/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0281.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:02:56,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:02:56,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:02:57,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:02:57,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:02:57,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:02:57,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:02:57,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:02:57,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:02:57,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:02:57,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:02:57,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:02:57,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:02:57,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:02:57,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:02:57,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:02:57,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:02:57,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:02:57,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:02:57,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:02:57,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:02:57,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:02:57,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:02:57,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:02:57,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:02:57,108 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:02:57,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:02:57,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:02:57,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:02:57,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:02:57,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:02:57,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:02:57,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:02:57,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:02:57,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:02:57,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:02:57,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:02:57,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:02:57,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:02:57,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:02:57,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:02:57,122 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 01:02:57,173 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:02:57,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:02:57,178 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:02:57,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:02:57,178 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:02:57,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:02:57,179 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:02:57,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:02:57,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:02:57,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:02:57,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:02:57,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:02:57,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:02:57,181 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:02:57,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:02:57,182 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:02:57,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:02:57,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:02:57,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:02:57,183 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:02:57,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:02:57,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:02:57,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:02:57,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:02:57,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:02:57,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:02:57,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:02:57,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:02:57,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:02:57,185 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:02:57,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:02:57,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:02:57,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:02:57,636 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:02:57,637 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:02:57,638 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0281.c [2020-10-27 01:02:57,717 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a9257562/ff378b4f8e1c4715af7f6f7b2cdf3fd9/FLAG15678c0ae [2020-10-27 01:02:58,302 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:02:58,303 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0281.c [2020-10-27 01:02:58,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a9257562/ff378b4f8e1c4715af7f6f7b2cdf3fd9/FLAG15678c0ae [2020-10-27 01:02:58,668 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a9257562/ff378b4f8e1c4715af7f6f7b2cdf3fd9 [2020-10-27 01:02:58,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:02:58,681 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:02:58,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:02:58,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:02:58,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:02:58,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:02:58" (1/1) ... [2020-10-27 01:02:58,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cfc022e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:58, skipping insertion in model container [2020-10-27 01:02:58,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:02:58" (1/1) ... [2020-10-27 01:02:58,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:02:58,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:02:58,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:02:59,005 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:02:59,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:02:59,128 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:02:59,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:59 WrapperNode [2020-10-27 01:02:59,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:02:59,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:02:59,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:02:59,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:02:59,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:59" (1/1) ... [2020-10-27 01:02:59,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:59" (1/1) ... [2020-10-27 01:02:59,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:59" (1/1) ... [2020-10-27 01:02:59,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:59" (1/1) ... [2020-10-27 01:02:59,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:59" (1/1) ... [2020-10-27 01:02:59,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:59" (1/1) ... [2020-10-27 01:02:59,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:59" (1/1) ... [2020-10-27 01:02:59,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:02:59,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:02:59,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:02:59,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:02:59,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:02:59,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:02:59,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:02:59,341 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:02:59,342 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-27 01:02:59,342 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-10-27 01:02:59,342 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-27 01:02:59,342 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_asinf [2020-10-27 01:02:59,342 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:02:59,343 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:02:59,343 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:02:59,344 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:02:59,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:02:59,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 01:02:59,344 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-27 01:02:59,344 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-10-27 01:02:59,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:02:59,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:02:59,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:02:59,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:02:59,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:02:59,346 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-27 01:02:59,346 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_asinf [2020-10-27 01:02:59,347 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:02:59,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:02:59,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:02:59,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:02:59,987 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:02:59,987 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-27 01:02:59,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:02:59 BoogieIcfgContainer [2020-10-27 01:02:59,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:02:59,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:02:59,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:02:59,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:02:59,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:02:58" (1/3) ... [2020-10-27 01:02:59,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a17eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:02:59, skipping insertion in model container [2020-10-27 01:02:59,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:59" (2/3) ... [2020-10-27 01:02:59,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a17eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:02:59, skipping insertion in model container [2020-10-27 01:02:59,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:02:59" (3/3) ... [2020-10-27 01:02:59,998 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0281.c [2020-10-27 01:03:00,010 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:03:00,015 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:03:00,028 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:03:00,055 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:03:00,055 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:03:00,056 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:03:00,056 