/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0661a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:32:25,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:32:25,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:32:25,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:32:25,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:32:25,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:32:25,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:32:25,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:32:25,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:32:25,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:32:25,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:32:25,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:32:25,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:32:25,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:32:25,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:32:25,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:32:25,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:32:25,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:32:25,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:32:25,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:32:25,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:32:25,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:32:25,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:32:25,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:32:25,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:32:25,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:32:25,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:32:25,256 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:32:25,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:32:25,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:32:25,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:32:25,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:32:25,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:32:25,262 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:32:25,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:32:25,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:32:25,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:32:25,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:32:25,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:32:25,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:32:25,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:32:25,268 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 15:32:25,313 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:32:25,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:32:25,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:32:25,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:32:25,316 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:32:25,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:32:25,317 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:32:25,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:32:25,317 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:32:25,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:32:25,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:32:25,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:32:25,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:32:25,319 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:32:25,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:32:25,319 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:32:25,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:32:25,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:32:25,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:32:25,320 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:32:25,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:32:25,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:32:25,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:32:25,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:32:25,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:32:25,321 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:32:25,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:32:25,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:32:25,322 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:32:25,322 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:32:25,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:32:25,634 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:32:25,637 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:32:25,639 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:32:25,640 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:32:25,641 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0661a.c [2020-10-12 15:32:25,707 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9db0ad690/0f672aa857b443c6835fdbbdc0840691/FLAGf864a73f9 [2020-10-12 15:32:26,145 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:32:26,146 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0661a.c [2020-10-12 15:32:26,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9db0ad690/0f672aa857b443c6835fdbbdc0840691/FLAGf864a73f9 [2020-10-12 15:32:26,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9db0ad690/0f672aa857b443c6835fdbbdc0840691 [2020-10-12 15:32:26,558 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:32:26,559 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:32:26,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:32:26,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:32:26,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:32:26,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:32:26" (1/1) ... [2020-10-12 15:32:26,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b40a169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:26, skipping insertion in model container [2020-10-12 15:32:26,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:32:26" (1/1) ... [2020-10-12 15:32:26,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:32:26,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:32:26,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:32:26,845 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:32:26,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:32:27,023 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:32:27,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:27 WrapperNode [2020-10-12 15:32:27,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:32:27,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:32:27,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:32:27,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:32:27,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:27" (1/1) ... [2020-10-12 15:32:27,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:27" (1/1) ... [2020-10-12 15:32:27,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:27" (1/1) ... [2020-10-12 15:32:27,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:27" (1/1) ... [2020-10-12 15:32:27,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:27" (1/1) ... [2020-10-12 15:32:27,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:27" (1/1) ... [2020-10-12 15:32:27,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:27" (1/1) ... [2020-10-12 15:32:27,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:32:27,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:32:27,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:32:27,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:32:27,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:32:27,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:32:27,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:32:27,164 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-12 15:32:27,164 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-12 15:32:27,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2f [2020-10-12 15:32:27,165 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:32:27,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:32:27,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-12 15:32:27,165 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-12 15:32:27,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 15:32:27,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-12 15:32:27,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:32:27,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:32:27,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:32:27,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-12 15:32:27,167 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-12 15:32:27,167 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2f [2020-10-12 15:32:27,167 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:32:27,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:32:27,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-12 15:32:27,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:32:27,761 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:32:27,762 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-12 15:32:27,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:32:27 BoogieIcfgContainer [2020-10-12 15:32:27,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:32:27,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:32:27,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:32:27,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:32:27,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:32:26" (1/3) ... [2020-10-12 15:32:27,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422e5c6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:32:27, skipping insertion in model container [2020-10-12 15:32:27,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:27" (2/3) ... [2020-10-12 15:32:27,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422e5c6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:32:27, skipping insertion in model container [2020-10-12 15:32:27,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:32:27" (3/3) ... [2020-10-12 15:32:27,777 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0661a.c [2020-10-12 15:32:27,788 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:32:27,797 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:32:27,812 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:32:27,838 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:32:27,838 