/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=DEEPEST --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_1091.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:44:51,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:44:51,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:44:51,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:44:51,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:44:51,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:44:51,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:44:51,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:44:51,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:44:51,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:44:51,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:44:51,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:44:51,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:44:51,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:44:51,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:44:51,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:44:51,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:44:51,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:44:51,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:44:51,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:44:51,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:44:51,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:44:51,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:44:51,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:44:51,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:44:51,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:44:51,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:44:51,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:44:51,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:44:51,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:44:51,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:44:51,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:44:51,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:44:51,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:44:51,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:44:51,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:44:51,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:44:51,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:44:51,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:44:51,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:44:51,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:44:51,540 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 19:44:51,593 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:44:51,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:44:51,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:44:51,599 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:44:51,599 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:44:51,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:44:51,600 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:44:51,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:44:51,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:44:51,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:44:51,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:44:51,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:44:51,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:44:51,603 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:44:51,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:44:51,603 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:44:51,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:44:51,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:44:51,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:44:51,604 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:44:51,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:44:51,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:44:51,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:44:51,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:44:51,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:44:51,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:44:51,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:44:51,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:44:51,627 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:44:51,628 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:44:52,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:44:52,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:44:52,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:44:52,102 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:44:52,103 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:44:52,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1091.c [2020-10-27 19:44:52,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/918ce90f8/8130e283cbb6436a858c666e8dc6f2f8/FLAG68089404b [2020-10-27 19:44:52,823 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:44:52,824 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1091.c [2020-10-27 19:44:52,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/918ce90f8/8130e283cbb6436a858c666e8dc6f2f8/FLAG68089404b [2020-10-27 19:44:53,190 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/918ce90f8/8130e283cbb6436a858c666e8dc6f2f8 [2020-10-27 19:44:53,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:44:53,200 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:44:53,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:44:53,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:44:53,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:44:53,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:44:53" (1/1) ... [2020-10-27 19:44:53,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5559d32d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:53, skipping insertion in model container [2020-10-27 19:44:53,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:44:53" (1/1) ... [2020-10-27 19:44:53,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:44:53,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:44:53,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:44:53,426 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:44:53,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:44:53,485 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:44:53,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:53 WrapperNode [2020-10-27 19:44:53,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:44:53,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:44:53,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:44:53,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:44:53,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:53" (1/1) ... [2020-10-27 19:44:53,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:53" (1/1) ... [2020-10-27 19:44:53,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:53" (1/1) ... [2020-10-27 19:44:53,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:53" (1/1) ... [2020-10-27 19:44:53,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:53" (1/1) ... [2020-10-27 19:44:53,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:53" (1/1) ... [2020-10-27 19:44:53,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:53" (1/1) ... [2020-10-27 19:44:53,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:44:53,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:44:53,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:44:53,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:44:53,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:53" (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 19:44:53,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:44:53,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:44:53,682 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:44:53,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_float [2020-10-27 19:44:53,683 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-27 19:44:53,683 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:44:53,683 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:44:53,683 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:44:53,683 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:44:53,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:44:53,684 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_float [2020-10-27 19:44:53,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 19:44:53,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:44:53,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:44:53,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:44:53,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 19:44:53,685 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-27 19:44:53,685 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:44:53,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:44:53,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:44:53,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:44:54,297 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:44:54,298 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-27 19:44:54,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:44:54 BoogieIcfgContainer [2020-10-27 19:44:54,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:44:54,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:44:54,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:44:54,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:44:54,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:44:53" (1/3) ... [2020-10-27 19:44:54,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f88667e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:44:54, skipping insertion in model container [2020-10-27 19:44:54,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:53" (2/3) ... [2020-10-27 19:44:54,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f88667e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:44:54, skipping insertion in model container [2020-10-27 19:44:54,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:44:54" (3/3) ... [2020-10-27 19:44:54,314 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1091.c [2020-10-27 19:44:54,328 