/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 SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0740.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:20:45,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:20:45,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:20:45,652 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:20:45,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:20:45,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:20:45,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:20:45,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:20:45,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:20:45,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:20:45,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:20:45,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:20:45,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:20:45,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:20:45,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:20:45,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:20:45,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:20:45,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:20:45,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:20:45,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:20:45,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:20:45,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:20:45,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:20:45,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:20:45,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:20:45,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:20:45,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:20:45,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:20:45,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:20:45,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:20:45,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:20:45,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:20:45,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:20:45,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:20:45,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:20:45,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:20:45,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:20:45,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:20:45,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:20:45,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:20:45,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:20:45,726 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 [2020-09-25 13:20:45,766 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:20:45,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:20:45,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:20:45,769 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:20:45,769 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:20:45,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:20:45,770 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:20:45,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:20:45,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:20:45,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:20:45,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:20:45,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:20:45,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:20:45,772 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:20:45,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:20:45,773 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:20:45,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:20:45,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:20:45,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:20:45,773 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:20:45,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:20:45,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:20:45,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:20:45,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:20:45,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:20:45,775 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:20:45,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:20:45,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:20:45,775 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:20:45,775 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 -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:20:46,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:20:46,259 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:20:46,264 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:20:46,266 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:20:46,267 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:20:46,268 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0740.c [2020-09-25 13:20:46,361 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72ef6df0b/061f153c92e44498a0c51244e5af056c/FLAGfc9bcdcda [2020-09-25 13:20:46,921 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:20:46,922 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0740.c [2020-09-25 13:20:46,935 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72ef6df0b/061f153c92e44498a0c51244e5af056c/FLAGfc9bcdcda [2020-09-25 13:20:47,249 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72ef6df0b/061f153c92e44498a0c51244e5af056c [2020-09-25 13:20:47,262 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:20:47,268 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:20:47,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:20:47,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:20:47,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:20:47,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:20:47" (1/1) ... [2020-09-25 13:20:47,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6017e0f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:47, skipping insertion in model container [2020-09-25 13:20:47,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:20:47" (1/1) ... [2020-09-25 13:20:47,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:20:47,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:20:47,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:20:47,579 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:20:47,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:20:47,728 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:20:47,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:47 WrapperNode [2020-09-25 13:20:47,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:20:47,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:20:47,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:20:47,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:20:47,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:47" (1/1) ... [2020-09-25 13:20:47,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:47" (1/1) ... [2020-09-25 13:20:47,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:47" (1/1) ... [2020-09-25 13:20:47,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:47" (1/1) ... [2020-09-25 13:20:47,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:47" (1/1) ... [2020-09-25 13:20:47,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:47" (1/1) ... [2020-09-25 13:20:47,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:47" (1/1) ... [2020-09-25 13:20:47,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:20:47,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:20:47,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:20:47,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:20:47,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:47" (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 [2020-09-25 13:20:47,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:20:47,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:20:47,868 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-09-25 13:20:47,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-09-25 13:20:47,869 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:20:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:20:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-25 13:20:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-09-25 13:20:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-09-25 13:20:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 13:20:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 13:20:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 13:20:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 13:20:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 13:20:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 13:20:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:20:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:20:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:20:48,348 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:20:48,349 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-25 13:20:48,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:20:48 BoogieIcfgContainer [2020-09-25 13:20:48,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:20:48,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:20:48,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:20:48,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:20:48,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:20:47" (1/3) ... [2020-09-25 13:20:48,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d4925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:20:48, skipping insertion in model container [2020-09-25 13:20:48,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:47" (2/3) ... [2020-09-25 13:20:48,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d4925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:20:48, skipping insertion in model container [2020-09-25 13:20:48,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:20:48" (3/3) ... [2020-09-25 13:20:48,364 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0740.c [2020-09-25 13:20:48,373 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:20:48,383 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:20:48,401 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:20:48,429 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:20:48,429 