/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_0960b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:20:03,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:20:03,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:20:03,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:20:03,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:20:03,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:20:03,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:20:03,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:20:03,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:20:03,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:20:03,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:20:03,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:20:03,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:20:03,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:20:03,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:20:03,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:20:03,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:20:03,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:20:03,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:20:03,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:20:03,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:20:03,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:20:03,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:20:03,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:20:03,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:20:03,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:20:03,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:20:03,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:20:03,884 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:20:03,889 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:20:03,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:20:03,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:20:03,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:20:03,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:20:03,894 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:20:03,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:20:03,895 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:20:03,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:20:03,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:20:03,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:20:03,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:20:03,900 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 10:20:03,941 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:20:03,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:20:03,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:20:03,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:20:03,943 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:20:03,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:20:03,944 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:20:03,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:20:03,944 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:20:03,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:20:03,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:20:03,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:20:03,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:20:03,946 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:20:03,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:20:03,947 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:20:03,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:20:03,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:20:03,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:20:03,947 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:20:03,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:20:03,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:20:03,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:20:03,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:20:03,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:20:03,949 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:20:03,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:20:03,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:20:03,949 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:20:03,950 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 10:20:04,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:20:04,307 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:20:04,310 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:20:04,313 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:20:04,313 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:20:04,314 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0960b.c [2020-10-13 10:20:04,394 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1236ecedd/2576248807e64fd8a074fe8a113f399b/FLAG439f6c8e6 [2020-10-13 10:20:04,871 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:20:04,872 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0960b.c [2020-10-13 10:20:04,879 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1236ecedd/2576248807e64fd8a074fe8a113f399b/FLAG439f6c8e6 [2020-10-13 10:20:05,214 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1236ecedd/2576248807e64fd8a074fe8a113f399b [2020-10-13 10:20:05,222 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:20:05,224 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:20:05,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:20:05,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:20:05,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:20:05,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:20:05" (1/1) ... [2020-10-13 10:20:05,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@448d4077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:05, skipping insertion in model container [2020-10-13 10:20:05,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:20:05" (1/1) ... [2020-10-13 10:20:05,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:20:05,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:20:05,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:20:05,490 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:20:05,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:20:05,649 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:20:05,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:05 WrapperNode [2020-10-13 10:20:05,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:20:05,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:20:05,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:20:05,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:20:05,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:05" (1/1) ... [2020-10-13 10:20:05,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:05" (1/1) ... [2020-10-13 10:20:05,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:05" (1/1) ... [2020-10-13 10:20:05,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:05" (1/1) ... [2020-10-13 10:20:05,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:05" (1/1) ... [2020-10-13 10:20:05,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:05" (1/1) ... [2020-10-13 10:20:05,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:05" (1/1) ... [2020-10-13 10:20:05,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:20:05,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:20:05,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:20:05,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:20:05,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:20:05,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:20:05,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:20:05,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_logf [2020-10-13 10:20:05,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_log10f [2020-10-13 10:20:05,778 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-10-13 10:20:05,778 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:20:05,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:20:05,778 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_logf [2020-10-13 10:20:05,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:20:05,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 10:20:05,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:20:05,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:20:05,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:20:05,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 10:20:05,779 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_log10f [2020-10-13 10:20:05,780 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-10-13 10:20:05,780 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:20:05,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:20:05,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:20:06,297 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:20:06,297 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-13 10:20:06,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:20:06 BoogieIcfgContainer [2020-10-13 10:20:06,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:20:06,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:20:06,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:20:06,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:20:06,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:20:05" (1/3) ... [2020-10-13 10:20:06,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479f157c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:20:06, skipping insertion in model container [2020-10-13 10:20:06,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:05" (2/3) ... [2020-10-13 10:20:06,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479f157c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:20:06, skipping insertion in model container [2020-10-13 10:20:06,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:20:06" (3/3) ... [2020-10-13 10:20:06,310 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0960b.c [2020-10-13 10:20:06,321 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:20:06,329 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:20:06,342 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:20:06,365 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:20:06,365 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:20:06,365 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:20:06,365 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:20:06,365 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:20:06,366 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:20:06,366 