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_1032a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:44:50,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:44:50,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:44:50,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 01:44:50,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:44:50,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:44:50,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:44:50,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:44:50,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:44:50,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:44:50,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:44:50,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:44:50,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:44:50,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:44:50,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:44:50,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:44:50,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-10 01:44:50,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:44:50,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:44:50,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:44:50,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:44:50,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:44:50,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:44:50,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:44:50,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:44:50,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:44:50,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:44:50,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:44:50,179 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 01:44:50,206 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:44:50,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:44:50,209 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:44:50,209 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:44:50,209 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:44:50,210 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:44:50,210 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:44:50,210 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:44:50,210 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:44:50,210 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:44:50,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:44:50,213 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:44:50,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:44:50,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:44:50,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:44:50,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:44:50,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:44:50,214 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:44:50,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:44:50,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:44:50,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:44:50,215 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:44:50,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:44:50,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:44:50,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:44:50,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:44:50,216 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:44:50,217 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:44:50,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:44:50,217 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:44:50,259 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:44:50,271 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:44:50,275 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:44:50,276 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:44:50,277 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:44:50,277 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1032a.c [2019-09-10 01:44:50,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8f0cdeaf/6c8cf57e6c134310b0957527f3c3a33e/FLAG127d6285e [2019-09-10 01:44:50,823 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:44:50,824 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1032a.c [2019-09-10 01:44:50,840 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8f0cdeaf/6c8cf57e6c134310b0957527f3c3a33e/FLAG127d6285e [2019-09-10 01:44:51,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8f0cdeaf/6c8cf57e6c134310b0957527f3c3a33e [2019-09-10 01:44:51,205 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:44:51,206 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:44:51,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:44:51,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:44:51,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:44:51,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:44:51" (1/1) ... [2019-09-10 01:44:51,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18829924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:51, skipping insertion in model container [2019-09-10 01:44:51,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:44:51" (1/1) ... [2019-09-10 01:44:51,224 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:44:51,243 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:44:51,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:44:51,466 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:44:51,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:44:51,616 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:44:51,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:51 WrapperNode [2019-09-10 01:44:51,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:44:51,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:44:51,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:44:51,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:44:51,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:51" (1/1) ... [2019-09-10 01:44:51,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:51" (1/1) ... [2019-09-10 01:44:51,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:51" (1/1) ... [2019-09-10 01:44:51,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:51" (1/1) ... [2019-09-10 01:44:51,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:51" (1/1) ... [2019-09-10 01:44:51,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:51" (1/1) ... [2019-09-10 01:44:51,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:51" (1/1) ... [2019-09-10 01:44:51,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:44:51,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:44:51,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:44:51,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:44:51,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:51" (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 01:44:51,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:44:51,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:44:51,722 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2019-09-10 01:44:51,723 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2019-09-10 01:44:51,723 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:44:51,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:44:51,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-09-10 01:44:51,723 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2019-09-10 01:44:51,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 01:44:51,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-10 01:44:51,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:44:51,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:44:51,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:44:51,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-10 01:44:51,724 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2019-09-10 01:44:51,724 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:44:51,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:44:51,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:44:52,082 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:44:52,082 INFO L283 CfgBuilder]: Removed 6 assume(true) statements. [2019-09-10 01:44:52,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:44:52 BoogieIcfgContainer [2019-09-10 01:44:52,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:44:52,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:44:52,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:44:52,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:44:52,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:44:51" (1/3) ... [2019-09-10 01:44:52,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537d1970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:44:52, skipping insertion in model container [2019-09-10 01:44:52,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:44:51" (2/3) ... [2019-09-10 01:44:52,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537d1970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:44:52, skipping insertion in model container [2019-09-10 01:44:52,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:44:52" (3/3) ... [2019-09-10 01:44:52,091 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032a.c [2019-09-10 01:44:52,100 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:44:52,108 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:44:52,125 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:44:52,156 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:44:52,156 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:44:52,156 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:44:52,156 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:44:52,157 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:44:52,157 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:44:52,157 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:44:52,157 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:44:52,171 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-09-10 01:44:52,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-10 