/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_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:04:06,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:04:06,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:04:06,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:04:06,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:04:06,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:04:06,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:04:06,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:04:06,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:04:06,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:04:06,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:04:06,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:04:06,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:04:06,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:04:06,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:04:06,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:04:06,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:04:06,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:04:06,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:04:06,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:04:06,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:04:06,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:04:06,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:04:06,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:04:06,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:04:06,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:04:06,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:04:06,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:04:06,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:04:06,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:04:06,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:04:06,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:04:06,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:04:06,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:04:06,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:04:06,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:04:06,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:04:06,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:04:06,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:04:06,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:04:06,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:04:06,566 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 01:04:06,631 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:04:06,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:04:06,636 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:04:06,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:04:06,637 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:04:06,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:04:06,637 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:04:06,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:04:06,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:04:06,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:04:06,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:04:06,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:04:06,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:04:06,640 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:04:06,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:04:06,641 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:04:06,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:04:06,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:04:06,641 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:04:06,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:04:06,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:04:06,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:04:06,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:04:06,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:04:06,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:04:06,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:04:06,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:04:06,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:04:06,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:04:06,644 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:04:07,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:04:07,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:04:07,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:04:07,110 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:04:07,111 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:04:07,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131a.c [2020-10-27 01:04:07,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4346e28ef/5249282aeae5449790dc7071e188a54a/FLAG0fada62d7 [2020-10-27 01:04:07,759 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:04:07,760 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1131a.c [2020-10-27 01:04:07,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4346e28ef/5249282aeae5449790dc7071e188a54a/FLAG0fada62d7 [2020-10-27 01:04:08,089 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4346e28ef/5249282aeae5449790dc7071e188a54a [2020-10-27 01:04:08,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:04:08,104 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:04:08,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:04:08,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:04:08,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:04:08,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:04:08" (1/1) ... [2020-10-27 01:04:08,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d415de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:08, skipping insertion in model container [2020-10-27 01:04:08,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:04:08" (1/1) ... [2020-10-27 01:04:08,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:04:08,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:04:08,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:04:08,402 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:04:08,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:04:08,504 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:04:08,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:08 WrapperNode [2020-10-27 01:04:08,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:04:08,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:04:08,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:04:08,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:04:08,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:08" (1/1) ... [2020-10-27 01:04:08,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:08" (1/1) ... [2020-10-27 01:04:08,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:08" (1/1) ... [2020-10-27 01:04:08,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:08" (1/1) ... [2020-10-27 01:04:08,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:08" (1/1) ... [2020-10-27 01:04:08,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:08" (1/1) ... [2020-10-27 01:04:08,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:08" (1/1) ... [2020-10-27 01:04:08,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:04:08,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:04:08,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:04:08,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:04:08,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:08" (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 01:04:08,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:04:08,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:04:08,682 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:04:08,682 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-10-27 01:04:08,683 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-10-27 01:04:08,684 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:04:08,684 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:04:08,684 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:04:08,684 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:04:08,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:04:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 01:04:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-10-27 01:04:08,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:04:08,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:04:08,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:04:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:04:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:04:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-10-27 01:04:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:04:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:04:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:04:08,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-27 01:04:08,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:04:09,422 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:04:09,423 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-27 01:04:09,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:04:09 BoogieIcfgContainer [2020-10-27 01:04:09,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:04:09,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:04:09,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:04:09,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:04:09,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:04:08" (1/3) ... [2020-10-27 01:04:09,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea19610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:04:09, skipping insertion in model container [2020-10-27 01:04:09,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:08" (2/3) ... [2020-10-27 01:04:09,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea19610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:04:09, skipping insertion in model container [2020-10-27 01:04:09,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:04:09" (3/3) ... [2020-10-27 01:04:09,442 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131a.c [2020-10-27 01:04:09,464 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:04:09,471 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:04:09,488 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:04:09,540 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:04:09,540 