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:20:06,366 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:20:06,383 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-10-13 10:20:06,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-13 10:20:06,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:20:06,391 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] [2020-10-13 10:20:06,391 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:20:06,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:20:06,397 INFO L82 PathProgramCache]: Analyzing trace with hash 715082574, now seen corresponding path program 1 times [2020-10-13 10:20:06,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:20:06,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829822622] [2020-10-13 10:20:06,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:20:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:06,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:06,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:06,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:06,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 10:20:06,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:20:06,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-13 10:20:06,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:06,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:06,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 10:20:06,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:06,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:20:06,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:20:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:06,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:06,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:06,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:06,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:06,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 10:20:06,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:06,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:06,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:06,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:06,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:06,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:20:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:06,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:06,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:06,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:06,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:20:06,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:20:06,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:20:06,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:06,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:06,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:06,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:06,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:06,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 10:20:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:06,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:06,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:06,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:20:06,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:06,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:20:06,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:06,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:06,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:20:06,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:06,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:07,006 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 10:20:07,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829822622] [2020-10-13 10:20:07,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:20:07,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:20:07,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240476203] [2020-10-13 10:20:07,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:20:07,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:20:07,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:20:07,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:20:07,034 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 4 states. [2020-10-13 10:20:07,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:20:07,432 INFO L93 Difference]: Finished difference Result 118 states and 178 transitions. [2020-10-13 10:20:07,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:20:07,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-13 10:20:07,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:20:07,445 INFO L225 Difference]: With dead ends: 118 [2020-10-13 10:20:07,445 INFO L226 Difference]: Without dead ends: 59 [2020-10-13 10:20:07,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 10:20:07,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-13 10:20:07,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-13 10:20:07,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 10:20:07,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2020-10-13 10:20:07,501 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 23 [2020-10-13 10:20:07,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:20:07,502 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2020-10-13 10:20:07,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:20:07,502 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2020-10-13 10:20:07,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-13 10:20:07,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:20:07,504 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, 1] [2020-10-13 10:20:07,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:20:07,504 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:20:07,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:20:07,505 INFO L82 PathProgramCache]: Analyzing trace with hash -242440710, now seen corresponding path program 1 times [2020-10-13 10:20:07,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:20:07,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274605471] [2020-10-13 10:20:07,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:20:07,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:20:07,561 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:20:07,562 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:20:07,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:20:07,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:20:07 BoogieIcfgContainer [2020-10-13 10:20:07,599 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:20:07,603 INFO L168 Benchmark]: Toolchain (without parser) took 2377.22 ms. Allocated memory was 142.1 MB in the beginning and 233.8 MB in the end (delta: 91.8 MB). Free memory was 103.9 MB in the beginning and 150.6 MB in the end (delta: -46.7 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2020-10-13 10:20:07,605 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 142.1 MB. Free memory was 122.4 MB in the beginning and 121.9 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-13 10:20:07,607 INFO L168 Benchmark]: CACSL2BoogieTranslator took 425.77 ms. Allocated memory was 142.1 MB in the beginning and 205.5 MB in the end (delta: 63.4 MB). Free memory was 103.5 MB in the beginning and 182.0 MB in the end (delta: -78.5 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-10-13 10:20:07,608 INFO L168 Benchmark]: Boogie Preprocessor took 58.66 ms. Allocated memory is still 205.5 MB. Free memory was 182.0 MB in the beginning and 179.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-13 10:20:07,609 INFO L168 Benchmark]: RCFGBuilder took 591.91 ms. Allocated memory is still 205.5 MB. Free memory was 179.2 MB in the beginning and 149.8 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. [2020-10-13 10:20:07,611 INFO L168 Benchmark]: TraceAbstraction took 1296.19 ms. Allocated memory was 205.5 MB in the beginning and 233.8 MB in the end (delta: 28.3 MB). Free memory was 148.9 MB in the beginning and 150.6 MB in the end (delta: -1.8 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:20:07,625 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 142.1 MB. Free memory was 122.4 MB in the beginning and 121.9 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 425.77 ms. Allocated memory was 142.1 MB in the beginning and 205.5 MB in the end (delta: 63.4 MB). Free memory was 103.5 MB in the beginning and 182.0 MB in the end (delta: -78.5 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.66 ms. Allocated memory is still 205.5 MB. Free memory was 182.0 MB in the beginning and 179.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 591.91 ms. Allocated memory is still 205.5 MB. Free memory was 179.2 MB in the beginning and 149.8 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1296.19 ms. Allocated memory was 205.5 MB in the beginning and 233.8 MB in the end (delta: 28.3 MB). Free memory was 148.9 MB in the beginning and 150.6 MB in the end (delta: -1.8 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 166]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryFLOAToperation at line 161, overapproximation of someBinaryArithmeticFLOAToperation at line 116, overapproximation of bitwiseAnd at line 151. Possible FailurePath: [L11-L15] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L17] static const float zero_log = 0.0; [L97-L100] static const float two25_log10 = 3.3554432000e+07, ivln10_log10 = 4.3429449201e-01, log10_2hi_log10 = 3.0102920532e-01, log10_2lo_log10 = 7.9034151668e-07; [L102] static const float zero = 0.0; [L161] float x = -0.0f; [L162] CALL, EXPR __ieee754_log10f(x) [L105] float y, z; [L106] __int32_t i, k, hx; [L109] ieee_float_shape_type gf_u; [L110] gf_u.value = (x) [L111] EXPR gf_u.word [L111] (hx) = gf_u.word [L114] k = 0 [L115] COND TRUE ((hx & 0x7fffffff) == 0) [L116] return -two25_log10 / zero; [L162] RET, EXPR __ieee754_log10f(x) [L162] float res = __ieee754_log10f(x); [L165] CALL, EXPR isinf_float(res) [L145] __int32_t ix; [L147] ieee_float_shape_type gf_u; [L148] gf_u.value = (x) [L149] EXPR gf_u.word [L149] (ix) = gf_u.word [L151] ix &= 0x7fffffff [L152] return ((ix) == 0x7f800000L); [L165] RET, EXPR isinf_float(res) [L165] COND TRUE !isinf_float(res) [L166] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 63 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: 65 SDtfs, 61 SDslu, 5 SDs, 0 SdLazy, 80 SolverSat, 17 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 2266 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...