 75 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 2826 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...