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:20:48,429 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:20:48,429 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:20:48,429 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:20:48,430 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:20:48,430 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:20:48,430 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:20:48,452 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2020-09-25 13:20:48,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 13:20:48,461 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:20:48,462 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:20:48,462 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:20:48,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:20:48,470 INFO L82 PathProgramCache]: Analyzing trace with hash -2082497467, now seen corresponding path program 1 times [2020-09-25 13:20:48,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:20:48,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701118160] [2020-09-25 13:20:48,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:20:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:20:48,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:48,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:20:48,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 13:20:48,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:20:48,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 13:20:48,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:20:48,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:20:48,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:20:48,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 13:20:48,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:20:48,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:20:48,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:20:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:20:48,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:48,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:20:48,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:20:48,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:20:48,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:20:48,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:20:48,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:20:48,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:20:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:20:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:20:48,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:20:48,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:20:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:20:48,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:48,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:20:48,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 13:20:48,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:20:48,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 13:20:48,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:20:48,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:20:48,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:20:48,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:20:48,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:20:48,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:20:48,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 13:20:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:20:48,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:48,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:20:48,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:20:48,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:20:48,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:20:48,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:20:48,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:20:48,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:20:48,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:20:48,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:20:48,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:20:48,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:20:48,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701118160] [2020-09-25 13:20:48,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:20:48,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:20:48,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835840438] [2020-09-25 13:20:48,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:20:48,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:20:48,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:20:48,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:20:48,991 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 4 states. [2020-09-25 13:20:49,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:20:49,298 INFO L93 Difference]: Finished difference Result 188 states and 222 transitions. [2020-09-25 13:20:49,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 13:20:49,301 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-09-25 13:20:49,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:20:49,316 INFO L225 Difference]: With dead ends: 188 [2020-09-25 13:20:49,316 INFO L226 Difference]: Without dead ends: 98 [2020-09-25 13:20:49,321 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 [2020-09-25 13:20:49,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-25 13:20:49,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-09-25 13:20:49,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-25 13:20:49,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2020-09-25 13:20:49,379 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 38 [2020-09-25 13:20:49,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:20:49,380 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2020-09-25 13:20:49,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:20:49,380 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2020-09-25 13:20:49,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 13:20:49,382 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:20:49,383 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:20:49,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:20:49,383 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:20:49,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:20:49,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1948696332, now seen corresponding path program 1 times [2020-09-25 13:20:49,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:20:49,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866912303] [2020-09-25 13:20:49,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:20:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 13:20:49,434 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 13:20:49,437 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 13:20:49,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:20:49,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:20:49 BoogieIcfgContainer [2020-09-25 13:20:49,487 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 13:20:49,492 INFO L168 Benchmark]: Toolchain (without parser) took 2225.31 ms. Allocated memory was 140.5 MB in the beginning and 235.4 MB in the end (delta: 94.9 MB). Free memory was 104.1 MB in the beginning and 196.6 MB in the end (delta: -92.5 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-09-25 13:20:49,494 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 13:20:49,496 INFO L168 Benchmark]: CACSL2BoogieTranslator took 456.16 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.5 MB in the beginning and 182.3 MB in the end (delta: -78.9 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-09-25 13:20:49,496 INFO L168 Benchmark]: Boogie Preprocessor took 55.96 ms. Allocated memory is still 203.4 MB. Free memory was 182.3 MB in the beginning and 180.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-09-25 13:20:49,498 INFO L168 Benchmark]: RCFGBuilder took 569.65 ms. Allocated memory is still 203.4 MB. Free memory was 180.0 MB in the beginning and 153.8 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-09-25 13:20:49,499 INFO L168 Benchmark]: TraceAbstraction took 1130.42 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 153.1 MB in the beginning and 196.6 MB in the end (delta: -43.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 13:20:49,511 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 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 456.16 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.5 MB in the beginning and 182.3 MB in the end (delta: -78.9 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.96 ms. Allocated memory is still 203.4 MB. Free memory was 182.3 MB in the beginning and 180.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 569.65 ms. Allocated memory is still 203.4 MB. Free memory was 180.0 MB in the beginning and 153.8 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1130.42 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 153.1 MB in the beginning and 196.6 MB in the end (delta: -43.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 97]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 13, overapproximation of someBinaryArithmeticFLOAToperation at line 30, overapproximation of bitwiseAnd at line 27. Possible FailurePath: [L15] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L91] float x = -1.0f / 0.0f; [L93] CALL, EXPR __ieee754_sqrtf(x) [L18] float z; [L19] __uint32_t r, hx; [L20] __int32_t ix, s, q, m, t, i; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (ix) = gf_u.word [L27] hx = ix & 0x7fffffff [L29] COND TRUE !((hx) < 0x7f800000L) [L30] return x * x + x; [L93] RET, EXPR __ieee754_sqrtf(x) [L93] float res = __ieee754_sqrtf(x); [L96] CALL, EXPR isnan_float(res) [L13] return x != x; [L96] RET, EXPR isnan_float(res) [L96] COND TRUE !isnan_float(res) [L97] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 105 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 112 SDtfs, 29 SDslu, 83 SDs, 0 SdLazy, 110 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=105occurred 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, 0.3s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 2368 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...