/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_0910b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:44:34,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:44:34,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:44:34,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:44:34,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:44:34,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:44:34,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:44:34,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:44:34,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:44:34,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:44:34,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:44:34,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:44:34,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:44:34,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:44:34,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:44:34,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:44:34,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:44:34,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:44:34,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:44:34,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:44:34,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:44:34,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:44:34,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:44:34,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:44:34,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:44:34,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:44:34,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:44:34,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:44:34,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:44:34,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:44:34,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:44:34,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:44:34,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:44:34,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:44:34,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:44:34,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:44:34,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:44:34,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:44:34,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:44:34,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:44:34,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:44:34,515 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 19:44:34,579 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:44:34,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:44:34,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:44:34,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:44:34,582 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:44:34,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:44:34,582 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:44:34,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:44:34,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:44:34,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:44:34,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:44:34,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:44:34,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:44:34,585 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:44:34,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:44:34,586 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:44:34,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:44:34,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:44:34,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:44:34,588 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:44:34,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:44:34,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:44:34,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:44:34,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:44:34,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:44:34,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:44:34,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:44:34,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:44:34,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:44:34,590 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:44:35,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:44:35,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:44:35,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:44:35,075 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:44:35,075 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:44:35,076 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0910b.c [2020-10-27 19:44:35,173 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/124ca50e8/bade9b911a034941b5cca0660f180b85/FLAG418b41179 [2020-10-27 19:44:35,909 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:44:35,914 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0910b.c [2020-10-27 19:44:35,923 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/124ca50e8/bade9b911a034941b5cca0660f180b85/FLAG418b41179 [2020-10-27 19:44:36,216 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/124ca50e8/bade9b911a034941b5cca0660f180b85 [2020-10-27 19:44:36,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:44:36,228 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:44:36,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:44:36,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:44:36,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:44:36,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:44:36" (1/1) ... [2020-10-27 19:44:36,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4825ec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:36, skipping insertion in model container [2020-10-27 19:44:36,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:44:36" (1/1) ... [2020-10-27 19:44:36,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:44:36,293 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:44:36,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:44:36,535 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:44:36,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:44:36,622 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:44:36,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:36 WrapperNode [2020-10-27 19:44:36,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:44:36,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:44:36,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:44:36,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:44:36,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:36" (1/1) ... [2020-10-27 19:44:36,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:36" (1/1) ... [2020-10-27 19:44:36,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:36" (1/1) ... [2020-10-27 19:44:36,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:36" (1/1) ... [2020-10-27 19:44:36,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:36" (1/1) ... [2020-10-27 19:44:36,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:36" (1/1) ... [2020-10-27 19:44:36,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:36" (1/1) ... [2020-10-27 19:44:36,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:44:36,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:44:36,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:44:36,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:44:36,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:36" (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 19:44:36,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:44:36,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:44:36,813 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:44:36,813 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-10-27 19:44:36,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_logf [2020-10-27 19:44:36,813 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:44:36,814 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:44:36,814 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:44:36,814 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:44:36,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:44:36,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 19:44:36,817 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-10-27 19:44:36,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 19:44:36,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:44:36,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:44:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_logf [2020-10-27 19:44:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:44:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 19:44:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:44:36,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:44:36,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:44:36,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:44:37,424 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:44:37,425 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-27 19:44:37,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:44:37 BoogieIcfgContainer [2020-10-27 19:44:37,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:44:37,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:44:37,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:44:37,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:44:37,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:44:36" (1/3) ... [2020-10-27 19:44:37,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cdbb5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:44:37, skipping insertion in model container [2020-10-27 19:44:37,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:36" (2/3) ... [2020-10-27 19:44:37,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cdbb5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:44:37, skipping insertion in model container [2020-10-27 19:44:37,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:44:37" (3/3) ... [2020-10-27 19:44:37,443 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0910b.c [2020-10-27 19:44:37,456 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:44:37,461 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:44:37,475 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:44:37,501 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:44:37,501 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:44:37,501 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:44:37,501 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:44:37,501 