/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=BIGGEST --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 -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0620a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:32:18,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:32:18,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:32:18,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:32:18,462 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:32:18,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:32:18,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:32:18,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:32:18,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:32:18,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:32:18,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:32:18,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:32:18,481 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:32:18,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:32:18,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:32:18,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:32:18,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:32:18,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:32:18,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:32:18,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:32:18,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:32:18,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:32:18,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:32:18,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:32:18,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:32:18,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:32:18,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:32:18,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:32:18,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:32:18,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:32:18,499 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:32:18,500 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:32:18,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:32:18,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:32:18,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:32:18,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:32:18,503 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:32:18,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:32:18,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:32:18,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:32:18,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:32:18,509 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 [2020-10-12 15:32:18,550 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:32:18,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:32:18,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:32:18,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:32:18,553 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:32:18,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:32:18,553 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:32:18,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:32:18,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:32:18,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:32:18,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:32:18,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:32:18,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:32:18,556 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:32:18,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:32:18,556 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:32:18,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:32:18,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:32:18,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:32:18,557 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:32:18,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:32:18,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:32:18,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:32:18,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:32:18,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:32:18,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:32:18,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:32:18,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:32:18,559 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:32:18,559 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:32:18,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:32:18,854 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:32:18,858 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:32:18,859 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:32:18,860 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:32:18,861 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0620a.c [2020-10-12 15:32:18,922 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d5925fb1/d2d10d7e8975438485c1e60b5aeb9004/FLAGe5ae9e7f5 [2020-10-12 15:32:19,446 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:32:19,447 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0620a.c [2020-10-12 15:32:19,458 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d5925fb1/d2d10d7e8975438485c1e60b5aeb9004/FLAGe5ae9e7f5 [2020-10-12 15:32:19,783 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d5925fb1/d2d10d7e8975438485c1e60b5aeb9004 [2020-10-12 15:32:19,792 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:32:19,793 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:32:19,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:32:19,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:32:19,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:32:19,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:32:19" (1/1) ... [2020-10-12 15:32:19,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a74515d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:19, skipping insertion in model container [2020-10-12 15:32:19,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:32:19" (1/1) ... [2020-10-12 15:32:19,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:32:19,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:32:20,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:32:20,141 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:32:20,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:32:20,299 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:32:20,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:20 WrapperNode [2020-10-12 15:32:20,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:32:20,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:32:20,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:32:20,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:32:20,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:20" (1/1) ... [2020-10-12 15:32:20,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:20" (1/1) ... [2020-10-12 15:32:20,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:20" (1/1) ... [2020-10-12 15:32:20,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:20" (1/1) ... [2020-10-12 15:32:20,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:20" (1/1) ... [2020-10-12 15:32:20,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:20" (1/1) ... [2020-10-12 15:32:20,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:20" (1/1) ... [2020-10-12 15:32:20,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:32:20,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:32:20,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:32:20,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:32:20,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:20" (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 [2020-10-12 15:32:20,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:32:20,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:32:20,436 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-12 15:32:20,436 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-12 15:32:20,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-12 15:32:20,437 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:32:20,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:32:20,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-12 15:32:20,437 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-12 15:32:20,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 15:32:20,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-12 15:32:20,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:32:20,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:32:20,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:32:20,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-12 15:32:20,438 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-12 15:32:20,439 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-12 15:32:20,439 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:32:20,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:32:20,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-12 15:32:20,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:32:20,868 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:32:20,868 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-12 15:32:20,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:32:20 BoogieIcfgContainer [2020-10-12 15:32:20,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:32:20,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:32:20,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:32:20,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:32:20,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:32:19" (1/3) ... [2020-10-12 15:32:20,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c272303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:32:20, skipping insertion in model container [2020-10-12 15:32:20,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:20" (2/3) ... [2020-10-12 15:32:20,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c272303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:32:20, skipping insertion in model container [2020-10-12 