/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_0620b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:27:44,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:27:44,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:27:44,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:27:44,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:27:44,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:27:44,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:27:44,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:27:44,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:27:44,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:27:44,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:27:44,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:27:44,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:27:44,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:27:44,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:27:44,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:27:44,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:27:44,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:27:44,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:27:44,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:27:44,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:27:44,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:27:44,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:27:44,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:27:44,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:27:44,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:27:44,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:27:44,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:27:44,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:27:44,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:27:44,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:27:44,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:27:44,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:27:44,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:27:44,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:27:44,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:27:44,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:27:44,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:27:44,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:27:44,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:27:44,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:27:44,474 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 [2020-10-28 14:27:44,528 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:27:44,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:27:44,533 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:27:44,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:27:44,533 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:27:44,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:27:44,534 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:27:44,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:27:44,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:27:44,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:27:44,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:27:44,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:27:44,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:27:44,536 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:27:44,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:27:44,537 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:27:44,537 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:27:44,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:27:44,537 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:27:44,538 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:27:44,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:27:44,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:27:44,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:27:44,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:27:44,539 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:27:44,539 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:27:44,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:27:44,539 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:27:44,539 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:27:44,540 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:27:45,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:27:45,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:27:45,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:27:45,045 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:27:45,046 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:27:45,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0620b.c [2020-10-28 14:27:45,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f375d8288/2de85e3c95884692b3b9c740dd24d923/FLAG8885a6acd [2020-10-28 14:27:45,883 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:27:45,889 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0620b.c [2020-10-28 14:27:45,898 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f375d8288/2de85e3c95884692b3b9c740dd24d923/FLAG8885a6acd [2020-10-28 14:27:46,250 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f375d8288/2de85e3c95884692b3b9c740dd24d923 [2020-10-28 14:27:46,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:27:46,260 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:27:46,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:27:46,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:27:46,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:27:46,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:27:46" (1/1) ... [2020-10-28 14:27:46,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4419df93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:46, skipping insertion in model container [2020-10-28 14:27:46,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:27:46" (1/1) ... [2020-10-28 14:27:46,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:27:46,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:27:46,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:27:46,528 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:27:46,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:27:46,603 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:27:46,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:46 WrapperNode [2020-10-28 14:27:46,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:27:46,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:27:46,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:27:46,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:27:46,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:46" (1/1) ... [2020-10-28 14:27:46,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:46" (1/1) ... [2020-10-28 14:27:46,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:46" (1/1) ... [2020-10-28 14:27:46,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:46" (1/1) ... [2020-10-28 14:27:46,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:46" (1/1) ... [2020-10-28 14:27:46,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:46" (1/1) ... [2020-10-28 14:27:46,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:46" (1/1) ... [2020-10-28 14:27:46,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:27:46,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:27:46,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:27:46,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:27:46,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:46" (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 [2020-10-28 14:27:46,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:27:46,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:27:46,764 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:27:46,765 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-28 14:27:46,765 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-28 14:27:46,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-28 14:27:46,766 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:27:46,766 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:27:46,766 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:27:46,766 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:27:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:27:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-28 14:27:46,769 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-28 14:27:46,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:27:46,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:27:46,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:27:46,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:27:46,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:27:46,771 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-28 14:27:46,772 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-28 14:27:46,772 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:27:46,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:27:46,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:27:46,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-28 14:27:46,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:27:47,333 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:27:47,334 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-28 14:27:47,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:27:47 BoogieIcfgContainer [2020-10-28 14:27:47,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:27:47,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:27:47,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:27:47,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:27:47,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:27:46" (1/3) ... [2020-10-28 14:27:47,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501e76a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:27:47, skipping insertion in model container [2020-10-28 14:27:47,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:46" (2/3) ... [2020-10-28 14:27:47,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501e76a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:27:47, skipping insertion in model container [2020-10-28 14:27:47,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:27:47" (3/3) ... [2020-10-28 