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:44:54,334 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:44:54,351 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:44:54,450 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:44:54,450 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:44:54,450 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:44:54,450 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:44:54,451 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:44:54,451 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:44:54,451 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:44:54,451 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:44:54,478 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-10-27 19:44:54,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 19:44:54,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:44:54,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:44:54,487 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:44:54,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:44:54,494 INFO L82 PathProgramCache]: Analyzing trace with hash 151971852, now seen corresponding path program 1 times [2020-10-27 19:44:54,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:44:54,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167058204] [2020-10-27 19:44:54,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:44:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:44:54,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:54,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:44:54,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 19:44:54,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:44:54,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-27 19:44:54,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:44:54,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:44:54,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 19:44:54,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:44:54,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:44:55,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:44:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:44:55,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:55,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:44:55,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:44:55,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:44:55,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 19:44:55,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:44:55,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:44:55,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:44:55,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:44:55,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:44:55,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:44:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:44:55,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:55,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:44:55,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 19:44:55,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:44:55,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 19:44:55,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:44:55,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:44:55,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 19:44:55,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:44:55,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:44:55,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 19:44:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:44:55,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:55,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:44:55,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:44:55,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:44:55,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:44:55,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:44:55,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:44:55,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:44:55,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:44:55,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:44:55,123 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 19:44:55,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167058204] [2020-10-27 19:44:55,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:44:55,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:44:55,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214474437] [2020-10-27 19:44:55,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:44:55,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:44:55,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:44:55,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:44:55,159 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 4 states. [2020-10-27 19:44:55,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:44:55,359 INFO L93 Difference]: Finished difference Result 75 states and 102 transitions. [2020-10-27 19:44:55,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 19:44:55,361 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-27 19:44:55,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:44:55,374 INFO L225 Difference]: With dead ends: 75 [2020-10-27 19:44:55,374 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 19:44:55,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 19:44:55,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 19:44:55,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-27 19:44:55,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-27 19:44:55,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-10-27 19:44:55,429 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 23 [2020-10-27 19:44:55,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:44:55,430 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-10-27 19:44:55,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:44:55,430 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-10-27 19:44:55,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 19:44:55,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:44:55,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:44:55,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:44:55,432 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:44:55,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:44:55,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1670325624, now seen corresponding path program 1 times [2020-10-27 19:44:55,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:44:55,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817259000] [2020-10-27 19:44:55,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:44:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 19:44:55,492 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 19:44:55,493 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 19:44:55,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:44:55,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:44:55 BoogieIcfgContainer [2020-10-27 19:44:55,516 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:44:55,519 INFO L168 Benchmark]: Toolchain (without parser) took 2322.72 ms. Allocated memory is still 152.0 MB. Free memory was 127.7 MB in the beginning and 74.3 MB in the end (delta: 53.4 MB). Peak memory consumption was 53.2 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:55,520 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 152.0 MB. Free memory is still 128.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:44:55,521 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.08 ms. Allocated memory is still 152.0 MB. Free memory was 127.0 MB in the beginning and 116.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:55,522 INFO L168 Benchmark]: Boogie Preprocessor took 92.38 ms. Allocated memory is still 152.0 MB. Free memory was 116.2 MB in the beginning and 114.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:55,523 INFO L168 Benchmark]: RCFGBuilder took 719.57 ms. Allocated memory is still 152.0 MB. Free memory was 114.5 MB in the beginning and 96.2 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:55,524 INFO L168 Benchmark]: TraceAbstraction took 1211.81 ms. Allocated memory is still 152.0 MB. Free memory was 95.7 MB in the beginning and 74.3 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.7 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:55,528 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 152.0 MB. Free memory is still 128.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 284.08 ms. Allocated memory is still 152.0 MB. Free memory was 127.0 MB in the beginning and 116.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 92.38 ms. Allocated memory is still 152.0 MB. Free memory was 116.2 MB in the beginning and 114.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 719.57 ms. Allocated memory is still 152.0 MB. Free memory was 114.5 MB in the beginning and 96.2 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1211.81 ms. Allocated memory is still 152.0 MB. Free memory was 95.7 MB in the beginning and 74.3 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.7 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 59, overapproximation of someBinaryArithmeticFLOAToperation at line 46, overapproximation of bitwiseAnd at line 23. Possible FailurePath: [L13] static const float huge_ceil = 1.0e30; [L68] float x = 0.0f / 0.0f; [L70] CALL, EXPR ceil_float(x) [L16] __int32_t i0, j0; [L17] __uint32_t i, ix; [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] ix = (i0 & 0x7fffffff) [L24] j0 = (ix >> 23) - 0x7f [L25] COND FALSE !(j0 < 23) [L45] COND TRUE !((ix) < 0x7f800000L) [L46] return x + x; [L70] RET, EXPR ceil_float(x) [L70] float res = ceil_float(x); [L73] CALL, EXPR isnan_float(res) [L59] return x != x; [L73] RET, EXPR isnan_float(res) [L73] COND TRUE !isnan_float(res) [L74] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1091.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 43 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: 46 SDtfs, 10 SDslu, 36 SDs, 0 SdLazy, 42 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1474 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...