15:32:20,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:32:20" (3/3) ... [2020-10-12 15:32:20,881 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620a.c [2020-10-12 15:32:20,892 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:32:20,900 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:32:20,913 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:32:20,935 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:32:20,935 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:32:20,936 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:32:20,936 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:32:20,936 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:32:20,936 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:32:20,936 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:32:20,936 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:32:20,957 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-12 15:32:20,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-12 15:32:20,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:32:20,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:32:20,966 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:32:20,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:32:20,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1825925930, now seen corresponding path program 1 times [2020-10-12 15:32:20,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:32:20,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449558211] [2020-10-12 15:32:20,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:32:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:32:21,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:32:21,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:32:21,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 15:32:21,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:32:21,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-12 15:32:21,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:32:21,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:32:21,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 15:32:21,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:32:21,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:32:21,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:32:21,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:32:21,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:32:21,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:32:21,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:32:21,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:32:21,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 15:32:21,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:32:21,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:32:21,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:32:21,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:32:21,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:32:21,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:32:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:32:21,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:32:21,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:32:21,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 15:32:21,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:32:21,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 15:32:21,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:32:21,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:32:21,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 15:32:21,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:32:21,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:32:21,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:32:21,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449558211] [2020-10-12 15:32:21,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:32:21,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:32:21,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114868655] [2020-10-12 15:32:21,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:32:21,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:32:21,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:32:21,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:32:21,747 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2020-10-12 15:32:22,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:32:22,052 INFO L93 Difference]: Finished difference Result 100 states and 142 transitions. [2020-10-12 15:32:22,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:32:22,054 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-12 15:32:22,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:32:22,065 INFO L225 Difference]: With dead ends: 100 [2020-10-12 15:32:22,065 INFO L226 Difference]: Without dead ends: 50 [2020-10-12 15:32:22,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:32:22,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-12 15:32:22,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-12 15:32:22,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-12 15:32:22,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2020-10-12 15:32:22,114 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 18 [2020-10-12 15:32:22,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:32:22,115 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2020-10-12 15:32:22,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:32:22,115 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2020-10-12 15:32:22,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-12 15:32:22,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:32:22,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:32:22,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:32:22,118 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:32:22,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:32:22,118 INFO L82 PathProgramCache]: Analyzing trace with hash -939815554, now seen corresponding path program 1 times [2020-10-12 15:32:22,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:32:22,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740609562] [2020-10-12 15:32:22,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:32:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 15:32:22,170 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 15:32:22,170 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 15:32:22,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:32:22,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:32:22 BoogieIcfgContainer [2020-10-12 15:32:22,193 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:32:22,196 INFO L168 Benchmark]: Toolchain (without parser) took 2402.00 ms. Allocated memory was 141.0 MB in the beginning and 234.4 MB in the end (delta: 93.3 MB). Free memory was 103.9 MB in the beginning and 178.9 MB in the end (delta: -75.0 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. [2020-10-12 15:32:22,197 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.1 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-12 15:32:22,198 INFO L168 Benchmark]: CACSL2BoogieTranslator took 506.36 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 103.5 MB in the beginning and 179.1 MB in the end (delta: -75.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-10-12 15:32:22,199 INFO L168 Benchmark]: Boogie Preprocessor took 67.13 ms. Allocated memory is still 203.4 MB. Free memory was 179.1 MB in the beginning and 176.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-10-12 15:32:22,200 INFO L168 Benchmark]: RCFGBuilder took 504.55 ms. Allocated memory is still 203.4 MB. Free memory was 176.3 MB in the beginning and 150.7 MB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-10-12 15:32:22,201 INFO L168 Benchmark]: TraceAbstraction took 1319.25 ms. Allocated memory was 203.4 MB in the beginning and 234.4 MB in the end (delta: 30.9 MB). Free memory was 149.8 MB in the beginning and 178.9 MB in the end (delta: -29.1 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-10-12 15:32:22,205 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.1 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 506.36 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 103.5 MB in the beginning and 179.1 MB in the end (delta: -75.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.13 ms. Allocated memory is still 203.4 MB. Free memory was 179.1 MB in the beginning and 176.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 504.55 ms. Allocated memory is still 203.4 MB. Free memory was 176.3 MB in the beginning and 150.7 MB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1319.25 ms. Allocated memory was 203.4 MB in the beginning and 234.4 MB in the end (delta: 30.9 MB). Free memory was 149.8 MB in the beginning and 178.9 MB in the end (delta: -29.1 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 142]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 141, overapproximation of someUnaryDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 62, overapproximation of someBinaryArithmeticFLOAToperation at line 65. Possible FailurePath: [L12] static const float huge_floor = 1.0e30; [L29-L34] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L36-L41] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L43-L47] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L49-L51] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L137] float x = 0.0f; [L138] CALL, EXPR atan_float(x) [L54] float w, s1, s2, z; [L55] __int32_t ix, hx, id; [L58] ieee_float_shape_type gf_u; [L59] gf_u.value = (x) [L60] EXPR gf_u.word [L60] (hx) = gf_u.word [L62] ix = hx & 0x7fffffff [L63] COND TRUE ix >= 0x50800000 [L64] COND TRUE ((ix) > 0x7f800000L) [L65] return x + x; [L138] RET, EXPR atan_float(x) [L138] float res = atan_float(x); [L141] EXPR res == 0.0f && __signbit_float(res) == 0 [L141] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L142] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 8 SDslu, 55 SDs, 0 SdLazy, 61 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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, 0.5s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 1309 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...