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:03:00,056 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:03:00,056 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:03:00,056 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:03:00,056 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:03:00,075 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2020-10-27 01:03:00,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 01:03:00,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:03:00,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:03:00,083 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:03:00,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:03:00,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1023498541, now seen corresponding path program 1 times [2020-10-27 01:03:00,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:03:00,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869932554] [2020-10-27 01:03:00,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:03:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:00,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:00,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:00,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 01:03:00,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:03:00,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-27 01:03:00,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:00,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:00,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 01:03:00,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:00,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 01:03:00,678 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-27 01:03:00,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:03:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:00,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:00,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:00,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:03:00,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:03:00,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 01:03:00,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:00,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:00,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:03:00,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:00,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:03:00,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 01:03:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:00,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:00,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:00,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:03:00,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:03:00,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:03:00,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:00,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:00,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:03:00,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:00,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:03:00,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:03:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:00,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:00,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:00,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:03:00,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:03:00,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:03:00,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:00,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:00,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:03:00,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:00,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:03:00,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:03:00,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869932554] [2020-10-27 01:03:00,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:03:00,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:03:00,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091191472] [2020-10-27 01:03:00,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:03:00,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:03:00,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:03:00,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:03:00,836 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 4 states. [2020-10-27 01:03:01,007 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 01:03:01,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:03:01,327 INFO L93 Difference]: Finished difference Result 155 states and 227 transitions. [2020-10-27 01:03:01,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:03:01,329 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-27 01:03:01,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:03:01,339 INFO L225 Difference]: With dead ends: 155 [2020-10-27 01:03:01,339 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 01:03:01,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:03:01,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 01:03:01,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-27 01:03:01,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-27 01:03:01,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 91 transitions. [2020-10-27 01:03:01,394 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 91 transitions. Word has length 23 [2020-10-27 01:03:01,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:03:01,395 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 91 transitions. [2020-10-27 01:03:01,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:03:01,395 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 91 transitions. [2020-10-27 01:03:01,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 01:03:01,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:03:01,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:03:01,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:03:01,397 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:03:01,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:03:01,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1077380638, now seen corresponding path program 1 times [2020-10-27 01:03:01,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:03:01,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953588262] [2020-10-27 01:03:01,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:03:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:03:01,443 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:03:01,444 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:03:01,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:03:01,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:03:01 BoogieIcfgContainer [2020-10-27 01:03:01,469 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:03:01,471 INFO L168 Benchmark]: Toolchain (without parser) took 2795.78 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 87.2 MB in the end (delta: 38.3 MB). Peak memory consumption was 38.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:01,473 INFO L168 Benchmark]: CDTParser took 0.62 ms. Allocated memory is still 151.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:03:01,474 INFO L168 Benchmark]: CACSL2BoogieTranslator took 443.88 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 111.4 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:01,476 INFO L168 Benchmark]: Boogie Preprocessor took 121.94 ms. Allocated memory is still 151.0 MB. Free memory was 111.4 MB in the beginning and 109.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:01,477 INFO L168 Benchmark]: RCFGBuilder took 735.26 ms. Allocated memory is still 151.0 MB. Free memory was 109.0 MB in the beginning and 110.9 MB in the end (delta: -1.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:01,478 INFO L168 Benchmark]: TraceAbstraction took 1478.54 ms. Allocated memory is still 151.0 MB. Free memory was 110.4 MB in the beginning and 87.2 MB in the end (delta: 23.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:01,484 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62 ms. Allocated memory is still 151.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 443.88 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 111.4 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 121.94 ms. Allocated memory is still 151.0 MB. Free memory was 111.4 MB in the beginning and 109.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 735.26 ms. Allocated memory is still 151.0 MB. Free memory was 109.0 MB in the beginning and 110.9 MB in the end (delta: -1.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1478.54 ms. Allocated memory is still 151.0 MB. Free memory was 110.4 MB in the beginning and 87.2 MB in the end (delta: 23.2 MB). Peak memory consumption was 22.7 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 15, overapproximation of someUnaryDOUBLEoperation at line 104, overapproximation of bitwiseAnd at line 118, overapproximation of someUnaryFLOAToperation at line 102, overapproximation of someBinaryArithmeticFLOAToperation at line 121. Possible FailurePath: [L17] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L100-L108] static const float one_asin = 1.0000000000e+00, huge_asin = 1.000e+30, pio2_hi_asin = 1.57079637050628662109375f, pio2_lo_asin = -4.37113900018624283e-8f, pio4_hi_asin = 0.785398185253143310546875f, pS0_asin = 1.6666667163e-01, pS1_asin = -3.2556581497e-01, pS2_asin = 2.0121252537e-01, pS3_asin = -4.0055535734e-02, pS4_asin = 7.9153501429e-04, pS5_asin = 3.4793309169e-05, qS1_asin = -2.4033949375e+00, qS2_asin = 2.0209457874e+00, qS3_asin = -6.8828397989e-01, qS4_asin = 7.7038154006e-02; [L186] float x = __VERIFIER_nondet_float(); [L188] COND TRUE x < -1.0f || x > 1.0f [L190] CALL, EXPR __ieee754_asinf(x) [L111] float t, w, p, q, c, r, s; [L112] __int32_t hx, ix; [L114] ieee_float_shape_type gf_u; [L115] gf_u.value = (x) [L116] EXPR gf_u.word [L116] (hx) = gf_u.word [L118] ix = hx & 0x7fffffff [L119] COND TRUE ix == 0x3f800000 [L121] return x * pio2_hi_asin + x * pio2_lo_asin; [L190] RET, EXPR __ieee754_asinf(x) [L190] float res = __ieee754_asinf(x); [L193] CALL, EXPR isnan_float(res) [L15] return x != x; [L193] RET, EXPR isnan_float(res) [L193] COND TRUE !isnan_float(res) [L194] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0281.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 82 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 93 SDtfs, 22 SDslu, 74 SDs, 0 SdLazy, 92 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred 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, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 2530 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...