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:32:27,839 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:32:27,839 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:32:27,839 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:32:27,839 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:32:27,840 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:32:27,840 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:32:27,862 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-10-12 15:32:27,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-12 15:32:27,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:32:27,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:32:27,871 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:32:27,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:32:27,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1526168591, now seen corresponding path program 1 times [2020-10-12 15:32:27,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:32:27,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990173165] [2020-10-12 15:32:27,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:32:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:32:28,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:32:28,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:32:28,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:32:28,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 15:32:28,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:32:28,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-12 15:32:28,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:32:28,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:32:28,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 15:32:28,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:32:28,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:32:28,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:32:28,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:32:28,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:32:28,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:32:28,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:32:28,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:32:28,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 15:32:28,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:32:28,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:32:28,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:32:28,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:32:28,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:32:28,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 15:32:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:32:28,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:32:28,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:32:28,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:32:28,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 15:32:28,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:32:28,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 15:32:28,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:32:28,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:32:28,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 15:32:28,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:32:28,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:32:28,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:32:28,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990173165] [2020-10-12 15:32:28,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:32:28,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:32:28,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238350417] [2020-10-12 15:32:28,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:32:28,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:32:28,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:32:28,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:32:28,510 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 4 states. [2020-10-12 15:32:28,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:32:28,899 INFO L93 Difference]: Finished difference Result 196 states and 309 transitions. [2020-10-12 15:32:28,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:32:28,901 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-12 15:32:28,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:32:28,913 INFO L225 Difference]: With dead ends: 196 [2020-10-12 15:32:28,913 INFO L226 Difference]: Without dead ends: 96 [2020-10-12 15:32:28,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:32:28,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-12 15:32:28,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-12 15:32:28,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-12 15:32:28,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 135 transitions. [2020-10-12 15:32:28,974 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 135 transitions. Word has length 19 [2020-10-12 15:32:28,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:32:28,974 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 135 transitions. [2020-10-12 15:32:28,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:32:28,975 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 135 transitions. [2020-10-12 15:32:28,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 15:32:28,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:32:28,976 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] [2020-10-12 15:32:28,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:32:28,977 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:32:28,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:32:28,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1732400538, now seen corresponding path program 1 times [2020-10-12 15:32:28,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:32:28,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873436634] [2020-10-12 15:32:28,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:32:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 15:32:29,048 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 15:32:29,049 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 15:32:29,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:32:29,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:32:29 BoogieIcfgContainer [2020-10-12 15:32:29,080 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:32:29,084 INFO L168 Benchmark]: Toolchain (without parser) took 2523.35 ms. Allocated memory was 141.0 MB in the beginning and 233.8 MB in the end (delta: 92.8 MB). Free memory was 102.1 MB in the beginning and 131.5 MB in the end (delta: -29.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2020-10-12 15:32:29,086 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 15:32:29,088 INFO L168 Benchmark]: CACSL2BoogieTranslator took 463.32 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 101.9 MB in the beginning and 178.6 MB in the end (delta: -76.6 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-10-12 15:32:29,089 INFO L168 Benchmark]: Boogie Preprocessor took 67.98 ms. Allocated memory is still 203.9 MB. Free memory was 178.6 MB in the beginning and 175.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-10-12 15:32:29,090 INFO L168 Benchmark]: RCFGBuilder took 675.96 ms. Allocated memory is still 203.9 MB. Free memory was 175.4 MB in the beginning and 135.8 MB in the end (delta: 39.6 MB). Peak memory consumption was 39.6 MB. Max. memory is 7.1 GB. [2020-10-12 15:32:29,092 INFO L168 Benchmark]: TraceAbstraction took 1310.71 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 135.2 MB in the beginning and 131.5 MB in the end (delta: 3.7 MB). Peak memory consumption was 33.5 MB. Max. memory is 7.1 GB. [2020-10-12 15:32:29,101 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 463.32 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 101.9 MB in the beginning and 178.6 MB in the end (delta: -76.6 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.98 ms. Allocated memory is still 203.9 MB. Free memory was 178.6 MB in the beginning and 175.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 675.96 ms. Allocated memory is still 203.9 MB. Free memory was 175.4 MB in the beginning and 135.8 MB in the end (delta: 39.6 MB). Peak memory consumption was 39.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1310.71 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 135.2 MB in the beginning and 131.5 MB in the end (delta: 3.7 MB). Peak memory consumption was 33.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 228]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 227, overapproximation of someUnaryDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 133, overapproximation of someUnaryFLOAToperation at line 217, overapproximation of someBinaryArithmeticFLOAToperation at line 135. Possible FailurePath: [L27-L32] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L34-L39] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L41-L45] 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, }; [L47-L49] 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; [L115-L116] static const float tiny_atan2 = 1.0e-30, zero_atan2 = 0.0, pi_lo_atan2 = -8.7422776573e-08; [L216] float x = __VERIFIER_nondet_float(); [L217] float y = -0.0f; [L224] COND TRUE x > 0.0f [L225] CALL, EXPR __ieee754_atan2f(y, x) [L119] float z; [L120] __int32_t k, m, hx, hy, ix, iy; [L123] ieee_float_shape_type gf_u; [L124] gf_u.value = (x) [L125] EXPR gf_u.word [L125] (hx) = gf_u.word [L127] ix = hx & 0x7fffffff [L129] ieee_float_shape_type gf_u; [L130] gf_u.value = (y) [L131] EXPR gf_u.word [L131] (hy) = gf_u.word [L133] iy = hy & 0x7fffffff [L134] COND TRUE ((ix) > 0x7f800000L) || ((iy) > 0x7f800000L) [L135] return x + y; [L225] RET, EXPR __ieee754_atan2f(y, x) [L225] float res = __ieee754_atan2f(y, x); [L227] COND TRUE res != -0.0f [L228] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 101 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 137 SDtfs, 16 SDslu, 124 SDs, 0 SdLazy, 136 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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=101occurred 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, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 1512 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...