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:44:37,502 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:44:37,502 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:44:37,502 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:44:37,521 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-10-27 19:44:37,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 19:44:37,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:44:37,530 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 19:44:37,530 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:44:37,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:44:37,537 INFO L82 PathProgramCache]: Analyzing trace with hash -874580844, now seen corresponding path program 1 times [2020-10-27 19:44:37,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:44:37,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512070897] [2020-10-27 19:44:37,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:44:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:44:37,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:37,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:37,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:44:37,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 19:44:37,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:44:37,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-27 19:44:37,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:44:37,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:44:37,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-27 19:44:37,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:44:37,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:44:38,247 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 19:44:38,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:44:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:44:38,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:38,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:44:38,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:44:38,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:44:38,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 19:44:38,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:44:38,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:44:38,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:44:38,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:44:38,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:44:38,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:44:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:44:38,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:38,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:38,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:44:38,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 19:44:38,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:44:38,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 19:44:38,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:44:38,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:44:38,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 19:44:38,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:44:38,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:44:38,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 19:44:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:44:38,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:38,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:44:38,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:44:38,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:44:38,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 19:44:38,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:44:38,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:44:38,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 19:44:38,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:44:38,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:44:38,373 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 19:44:38,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512070897] [2020-10-27 19:44:38,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:44:38,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:44:38,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822901213] [2020-10-27 19:44:38,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:44:38,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:44:38,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:44:38,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:44:38,405 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 4 states. [2020-10-27 19:44:38,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:44:38,691 INFO L93 Difference]: Finished difference Result 89 states and 129 transitions. [2020-10-27 19:44:38,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 19:44:38,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-27 19:44:38,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:44:38,703 INFO L225 Difference]: With dead ends: 89 [2020-10-27 19:44:38,703 INFO L226 Difference]: Without dead ends: 43 [2020-10-27 19:44:38,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:44:38,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-27 19:44:38,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-27 19:44:38,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-27 19:44:38,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2020-10-27 19:44:38,756 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 24 [2020-10-27 19:44:38,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:44:38,756 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2020-10-27 19:44:38,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:44:38,757 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2020-10-27 19:44:38,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 19:44:38,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:44:38,758 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 19:44:38,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:44:38,759 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:44:38,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:44:38,760 INFO L82 PathProgramCache]: Analyzing trace with hash 2053326009, now seen corresponding path program 1 times [2020-10-27 19:44:38,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:44:38,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845556972] [2020-10-27 19:44:38,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:44:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 19:44:38,812 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 19:44:38,812 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 19:44:38,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:44:38,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:44:38 BoogieIcfgContainer [2020-10-27 19:44:38,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:44:38,838 INFO L168 Benchmark]: Toolchain (without parser) took 2614.90 ms. Allocated memory was 163.6 MB in the beginning and 210.8 MB in the end (delta: 47.2 MB). Free memory was 143.5 MB in the beginning and 129.0 MB in the end (delta: 14.5 MB). Peak memory consumption was 60.3 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:38,838 INFO L168 Benchmark]: CDTParser took 0.58 ms. Allocated memory is still 163.6 MB. Free memory is still 134.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:44:38,839 INFO L168 Benchmark]: CACSL2BoogieTranslator took 393.16 ms. Allocated memory is still 163.6 MB. Free memory was 143.0 MB in the beginning and 146.1 MB in the end (delta: -3.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:38,840 INFO L168 Benchmark]: Boogie Preprocessor took 108.07 ms. Allocated memory is still 163.6 MB. Free memory was 146.1 MB in the beginning and 143.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:38,841 INFO L168 Benchmark]: RCFGBuilder took 687.66 ms. Allocated memory is still 163.6 MB. Free memory was 143.6 MB in the beginning and 120.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:38,842 INFO L168 Benchmark]: TraceAbstraction took 1407.27 ms. Allocated memory was 163.6 MB in the beginning and 210.8 MB in the end (delta: 47.2 MB). Free memory was 120.1 MB in the beginning and 129.0 MB in the end (delta: -9.0 MB). Peak memory consumption was 37.9 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:38,846 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 ms. Allocated memory is still 163.6 MB. Free memory is still 134.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 393.16 ms. Allocated memory is still 163.6 MB. Free memory was 143.0 MB in the beginning and 146.1 MB in the end (delta: -3.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 108.07 ms. Allocated memory is still 163.6 MB. Free memory was 146.1 MB in the beginning and 143.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 687.66 ms. Allocated memory is still 163.6 MB. Free memory was 143.6 MB in the beginning and 120.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1407.27 ms. Allocated memory was 163.6 MB in the beginning and 210.8 MB in the end (delta: 47.2 MB). Free memory was 120.1 MB in the beginning and 129.0 MB in the end (delta: -9.0 MB). Peak memory consumption was 37.9 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 someUnaryFLOAToperation at line 118, overapproximation of someBinaryArithmeticFLOAToperation at line 46, overapproximation of bitwiseAnd at line 22. Possible FailurePath: [L26-L30] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L32] static const float zero_log = 0.0; [L118] float x = -0.0f; [L119] CALL, EXPR __ieee754_logf(x) [L35] float hfsq, f, s, z, R, w, t1, t2, dk; [L36] __int32_t k, ix, i, j; [L39] ieee_float_shape_type gf_u; [L40] gf_u.value = (x) [L41] EXPR gf_u.word [L41] (ix) = gf_u.word [L44] k = 0 [L45] COND TRUE ((ix & 0x7fffffff) == 0) [L46] return -two25_log / zero_log; [L119] RET, EXPR __ieee754_logf(x) [L119] float res = __ieee754_logf(x); [L122] CALL, EXPR isinf_float(res) [L16] __int32_t ix; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (ix) = gf_u.word [L22] ix &= 0x7fffffff [L23] return ((ix) == 0x7f800000L); [L122] RET, EXPR isinf_float(res) [L122] COND TRUE !isinf_float(res) [L123] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0910b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 8 SDslu, 46 SDs, 0 SdLazy, 53 SolverSat, 7 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, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred 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, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 2530 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...