/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0930.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:03:43,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:03:43,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:03:43,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:03:43,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:03:43,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:03:43,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:03:43,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:03:43,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:03:43,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:03:43,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:03:43,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:03:43,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:03:43,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:03:43,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:03:43,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:03:43,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:03:43,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:03:43,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:03:43,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:03:43,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:03:43,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:03:43,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:03:43,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:03:43,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:03:43,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:03:43,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:03:43,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:03:43,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:03:43,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:03:43,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:03:43,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:03:43,373 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:03:43,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:03:43,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:03:43,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:03:43,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:03:43,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:03:43,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:03:43,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:03:43,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:03:43,381 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 [2020-10-27 01:03:43,412 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:03:43,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:03:43,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:03:43,415 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:03:43,415 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:03:43,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:03:43,417 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:03:43,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:03:43,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:03:43,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:03:43,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:03:43,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:03:43,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:03:43,419 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:03:43,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:03:43,420 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:03:43,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:03:43,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:03:43,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:03:43,421 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:03:43,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:03:43,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:03:43,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:03:43,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:03:43,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:03:43,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:03:43,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:03:43,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:03:43,423 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:03:43,423 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:03:43,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:03:43,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:03:43,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:03:43,862 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:03:43,862 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:03:43,863 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0930.c [2020-10-27 01:03:43,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc19aa95d/48b7d47bcdd34ed48fd9e345ae2e9c71/FLAG132f99b14 [2020-10-27 01:03:44,634 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:03:44,637 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0930.c [2020-10-27 01:03:44,646 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc19aa95d/48b7d47bcdd34ed48fd9e345ae2e9c71/FLAG132f99b14 [2020-10-27 01:03:44,956 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc19aa95d/48b7d47bcdd34ed48fd9e345ae2e9c71 [2020-10-27 01:03:44,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:03:44,972 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:03:44,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:03:44,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:03:44,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:03:44,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:03:44" (1/1) ... [2020-10-27 01:03:44,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7709e7c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:44, skipping insertion in model container [2020-10-27 01:03:44,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:03:44" (1/1) ... [2020-10-27 01:03:44,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:03:45,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:03:45,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:03:45,251 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:03:45,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:03:45,309 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:03:45,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:45 WrapperNode [2020-10-27 01:03:45,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:03:45,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:03:45,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:03:45,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:03:45,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:45" (1/1) ... [2020-10-27 01:03:45,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:45" (1/1) ... [2020-10-27 01:03:45,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:45" (1/1) ... [2020-10-27 01:03:45,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:45" (1/1) ... [2020-10-27 01:03:45,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:45" (1/1) ... [2020-10-27 01:03:45,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:45" (1/1) ... [2020-10-27 01:03:45,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:45" (1/1) ... [2020-10-27 01:03:45,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:03:45,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:03:45,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:03:45,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:03:45,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:45" (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 [2020-10-27 01:03:45,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:03:45,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:03:45,451 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:03:45,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_logf [2020-10-27 01:03:45,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-27 01:03:45,452 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:03:45,452 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:03:45,452 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:03:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:03:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:03:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 01:03:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_logf [2020-10-27 01:03:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:03:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:03:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:03:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:03:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:03:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-27 01:03:45,456 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:03:45,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:03:45,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:03:45,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:03:46,098 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:03:46,099 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-27 01:03:46,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:03:46 BoogieIcfgContainer [2020-10-27 01:03:46,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:03:46,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:03:46,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:03:46,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:03:46,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:03:44" (1/3) ... [2020-10-27 01:03:46,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40246f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:03:46, skipping insertion in model container [2020-10-27 01:03:46,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:45" (2/3) ... [2020-10-27 