14:27:47,350 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620b.c [2020-10-28 14:27:47,364 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:27:47,370 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:27:47,385 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:27:47,444 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:27:47,444 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:27:47,444 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:27:47,445 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:27:47,445 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:27:47,445 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:27:47,445 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:27:47,445 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:27:47,465 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-10-28 14:27:47,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 14:27:47,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:27:47,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:27:47,471 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:27:47,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:27:47,478 INFO L82 PathProgramCache]: Analyzing trace with hash -75419188, now seen corresponding path program 1 times [2020-10-28 14:27:47,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:27:47,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283587294] [2020-10-28 14:27:47,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:27:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:47,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:47,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:47,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:27:47,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:47,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-28 14:27:47,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:47,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:47,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:47,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 14:27:47,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:47,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:27:48,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:27:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:48,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:48,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:48,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:27:48,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:48,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 14:27:48,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:48,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:48,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:48,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:27:48,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:48,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:27:48,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:27:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:48,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:48,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:48,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:27:48,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:48,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:27:48,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:48,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:48,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:48,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:27:48,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:48,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:27:48,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:27:48,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283587294] [2020-10-28 14:27:48,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:27:48,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:27:48,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586751439] [2020-10-28 14:27:48,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:27:48,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:27:48,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:27:48,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:27:48,267 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 4 states. [2020-10-28 14:27:48,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:27:48,647 INFO L93 Difference]: Finished difference Result 105 states and 148 transitions. [2020-10-28 14:27:48,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:27:48,649 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-28 14:27:48,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:27:48,660 INFO L225 Difference]: With dead ends: 105 [2020-10-28 14:27:48,660 INFO L226 Difference]: Without dead ends: 51 [2020-10-28 14:27:48,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:27:48,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-28 14:27:48,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-28 14:27:48,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-28 14:27:48,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2020-10-28 14:27:48,717 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 19 [2020-10-28 14:27:48,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:27:48,718 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2020-10-28 14:27:48,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:27:48,718 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2020-10-28 14:27:48,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-28 14:27:48,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:27:48,720 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] [2020-10-28 14:27:48,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:27:48,720 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:27:48,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:27:48,721 INFO L82 PathProgramCache]: Analyzing trace with hash 960537085, now seen corresponding path program 1 times [2020-10-28 14:27:48,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:27:48,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829103262] [2020-10-28 14:27:48,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:27:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:27:48,774 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:27:48,774 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:27:48,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:27:48,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:27:48 BoogieIcfgContainer [2020-10-28 14:27:48,798 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:27:48,801 INFO L168 Benchmark]: Toolchain (without parser) took 2544.68 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 131.0 MB in the beginning and 149.2 MB in the end (delta: -18.1 MB). Peak memory consumption was 14.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:48,802 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 156.2 MB. Free memory is still 129.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:27:48,803 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.65 ms. Allocated memory is still 156.2 MB. Free memory was 130.4 MB in the beginning and 118.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:48,803 INFO L168 Benchmark]: Boogie Preprocessor took 61.97 ms. Allocated memory is still 156.2 MB. Free memory was 118.3 MB in the beginning and 116.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:48,808 INFO L168 Benchmark]: RCFGBuilder took 667.76 ms. Allocated memory is still 156.2 MB. Free memory was 115.9 MB in the beginning and 124.4 MB in the end (delta: -8.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:48,809 INFO L168 Benchmark]: TraceAbstraction took 1458.19 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 123.8 MB in the beginning and 149.2 MB in the end (delta: -25.3 MB). Peak memory consumption was 6.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:48,813 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 156.2 MB. Free memory is still 129.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 342.65 ms. Allocated memory is still 156.2 MB. Free memory was 130.4 MB in the beginning and 118.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 61.97 ms. Allocated memory is still 156.2 MB. Free memory was 118.3 MB in the beginning and 116.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 667.76 ms. Allocated memory is still 156.2 MB. Free memory was 115.9 MB in the beginning and 124.4 MB in the end (delta: -8.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1458.19 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 123.8 MB in the beginning and 149.2 MB in the end (delta: -25.3 MB). Peak memory consumption was 6.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 143, overapproximation of someUnaryDOUBLEoperation at line 46, overapproximation of bitwiseAnd at line 64, overapproximation of someUnaryFLOAToperation at line 139, overapproximation of someBinaryArithmeticFLOAToperation at line 67. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L31-L36] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L38-L43] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L45-L49] 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, }; [L51-L53] 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; [L139] float x = -0.0f; [L140] CALL, EXPR atan_float(x) [L56] float w, s1, s2, z; [L57] __int32_t ix, hx, id; [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (hx) = gf_u.word [L64] ix = hx & 0x7fffffff [L65] COND TRUE ix >= 0x50800000 [L66] COND TRUE ((ix) > 0x7f800000L) [L67] return x + x; [L140] RET, EXPR atan_float(x) [L140] float res = atan_float(x); [L143] EXPR res == -0.0f && __signbit_float(res) == 1 [L143] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L144] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0620b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 62 SDtfs, 10 SDslu, 54 SDs, 0 SdLazy, 60 SolverSat, 10 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, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred 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, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 1728 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...