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:04:09,540 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:04:09,541 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:04:09,541 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:04:09,541 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:04:09,541 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:04:09,541 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:04:09,567 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-10-27 01:04:09,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 01:04:09,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:04:09,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:04:09,576 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:04:09,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:04:09,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1031583415, now seen corresponding path program 1 times [2020-10-27 01:04:09,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:04:09,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456847018] [2020-10-27 01:04:09,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:04:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:09,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:09,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:09,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:10,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:10,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 01:04:10,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:04:10,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-10-27 01:04:10,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:10,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:10,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 01:04:10,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:10,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 01:04:10,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:04:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:10,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:10,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:10,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:10,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:10,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 01:04:10,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:10,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:10,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:10,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:10,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:04:10,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:04:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:10,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:10,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:10,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:04:10,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:10,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:04:10,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:10,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:10,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:04:10,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:10,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:10,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 01:04:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:10,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:10,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:10,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:10,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:10,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:04:10,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:04:10,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 01:04:10,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:10,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:10,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:04:10,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:10,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:04:10,469 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 01:04:10,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456847018] [2020-10-27 01:04:10,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:04:10,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:04:10,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082899435] [2020-10-27 01:04:10,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:04:10,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:04:10,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:04:10,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:04:10,499 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 4 states. [2020-10-27 01:04:10,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:04:10,810 INFO L93 Difference]: Finished difference Result 117 states and 181 transitions. [2020-10-27 01:04:10,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:04:10,812 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-27 01:04:10,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:04:10,823 INFO L225 Difference]: With dead ends: 117 [2020-10-27 01:04:10,823 INFO L226 Difference]: Without dead ends: 56 [2020-10-27 01:04:10,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 01:04:10,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-27 01:04:10,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-27 01:04:10,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 01:04:10,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 71 transitions. [2020-10-27 01:04:10,879 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 71 transitions. Word has length 26 [2020-10-27 01:04:10,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:04:10,879 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 71 transitions. [2020-10-27 01:04:10,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:04:10,880 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 71 transitions. [2020-10-27 01:04:10,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 01:04:10,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:04:10,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:04:10,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:04:10,882 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:04:10,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:04:10,883 INFO L82 PathProgramCache]: Analyzing trace with hash -2101718248, now seen corresponding path program 1 times [2020-10-27 01:04:10,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:04:10,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862898439] [2020-10-27 01:04:10,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:04:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:04:10,939 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:04:10,939 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:04:10,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:04:10,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:04:10 BoogieIcfgContainer [2020-10-27 01:04:10,963 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:04:10,965 INFO L168 Benchmark]: Toolchain (without parser) took 2866.90 ms. Allocated memory is still 152.0 MB. Free memory was 108.5 MB in the beginning and 101.0 MB in the end (delta: 7.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:10,966 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 152.0 MB. Free memory was 125.8 MB in the beginning and 125.3 MB in the end (delta: 435.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:04:10,967 INFO L168 Benchmark]: CACSL2BoogieTranslator took 399.73 ms. Allocated memory is still 152.0 MB. Free memory was 107.9 MB in the beginning and 135.3 MB in the end (delta: -27.4 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:10,968 INFO L168 Benchmark]: Boogie Preprocessor took 71.33 ms. Allocated memory is still 152.0 MB. Free memory was 135.3 MB in the beginning and 133.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:10,969 INFO L168 Benchmark]: RCFGBuilder took 846.37 ms. Allocated memory is still 152.0 MB. Free memory was 133.2 MB in the beginning and 105.4 MB in the end (delta: 27.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:10,970 INFO L168 Benchmark]: TraceAbstraction took 1531.03 ms. Allocated memory is still 152.0 MB. Free memory was 104.9 MB in the beginning and 101.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:10,974 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 152.0 MB. Free memory was 125.8 MB in the beginning and 125.3 MB in the end (delta: 435.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 399.73 ms. Allocated memory is still 152.0 MB. Free memory was 107.9 MB in the beginning and 135.3 MB in the end (delta: -27.4 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 71.33 ms. Allocated memory is still 152.0 MB. Free memory was 135.3 MB in the beginning and 133.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 846.37 ms. Allocated memory is still 152.0 MB. Free memory was 133.2 MB in the beginning and 105.4 MB in the end (delta: 27.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1531.03 ms. Allocated memory is still 152.0 MB. Free memory was 104.9 MB in the beginning and 101.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.9 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 136, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryArithmeticFLOAToperation at line 37, overapproximation of bitwiseXor at line 33. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L128] float x = __VERIFIER_nondet_float(); [L129] float y = 1.0f / 0.0f; [L131] CALL isfinite_float(x) [L111] __int32_t ix; [L113] ieee_float_shape_type gf_u; [L114] gf_u.value = (x) [L115] EXPR gf_u.word [L115] (ix) = gf_u.word [L117] ix &= 0x7fffffff [L118] return (((ix) < 0x7f800000L)); [L131] RET isfinite_float(x) [L131] COND TRUE isfinite_float(x) [L133] CALL, EXPR fmod_float(x, y) [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); [L133] RET, EXPR fmod_float(x, y) [L133] float res = fmod_float(x, y); [L136] COND TRUE res != x [L137] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1131a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 74 SDtfs, 8 SDslu, 62 SDs, 0 SdLazy, 77 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred 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, 0.6s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 2200 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...