01:03:46,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40246f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:03:46, skipping insertion in model container [2020-10-27 01:03:46,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:03:46" (3/3) ... [2020-10-27 01:03:46,114 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0930.c [2020-10-27 01:03:46,130 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:03:46,136 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:03:46,150 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:03:46,194 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:03:46,194 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:03:46,195 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:03:46,195 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:03:46,195 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:03:46,195 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:03:46,195 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:03:46,195 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:03:46,218 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-10-27 01:03:46,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-27 01:03:46,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:03:46,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:03:46,227 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:03:46,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:03:46,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1726870177, now seen corresponding path program 1 times [2020-10-27 01:03:46,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:03:46,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568021394] [2020-10-27 01:03:46,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:03:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:46,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:46,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:46,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 01:03:46,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:03:46,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-27 01:03:46,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:46,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:46,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 01:03:46,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:46,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 01:03:46,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:03:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:46,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:46,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:46,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:03:46,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:03:46,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 01:03:46,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:46,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:46,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:03:46,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:46,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:03:46,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:03:46,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:46,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:46,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:46,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:03:46,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:03:46,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:03:46,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:46,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:46,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:03:46,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:46,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:03:46,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:03:46,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568021394] [2020-10-27 01:03:46,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:03:46,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:03:46,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239157267] [2020-10-27 01:03:46,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:03:46,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:03:46,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:03:46,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:03:46,875 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-10-27 01:03:47,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:03:47,121 INFO L93 Difference]: Finished difference Result 91 states and 133 transitions. [2020-10-27 01:03:47,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:03:47,123 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-27 01:03:47,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:03:47,132 INFO L225 Difference]: With dead ends: 91 [2020-10-27 01:03:47,132 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 01:03:47,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:03:47,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 01:03:47,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-27 01:03:47,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-27 01:03:47,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2020-10-27 01:03:47,181 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 18 [2020-10-27 01:03:47,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:03:47,181 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2020-10-27 01:03:47,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:03:47,181 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2020-10-27 01:03:47,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 01:03:47,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:03:47,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:03:47,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:03:47,183 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:03:47,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:03:47,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1045833239, now seen corresponding path program 1 times [2020-10-27 01:03:47,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:03:47,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008197139] [2020-10-27 01:03:47,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:03:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:03:47,223 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:03:47,224 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:03:47,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:03:47,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:03:47 BoogieIcfgContainer [2020-10-27 01:03:47,245 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:03:47,248 INFO L168 Benchmark]: Toolchain (without parser) took 2282.98 ms. Allocated memory is still 157.3 MB. Free memory was 132.9 MB in the beginning and 68.7 MB in the end (delta: 64.2 MB). Peak memory consumption was 65.0 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:47,249 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 125.8 MB. Free memory is still 84.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:03:47,249 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.14 ms. Allocated memory is still 157.3 MB. Free memory was 132.2 MB in the beginning and 120.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:47,250 INFO L168 Benchmark]: Boogie Preprocessor took 70.80 ms. Allocated memory is still 157.3 MB. Free memory was 120.3 MB in the beginning and 118.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:47,251 INFO L168 Benchmark]: RCFGBuilder took 719.92 ms. Allocated memory is still 157.3 MB. Free memory was 118.2 MB in the beginning and 94.9 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:47,252 INFO L168 Benchmark]: TraceAbstraction took 1138.56 ms. Allocated memory is still 157.3 MB. Free memory was 94.5 MB in the beginning and 68.7 MB in the end (delta: 25.8 MB). Peak memory consumption was 27.2 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:47,256 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 125.8 MB. Free memory is still 84.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 336.14 ms. Allocated memory is still 157.3 MB. Free memory was 132.2 MB in the beginning and 120.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 70.80 ms. Allocated memory is still 157.3 MB. Free memory was 120.3 MB in the beginning and 118.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 719.92 ms. Allocated memory is still 157.3 MB. Free memory was 118.2 MB in the beginning and 94.9 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1138.56 ms. Allocated memory is still 157.3 MB. Free memory was 94.5 MB in the beginning and 68.7 MB in the end (delta: 25.8 MB). Peak memory consumption was 27.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 122, overapproximation of someBinaryArithmeticFLOAToperation at line 34, overapproximation of bitwiseAnd at line 33. Possible FailurePath: [L14-L18] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L20] static const float zero_log = 0.0; [L118] float x = 1.0f; [L119] CALL, EXPR __ieee754_logf(x) [L23] float hfsq, f, s, z, R, w, t1, t2, dk; [L24] __int32_t k, ix, i, j; [L27] ieee_float_shape_type gf_u; [L28] gf_u.value = (x) [L29] EXPR gf_u.word [L29] (ix) = gf_u.word [L32] k = 0 [L33] COND TRUE ((ix & 0x7fffffff) == 0) [L34] return -two25_log / zero_log; [L119] RET, EXPR __ieee754_logf(x) [L119] float res = __ieee754_logf(x); [L122] EXPR res == 0.0f && __signbit_float(res) == 0 [L122] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L123] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0930.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 8 SDslu, 48 SDs, 0 SdLazy, 55 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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, 0.3s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 1564 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...