/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_0250a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:02:49,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:02:49,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:02:49,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:02:49,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:02:49,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:02:49,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:02:49,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:02:49,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:02:49,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:02:49,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:02:49,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:02:49,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:02:49,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:02:49,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:02:49,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:02:49,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:02:49,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:02:49,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:02:49,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:02:49,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:02:49,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:02:49,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:02:49,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:02:49,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:02:49,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:02:49,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:02:49,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:02:49,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:02:49,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:02:49,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:02:49,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:02:49,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:02:49,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:02:49,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:02:49,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:02:49,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:02:49,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:02:49,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:02:49,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:02:49,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:02:49,519 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 01:02:49,547 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:02:49,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:02:49,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:02:49,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:02:49,549 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:02:49,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:02:49,550 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:02:49,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:02:49,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:02:49,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:02:49,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:02:49,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:02:49,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:02:49,551 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:02:49,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:02:49,552 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:02:49,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:02:49,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:02:49,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:02:49,553 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:02:49,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:02:49,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:02:49,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:02:49,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:02:49,554 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:02:49,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:02:49,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:02:49,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:02:49,555 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:02:49,555 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:02:49,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:02:49,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:02:49,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:02:49,977 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:02:49,978 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:02:49,979 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0250a.c [2020-10-27 01:02:50,077 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c26800fcb/72b88edb65c24281801f74aca290dcd9/FLAG11b661ef5 [2020-10-27 01:02:50,753 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:02:50,754 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0250a.c [2020-10-27 01:02:50,771 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c26800fcb/72b88edb65c24281801f74aca290dcd9/FLAG11b661ef5 [2020-10-27 01:02:51,094 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c26800fcb/72b88edb65c24281801f74aca290dcd9 [2020-10-27 01:02:51,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:02:51,106 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:02:51,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:02:51,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:02:51,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:02:51,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:02:51" (1/1) ... [2020-10-27 01:02:51,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41ea4a01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:51, skipping insertion in model container [2020-10-27 01:02:51,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:02:51" (1/1) ... [2020-10-27 01:02:51,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:02:51,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:02:51,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:02:51,426 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:02:51,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:02:51,521 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:02:51,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:51 WrapperNode [2020-10-27 01:02:51,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:02:51,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:02:51,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:02:51,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:02:51,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:51" (1/1) ... [2020-10-27 01:02:51,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:51" (1/1) ... [2020-10-27 01:02:51,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:51" (1/1) ... [2020-10-27 01:02:51,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:51" (1/1) ... [2020-10-27 01:02:51,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:51" (1/1) ... [2020-10-27 01:02:51,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:51" (1/1) ... [2020-10-27 01:02:51,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:51" (1/1) ... [2020-10-27 01:02:51,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:02:51,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:02:51,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:02:51,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:02:51,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:51" (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 01:02:51,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:02:51,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:02:51,723 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:02:51,723 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2020-10-27 01:02:51,724 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-27 01:02:51,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-10-27 01:02:51,724 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-27 01:02:51,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_asinf [2020-10-27 01:02:51,724 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:02:51,724 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:02:51,725 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:02:51,725 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:02:51,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:02:51,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 01:02:51,725 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2020-10-27 01:02:51,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:02:51,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:02:51,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:02:51,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:02:51,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:02:51,726 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-27 01:02:51,726 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-10-27 01:02:51,727 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-27 01:02:51,727 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_asinf [2020-10-27 01:02:51,727 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:02:51,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:02:51,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:02:51,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:02:52,576 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:02:52,576 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-27 01:02:52,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:02:52 BoogieIcfgContainer [2020-10-27 01:02:52,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:02:52,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:02:52,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:02:52,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:02:52,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:02:51" (1/3) ... [2020-10-27 01:02:52,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93ba502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:02:52, skipping insertion in model container [2020-10-27 01:02:52,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:51" (2/3) ... [2020-10-27 01:02:52,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93ba502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:02:52, skipping insertion in model container [2020-10-27 01:02:52,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:02:52" (3/3) ... [2020-10-27 01:02:52,590 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0250a.c [2020-10-27 01:02:52,602 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:02:52,608 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:02:52,623 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:02:52,652 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:02:52,652 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:02:52,653 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:02:52,653 