/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=NARROWEST --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_0620b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:19:31,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:19:31,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:19:31,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:19:31,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:19:31,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:19:31,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:19:31,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:19:31,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:19:31,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:19:31,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:19:31,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:19:31,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:19:31,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:19:31,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:19:31,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:19:31,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:19:31,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:19:31,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:19:31,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:19:31,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:19:31,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:19:31,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:19:31,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:19:31,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:19:31,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:19:31,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:19:31,100 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:19:31,101 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:19:31,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:19:31,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:19:31,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:19:31,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:19:31,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:19:31,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:19:31,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:19:31,112 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:19:31,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:19:31,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:19:31,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:19:31,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:19:31,116 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 [2020-10-13 10:19:31,165 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:19:31,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:19:31,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:19:31,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:19:31,167 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:19:31,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:19:31,168 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:19:31,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:19:31,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:19:31,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:19:31,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:19:31,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:19:31,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:19:31,169 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:19:31,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:19:31,170 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:19:31,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:19:31,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:19:31,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:19:31,170 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:19:31,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:19:31,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:19:31,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:19:31,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:19:31,171 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:19:31,172 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:19:31,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:19:31,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:19:31,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:19:31,172 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:19:31,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:19:31,514 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:19:31,518 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:19:31,519 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:19:31,520 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:19:31,521 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0620b.c [2020-10-13 10:19:31,586 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c0b44feb/b0989d5d93324dbbb91a63ba9cd810d0/FLAG7a1e40217 [2020-10-13 10:19:32,056 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:19:32,056 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0620b.c [2020-10-13 10:19:32,064 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c0b44feb/b0989d5d93324dbbb91a63ba9cd810d0/FLAG7a1e40217 [2020-10-13 10:19:32,472 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c0b44feb/b0989d5d93324dbbb91a63ba9cd810d0 [2020-10-13 10:19:32,482 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:19:32,484 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:19:32,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:19:32,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:19:32,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:19:32,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:19:32" (1/1) ... [2020-10-13 10:19:32,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a56ccca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:32, skipping insertion in model container [2020-10-13 10:19:32,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:19:32" (1/1) ... [2020-10-13 10:19:32,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:19:32,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:19:32,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:19:32,803 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:19:32,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:19:32,959 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:19:32,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:32 WrapperNode [2020-10-13 10:19:32,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:19:32,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:19:32,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:19:32,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:19:32,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:32" (1/1) ... [2020-10-13 10:19:32,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:32" (1/1) ... [2020-10-13 10:19:32,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:32" (1/1) ... [2020-10-13 10:19:32,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:32" (1/1) ... [2020-10-13 10:19:33,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:32" (1/1) ... [2020-10-13 10:19:33,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:32" (1/1) ... [2020-10-13 10:19:33,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:32" (1/1) ... [2020-10-13 10:19:33,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:19:33,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:19:33,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:19:33,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:19:33,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:32" (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 [2020-10-13 10:19:33,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:19:33,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:19:33,088 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-13 10:19:33,088 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-13 10:19:33,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-13 10:19:33,088 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:19:33,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:19:33,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-13 10:19:33,090 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-13 10:19:33,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:19:33,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 10:19:33,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:19:33,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:19:33,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:19:33,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 10:19:33,092 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-13 10:19:33,092 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-13 10:19:33,092 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:19:33,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:19:33,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-13 10:19:33,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:19:33,596 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:19:33,596 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-13 10:19:33,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:19:33 BoogieIcfgContainer [2020-10-13 10:19:33,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:19:33,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:19:33,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:19:33,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:19:33,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:19:32" (1/3) ... [2020-10-13 10:19:33,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13955e3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:19:33, skipping insertion in model container [2020-10-13 10:19:33,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:32" (2/3) ... [2020-10-13 10:19:33,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13955e3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:19:33, skipping insertion in model container [2020-10-13 