01:44:52,181 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:44:52,181 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 01:44:52,183 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:44:52,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:44:52,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1474621337, now seen corresponding path program 1 times [2019-09-10 01:44:52,190 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:44:52,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:44:52,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:44:52,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:44:52,237 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:44:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:44:52,528 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 01:44:52,530 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:44:52,531 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 01:44:52,531 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:44:52,538 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 01:44:52,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 01:44:52,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-10 01:44:52,558 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 7 states. [2019-09-10 01:44:52,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:44:52,762 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2019-09-10 01:44:52,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 01:44:52,765 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2019-09-10 01:44:52,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:44:52,782 INFO L225 Difference]: With dead ends: 41 [2019-09-10 01:44:52,782 INFO L226 Difference]: Without dead ends: 37 [2019-09-10 01:44:52,787 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 01:44:52,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-09-10 01:44:52,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2019-09-10 01:44:52,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-09-10 01:44:52,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2019-09-10 01:44:52,834 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 18 [2019-09-10 01:44:52,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:44:52,835 INFO L475 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2019-09-10 01:44:52,835 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 01:44:52,835 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2019-09-10 01:44:52,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-10 01:44:52,836 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:44:52,836 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 01:44:52,837 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:44:52,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:44:52,837 INFO L82 PathProgramCache]: Analyzing trace with hash -587117656, now seen corresponding path program 1 times [2019-09-10 01:44:52,838 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:44:52,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:44:52,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:44:52,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:44:52,839 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:44:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:44:53,003 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 01:44:53,004 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:44:53,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 01:44:53,005 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:44:53,006 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 01:44:53,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 01:44:53,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-10 01:44:53,009 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 7 states. [2019-09-10 01:44:53,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:44:53,152 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2019-09-10 01:44:53,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 01:44:53,153 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2019-09-10 01:44:53,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:44:53,155 INFO L225 Difference]: With dead ends: 39 [2019-09-10 01:44:53,156 INFO L226 Difference]: Without dead ends: 39 [2019-09-10 01:44:53,157 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 01:44:53,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-09-10 01:44:53,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2019-09-10 01:44:53,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-09-10 01:44:53,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2019-09-10 01:44:53,171 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 18 [2019-09-10 01:44:53,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:44:53,172 INFO L475 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2019-09-10 01:44:53,172 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 01:44:53,172 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2019-09-10 01:44:53,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-09-10 01:44:53,174 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:44:53,175 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, 1] [2019-09-10 01:44:53,176 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:44:53,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:44:53,177 INFO L82 PathProgramCache]: Analyzing trace with hash -359996179, now seen corresponding path program 1 times [2019-09-10 01:44:53,178 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:44:53,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:44:53,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:44:53,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:44:53,180 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:44:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-10 01:44:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-10 01:44:53,268 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-10 01:44:53,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:44:53 BoogieIcfgContainer [2019-09-10 01:44:53,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:44:53,306 INFO L168 Benchmark]: Toolchain (without parser) took 2097.43 ms. Allocated memory was 135.8 MB in the beginning and 202.4 MB in the end (delta: 66.6 MB). Free memory was 90.4 MB in the beginning and 92.3 MB in the end (delta: -1.8 MB). Peak memory consumption was 64.7 MB. Max. memory is 7.1 GB. [2019-09-10 01:44:53,308 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 135.8 MB. Free memory was 109.0 MB in the beginning and 108.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:44:53,310 INFO L168 Benchmark]: CACSL2BoogieTranslator took 410.00 ms. Allocated memory was 135.8 MB in the beginning and 202.4 MB in the end (delta: 66.6 MB). Free memory was 90.2 MB in the beginning and 178.6 MB in the end (delta: -88.3 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2019-09-10 01:44:53,312 INFO L168 Benchmark]: Boogie Preprocessor took 44.39 ms. Allocated memory is still 202.4 MB. Free memory was 178.6 MB in the beginning and 176.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-09-10 01:44:53,313 INFO L168 Benchmark]: RCFGBuilder took 421.68 ms. Allocated memory is still 202.4 MB. Free memory was 176.3 MB in the beginning and 157.7 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2019-09-10 01:44:53,314 INFO L168 Benchmark]: TraceAbstraction took 1217.23 ms. Allocated memory is still 202.4 MB. Free memory was 157.7 MB in the beginning and 92.3 MB in the end (delta: 65.4 MB). Peak memory consumption was 65.4 MB. Max. memory is 7.1 GB. [2019-09-10 01:44:53,329 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 135.8 MB. Free memory was 109.0 MB in the beginning and 108.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 410.00 ms. Allocated memory was 135.8 MB in the beginning and 202.4 MB in the end (delta: 66.6 MB). Free memory was 90.2 MB in the beginning and 178.6 MB in the end (delta: -88.3 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.39 ms. Allocated memory is still 202.4 MB. Free memory was 178.6 MB in the beginning and 176.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 421.68 ms. Allocated memory is still 202.4 MB. Free memory was 176.3 MB in the beginning and 157.7 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1217.23 ms. Allocated memory is still 202.4 MB. Free memory was 157.7 MB in the beginning and 92.3 MB in the end (delta: 65.4 MB). Peak memory consumption was 65.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 30, overapproximation of bitwiseAnd at line 27. Possible FailurePath: [L75] float x = 0.0f; VAL [x=0] [L76] CALL, EXPR round_float(x) VAL [\old(x)=0] [L13] __uint32_t w; [L15] int exponent_less_127; VAL [\old(x)=0, x=0] [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 VAL [\old(x)=0, exponent_less_127=-1, w=8, x=0] [L25] COND TRUE exponent_less_127 < 23 VAL [\old(x)=0, exponent_less_127=-1, w=8, x=0] [L26] COND TRUE exponent_less_127 < 0 [L27] w &= 0x80000000 VAL [\old(x)=0, exponent_less_127=-1, x=0] [L28] COND TRUE exponent_less_127 == -1 [L30] w |= ((__uint32_t)127 << 23) VAL [\old(x)=0, exponent_less_127=-1, x=0] [L48] ieee_float_shape_type sf_u; [L49] sf_u.word = (w) [L50] EXPR sf_u.value [L50] (x) = sf_u.value [L52] return x; VAL [\old(x)=0, \result=5, exponent_less_127=-1, x=5] [L76] RET, EXPR round_float(x) VAL [round_float(x)=5, x=0] [L76] float res = round_float(x); [L79] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=5, res == 0.0f && __signbit_float(res) == 0=0, x=0] [L79] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L80] __VERIFIER_error() VAL [res=5, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 38 locations, 1 error locations. UNSAFE Result, 1.1s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 67 SDtfs, 37 SDslu, 273 SDs, 0 SdLazy, 79 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 4 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, 2 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 2346 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...