/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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 [2020-10-29 09:08:03,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:08:03,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:08:03,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:08:03,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:08:03,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:08:03,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:08:03,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:08:03,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:08:03,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:08:03,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:08:03,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:08:03,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:08:03,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:08:03,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:08:03,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:08:03,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:08:03,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:08:03,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:08:03,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:08:03,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:08:03,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:08:03,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:08:03,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:08:03,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:08:03,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:08:03,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:08:03,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:08:03,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:08:03,788 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:08:03,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:08:03,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:08:03,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:08:03,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:08:03,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:08:03,795 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:08:03,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:08:03,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:08:03,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:08:03,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:08:03,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:08:03,801 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 [2020-10-29 09:08:03,829 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:08:03,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:08:03,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:08:03,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:08:03,831 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:08:03,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:08:03,832 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:08:03,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:08:03,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:08:03,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:08:03,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:08:03,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:08:03,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:08:03,834 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:08:03,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:08:03,834 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:08:03,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:08:03,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:08:03,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:08:03,835 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:08:03,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:08:03,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:08:03,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:08:03,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:08:03,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:08:03,837 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:08:03,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:08:03,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:08:03,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:08:03,838 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:08:04,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:08:04,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:08:04,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:08:04,260 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:08:04,261 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:08:04,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0620b.c [2020-10-29 09:08:04,356 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43e757e7e/0dcaf56166ce4d51b7c64579f59c2b85/FLAG6ac76bd7e [2020-10-29 09:08:05,098 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:08:05,100 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0620b.c [2020-10-29 09:08:05,111 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43e757e7e/0dcaf56166ce4d51b7c64579f59c2b85/FLAG6ac76bd7e [2020-10-29 09:08:05,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43e757e7e/0dcaf56166ce4d51b7c64579f59c2b85 [2020-10-29 09:08:05,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:08:05,429 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:08:05,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:08:05,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:08:05,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:08:05,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:08:05" (1/1) ... [2020-10-29 09:08:05,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66498f60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:05, skipping insertion in model container [2020-10-29 09:08:05,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:08:05" (1/1) ... [2020-10-29 09:08:05,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:08:05,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:08:05,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:08:05,715 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:08:05,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:08:05,789 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:08:05,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:05 WrapperNode [2020-10-29 09:08:05,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:08:05,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:08:05,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:08:05,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:08:05,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:05" (1/1) ... [2020-10-29 09:08:05,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:05" (1/1) ... [2020-10-29 09:08:05,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:05" (1/1) ... [2020-10-29 09:08:05,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:05" (1/1) ... [2020-10-29 09:08:05,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:05" (1/1) ... [2020-10-29 09:08:05,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:05" (1/1) ... [2020-10-29 09:08:05,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:05" (1/1) ... [2020-10-29 09:08:05,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:08:05,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:08:05,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:08:05,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:08:05,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:05" (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 [2020-10-29 09:08:05,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:08:05,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:08:05,932 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:08:05,933 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-29 09:08:05,933 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-29 09:08:05,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-29 09:08:05,933 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:08:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:08:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:08:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:08:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:08:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-29 09:08:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-29 09:08:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-29 09:08:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:08:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:08:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:08:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-29 09:08:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-29 09:08:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-29 09:08:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:08:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:08:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:08:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-29 09:08:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:08:06,509 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:08:06,510 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-29 09:08:06,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:08:06 BoogieIcfgContainer [2020-10-29 09:08:06,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:08:06,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:08:06,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:08:06,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:08:06,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:08:05" (1/3) ... [2020-10-29 09:08:06,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a710b11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:08:06, skipping insertion in model container [2020-10-29 09:08:06,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:05" (2/3) ... [2020-10-29 09:08:06,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a710b11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:08:06, skipping insertion in model container [2020-10-29 09:08:06,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:08:06" (3/3) ... [2020-10-29 09:08:06,521 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620b.c [2020-10-29 09:08:06,534 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:08:06,539 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:08:06,553 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:08:06,581 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:08:06,582 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:08:06,582 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:08:06,582 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:08:06,582 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:08:06,582 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:08:06,582 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:08:06,583 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:08:06,601 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-10-29 09:08:06,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-29 09:08:06,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:06,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:08:06,610 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:06,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:06,616 INFO L82 PathProgramCache]: Analyzing trace with hash -75419188, now seen corresponding path program 1 times [2020-10-29 09:08:06,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:06,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600705528] [2020-10-29 09:08:06,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:06,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:07,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:07,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:08:07,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:07,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-29 09:08:07,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:07,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:07,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:07,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 09:08:07,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:07,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:08:07,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:08:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:07,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:07,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:07,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:08:07,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:07,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 09:08:07,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:07,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:07,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:07,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:08:07,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:07,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:08:07,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:08:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:07,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:07,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:07,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:08:07,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:07,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:08:07,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:07,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:07,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:07,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 09:08:07,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:07,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:08:07,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:08:07,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600705528] [2020-10-29 09:08:07,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:08:07,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:08:07,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389754336] [2020-10-29 09:08:07,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:08:07,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:08:07,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:08:07,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:08:07,318 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 4 states. [2020-10-29 09:08:07,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:08:07,680 INFO L93 Difference]: Finished difference Result 105 states and 148 transitions. [2020-10-29 09:08:07,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:08:07,682 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-29 09:08:07,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:08:07,691 INFO L225 Difference]: With dead ends: 105 [2020-10-29 09:08:07,691 INFO L226 Difference]: Without dead ends: 51 [2020-10-29 09:08:07,695 INFO L677 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 [2020-10-29 09:08:07,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-29 09:08:07,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-29 09:08:07,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 09:08:07,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2020-10-29 09:08:07,744 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 19 [2020-10-29 09:08:07,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:08:07,744 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2020-10-29 09:08:07,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:08:07,745 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2020-10-29 09:08:07,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 09:08:07,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:07,748 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] [2020-10-29 09:08:07,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:08:07,749 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:07,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:07,750 INFO L82 PathProgramCache]: Analyzing trace with hash 960537085, now seen corresponding path program 1 times [2020-10-29 09:08:07,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:07,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031399262] [2020-10-29 09:08:07,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:08:07,801 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:08:07,802 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:08:07,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:08:07,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:08:07 BoogieIcfgContainer [2020-10-29 09:08:07,825 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:08:07,828 INFO L168 Benchmark]: Toolchain (without parser) took 2403.06 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 108.2 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:07,828 INFO L168 Benchmark]: CDTParser took 0.68 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:08:07,829 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.56 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 113.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:07,830 INFO L168 Benchmark]: Boogie Preprocessor took 59.54 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 111.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:07,831 INFO L168 Benchmark]: RCFGBuilder took 660.05 ms. Allocated memory is still 151.0 MB. Free memory was 111.2 MB in the beginning and 117.7 MB in the end (delta: -6.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:07,832 INFO L168 Benchmark]: TraceAbstraction took 1311.34 ms. Allocated memory is still 151.0 MB. Free memory was 117.2 MB in the beginning and 108.2 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:07,836 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 359.56 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 113.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 59.54 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 111.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 660.05 ms. Allocated memory is still 151.0 MB. Free memory was 111.2 MB in the beginning and 117.7 MB in the end (delta: -6.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1311.34 ms. Allocated memory is still 151.0 MB. Free memory was 117.2 MB in the beginning and 108.2 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 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: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, 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, 0.1s 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, 0.4s 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...