10:19:33,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:19:33" (3/3) ... [2020-10-13 10:19:33,610 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620b.c [2020-10-13 10:19:33,621 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:19:33,630 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:19:33,643 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:19:33,667 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:19:33,667 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:19:33,667 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:19:33,667 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:19:33,668 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:19:33,668 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:19:33,668 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:19:33,668 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:19:33,690 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-13 10:19:33,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-13 10:19:33,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:19:33,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:19:33,700 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:19:33,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:19:33,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1825925930, now seen corresponding path program 1 times [2020-10-13 10:19:33,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:19:33,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366085055] [2020-10-13 10:19:33,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:19:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:33,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:34,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:34,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 10:19:34,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:34,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-13 10:19:34,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:34,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:34,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 10:19:34,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:34,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 10:19:34,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:19:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:34,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:34,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:34,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:19:34,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:34,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 10:19:34,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:34,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:34,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:19:34,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:34,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:19:34,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:19:34,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:34,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:34,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:34,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:19:34,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:34,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 10:19:34,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:34,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:34,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:19:34,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:34,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:19:34,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:19:34,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366085055] [2020-10-13 10:19:34,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:19:34,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:19:34,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290648083] [2020-10-13 10:19:34,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:19:34,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:19:34,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:19:34,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:19:34,359 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2020-10-13 10:19:34,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:19:34,673 INFO L93 Difference]: Finished difference Result 100 states and 142 transitions. [2020-10-13 10:19:34,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:19:34,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-13 10:19:34,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:19:34,688 INFO L225 Difference]: With dead ends: 100 [2020-10-13 10:19:34,688 INFO L226 Difference]: Without dead ends: 50 [2020-10-13 10:19:34,693 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 [2020-10-13 10:19:34,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-13 10:19:34,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-13 10:19:34,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-13 10:19:34,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2020-10-13 10:19:34,764 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 18 [2020-10-13 10:19:34,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:19:34,765 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2020-10-13 10:19:34,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:19:34,765 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2020-10-13 10:19:34,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-13 10:19:34,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:19:34,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:19:34,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:19:34,771 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:19:34,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:19:34,772 INFO L82 PathProgramCache]: Analyzing trace with hash -939815554, now seen corresponding path program 1 times [2020-10-13 10:19:34,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:19:34,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391393267] [2020-10-13 10:19:34,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:19:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:19:34,857 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:19:34,858 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:19:34,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:19:34,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:19:34 BoogieIcfgContainer [2020-10-13 10:19:34,881 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:19:34,884 INFO L168 Benchmark]: Toolchain (without parser) took 2399.99 ms. Allocated memory was 142.6 MB in the beginning and 232.3 MB in the end (delta: 89.7 MB). Free memory was 105.4 MB in the beginning and 174.9 MB in the end (delta: -69.6 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:34,885 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 142.6 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 10:19:34,886 INFO L168 Benchmark]: CACSL2BoogieTranslator took 475.59 ms. Allocated memory was 142.6 MB in the beginning and 203.4 MB in the end (delta: 60.8 MB). Free memory was 105.1 MB in the beginning and 179.2 MB in the end (delta: -74.0 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:34,887 INFO L168 Benchmark]: Boogie Preprocessor took 58.31 ms. Allocated memory is still 203.4 MB. Free memory was 179.2 MB in the beginning and 176.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:34,888 INFO L168 Benchmark]: RCFGBuilder took 581.97 ms. Allocated memory is still 203.4 MB. Free memory was 176.7 MB in the beginning and 150.9 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:34,889 INFO L168 Benchmark]: TraceAbstraction took 1278.73 ms. Allocated memory was 203.4 MB in the beginning and 232.3 MB in the end (delta: 28.8 MB). Free memory was 150.3 MB in the beginning and 174.9 MB in the end (delta: -24.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:34,893 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 142.6 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 475.59 ms. Allocated memory was 142.6 MB in the beginning and 203.4 MB in the end (delta: 60.8 MB). Free memory was 105.1 MB in the beginning and 179.2 MB in the end (delta: -74.0 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.31 ms. Allocated memory is still 203.4 MB. Free memory was 179.2 MB in the beginning and 176.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 581.97 ms. Allocated memory is still 203.4 MB. Free memory was 176.7 MB in the beginning and 150.9 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1278.73 ms. Allocated memory was 203.4 MB in the beginning and 232.3 MB in the end (delta: 28.8 MB). Free memory was 150.3 MB in the beginning and 174.9 MB in the end (delta: -24.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 142]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 141, overapproximation of someUnaryDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 62, overapproximation of someUnaryFLOAToperation at line 137, overapproximation of someBinaryArithmeticFLOAToperation at line 65. Possible FailurePath: [L12] static const float huge_floor = 1.0e30; [L29-L34] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L36-L41] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L43-L47] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L49-L51] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L137] float x = -0.0f; [L138] CALL, EXPR atan_float(x) [L54] float w, s1, s2, z; [L55] __int32_t ix, hx, id; [L58] ieee_float_shape_type gf_u; [L59] gf_u.value = (x) [L60] EXPR gf_u.word [L60] (hx) = gf_u.word [L62] ix = hx & 0x7fffffff [L63] COND TRUE ix >= 0x50800000 [L64] COND TRUE ((ix) > 0x7f800000L) [L65] return x + x; [L138] RET, EXPR atan_float(x) [L138] float res = atan_float(x); [L141] EXPR res == -0.0f && __signbit_float(res) == 1 [L141] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L142] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 8 SDslu, 55 SDs, 0 SdLazy, 61 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 1309 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...