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:02:52,653 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:02:52,653 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:02:52,653 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:02:52,653 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:02:52,674 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-10-27 01:02:52,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 01:02:52,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:02:52,682 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] [2020-10-27 01:02:52,682 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:02:52,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:02:52,689 INFO L82 PathProgramCache]: Analyzing trace with hash -284303133, now seen corresponding path program 1 times [2020-10-27 01:02:52,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:02:52,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388857956] [2020-10-27 01:02:52,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:02:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:02:52,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:02:53,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:02:53,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 01:02:53,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:02:53,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-27 01:02:53,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:02:53,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:02:53,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 01:02:53,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:02:53,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 01:02:53,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:02:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:02:53,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:02:53,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:02:53,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:02:53,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:02:53,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 01:02:53,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:02:53,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:02:53,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:02:53,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:02:53,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:02:53,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:02:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:02:53,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:02:53,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:02:53,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:02:53,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:02:53,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:02:53,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:02:53,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:02:53,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:02:53,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:02:53,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:02:53,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 01:02:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:02:53,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:02:53,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:02:53,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:02:53,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:02:53,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:02:53,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:02:53,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:02:53,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:02:53,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:02:53,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:02:53,466 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 01:02:53,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388857956] [2020-10-27 01:02:53,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:02:53,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:02:53,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878370368] [2020-10-27 01:02:53,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:02:53,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:02:53,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:02:53,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:02:53,494 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 4 states. [2020-10-27 01:02:53,743 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 01:02:54,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:02:54,075 INFO L93 Difference]: Finished difference Result 149 states and 220 transitions. [2020-10-27 01:02:54,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:02:54,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-27 01:02:54,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:02:54,088 INFO L225 Difference]: With dead ends: 149 [2020-10-27 01:02:54,089 INFO L226 Difference]: Without dead ends: 73 [2020-10-27 01:02:54,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:02:54,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-27 01:02:54,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-10-27 01:02:54,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-27 01:02:54,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 90 transitions. [2020-10-27 01:02:54,149 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 90 transitions. Word has length 22 [2020-10-27 01:02:54,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:02:54,150 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 90 transitions. [2020-10-27 01:02:54,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:02:54,150 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 90 transitions. [2020-10-27 01:02:54,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 01:02:54,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:02:54,152 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 01:02:54,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:02:54,152 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:02:54,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:02:54,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1150570991, now seen corresponding path program 1 times [2020-10-27 01:02:54,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:02:54,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217739956] [2020-10-27 01:02:54,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:02:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:02:54,202 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:02:54,202 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:02:54,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:02:54,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:02:54 BoogieIcfgContainer [2020-10-27 01:02:54,227 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:02:54,229 INFO L168 Benchmark]: Toolchain (without parser) took 3129.88 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 142.1 MB in the beginning and 161.8 MB in the end (delta: -19.6 MB). Peak memory consumption was 12.3 MB. Max. memory is 8.0 GB. [2020-10-27 01:02:54,230 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 162.5 MB. Free memory was 135.0 MB in the beginning and 134.8 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:02:54,231 INFO L168 Benchmark]: CACSL2BoogieTranslator took 410.94 ms. Allocated memory is still 162.5 MB. Free memory was 141.4 MB in the beginning and 127.2 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:02:54,232 INFO L168 Benchmark]: Boogie Preprocessor took 128.78 ms. Allocated memory is still 162.5 MB. Free memory was 127.2 MB in the beginning and 143.9 MB in the end (delta: -16.7 MB). Peak memory consumption was 2.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:02:54,233 INFO L168 Benchmark]: RCFGBuilder took 925.87 ms. Allocated memory is still 162.5 MB. Free memory was 143.9 MB in the beginning and 106.2 MB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:02:54,234 INFO L168 Benchmark]: TraceAbstraction took 1646.71 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 106.2 MB in the beginning and 161.8 MB in the end (delta: -55.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:02:54,238 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 162.5 MB. Free memory was 135.0 MB in the beginning and 134.8 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 410.94 ms. Allocated memory is still 162.5 MB. Free memory was 141.4 MB in the beginning and 127.2 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 128.78 ms. Allocated memory is still 162.5 MB. Free memory was 127.2 MB in the beginning and 143.9 MB in the end (delta: -16.7 MB). Peak memory consumption was 2.4 MB. Max. memory is 8.0 GB. * RCFGBuilder took 925.87 ms. Allocated memory is still 162.5 MB. Free memory was 143.9 MB in the beginning and 106.2 MB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1646.71 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 106.2 MB in the beginning and 161.8 MB in the end (delta: -55.6 MB). There was no memory consumed. 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 60, overapproximation of someUnaryDOUBLEoperation at line 149, overapproximation of bitwiseAnd at line 163, overapproximation of someUnaryFLOAToperation at line 147, overapproximation of someBinaryArithmeticFLOAToperation at line 166. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L62] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L145-L153] static const float one_asin = 1.0000000000e+00, huge_asin = 1.000e+30, pio2_hi_asin = 1.57079637050628662109375f, pio2_lo_asin = -4.37113900018624283e-8f, pio4_hi_asin = 0.785398185253143310546875f, pS0_asin = 1.6666667163e-01, pS1_asin = -3.2556581497e-01, pS2_asin = 2.0121252537e-01, pS3_asin = -4.0055535734e-02, pS4_asin = 7.9153501429e-04, pS5_asin = 3.4793309169e-05, qS1_asin = -2.4033949375e+00, qS2_asin = 2.0209457874e+00, qS3_asin = -6.8828397989e-01, qS4_asin = 7.7038154006e-02; [L230] float x = 1.0f / 0.0f; [L231] CALL, EXPR __ieee754_asinf(x) [L156] float t, w, p, q, c, r, s; [L157] __int32_t hx, ix; [L159] ieee_float_shape_type gf_u; [L160] gf_u.value = (x) [L161] EXPR gf_u.word [L161] (hx) = gf_u.word [L163] ix = hx & 0x7fffffff [L164] COND TRUE ix == 0x3f800000 [L166] return x * pio2_hi_asin + x * pio2_lo_asin; [L231] RET, EXPR __ieee754_asinf(x) [L231] float res = __ieee754_asinf(x); [L234] CALL, EXPR isnan_float(res) [L60] return x != x; [L234] RET, EXPR isnan_float(res) [L234] COND TRUE !isnan_float(res) [L235] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0250a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 99 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 90 SDtfs, 14 SDslu, 75 SDs, 0 SdLazy, 89 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred 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, 0.5s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 2457 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...