/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_1010.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:20:46,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:20:46,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:20:46,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:20:46,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:20:46,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:20:46,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:20:46,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:20:46,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:20:46,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:20:46,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:20:46,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:20:46,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:20:46,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:20:46,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:20:46,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:20:46,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:20:46,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:20:46,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:20:46,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:20:46,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:20:46,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:20:46,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:20:46,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:20:46,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:20:46,744 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:20:46,744 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:20:46,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:20:46,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:20:46,747 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:20:46,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:20:46,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:20:46,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:20:46,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:20:46,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:20:46,752 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:20:46,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:20:46,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:20:46,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:20:46,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:20:46,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:20:46,757 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 13:20:46,784 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:20:46,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:20:46,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:20:46,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:20:46,786 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:20:46,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:20:46,786 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:20:46,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:20:46,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:20:46,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:20:46,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:20:46,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:20:46,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:20:46,788 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:20:46,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:20:46,788 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:20:46,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:20:46,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:20:46,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:20:46,789 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:20:46,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:20:46,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:20:46,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:20:46,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:20:46,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:20:46,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:20:46,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:20:46,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:20:46,791 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:20:46,791 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 13:20:47,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:20:47,315 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:20:47,322 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:20:47,325 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:20:47,326 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:20:47,327 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1010.c [2020-09-25 13:20:47,428 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9514507d6/1682e21991c44bf0a08f586f7b61c42b/FLAGfe71450aa [2020-09-25 13:20:47,971 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:20:47,972 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1010.c [2020-09-25 13:20:47,981 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9514507d6/1682e21991c44bf0a08f586f7b61c42b/FLAGfe71450aa [2020-09-25 13:20:48,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9514507d6/1682e21991c44bf0a08f586f7b61c42b [2020-09-25 13:20:48,318 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:20:48,325 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:20:48,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:20:48,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:20:48,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:20:48,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:20:48" (1/1) ... [2020-09-25 13:20:48,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2016f310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:48, skipping insertion in model container [2020-09-25 13:20:48,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:20:48" (1/1) ... [2020-09-25 13:20:48,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:20:48,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:20:48,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:20:48,606 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:20:48,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:20:48,670 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:20:48,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:48 WrapperNode [2020-09-25 13:20:48,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:20:48,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:20:48,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:20:48,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:20:48,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:48" (1/1) ... [2020-09-25 13:20:48,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:48" (1/1) ... [2020-09-25 13:20:48,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:48" (1/1) ... [2020-09-25 13:20:48,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:48" (1/1) ... [2020-09-25 13:20:48,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:48" (1/1) ... [2020-09-25 13:20:48,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:48" (1/1) ... [2020-09-25 13:20:48,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:48" (1/1) ... [2020-09-25 13:20:48,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:20:48,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:20:48,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:20:48,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:20:48,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:48" (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 13:20:48,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:20:48,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:20:48,883 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-09-25 13:20:48,884 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-09-25 13:20:48,884 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:20:48,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:20:48,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-25 13:20:48,885 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-09-25 13:20:48,885 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-09-25 13:20:48,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 13:20:48,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 13:20:48,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 13:20:48,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 13:20:48,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 13:20:48,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 13:20:48,886 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:20:48,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:20:48,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:20:49,218 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:20:49,218 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-25 13:20:49,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:20:49 BoogieIcfgContainer [2020-09-25 13:20:49,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:20:49,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:20:49,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:20:49,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:20:49,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:20:48" (1/3) ... [2020-09-25 13:20:49,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df08fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:20:49, skipping insertion in model container [2020-09-25 13:20:49,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:48" (2/3) ... [2020-09-25 13:20:49,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df08fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:20:49, skipping insertion in model container [2020-09-25 13:20:49,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:20:49" (3/3) ... [2020-09-25 13:20:49,233 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1010.c [2020-09-25 13:20:49,247 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:20:49,257 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:20:49,280 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:20:49,307 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:20:49,307 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:20:49,308 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:20:49,308 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:20:49,308 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:20:49,308 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:20:49,308 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:20:49,308 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:20:49,331 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-09-25 13:20:49,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 13:20:49,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:20:49,340 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] [2020-09-25 13:20:49,340 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:20:49,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:20:49,347 INFO L82 PathProgramCache]: Analyzing trace with hash -618451774, now seen corresponding path program 1 times [2020-09-25 13:20:49,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:20:49,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711048470] [2020-09-25 13:20:49,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:20:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:20:49,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:49,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:49,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:20:49,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 13:20:49,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:20:49,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-09-25 13:20:49,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:20:49,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:20:49,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:20:49,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:20:49,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:20:49,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:20:49,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:20:49,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:20:49,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:49,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:20:49,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:20:49,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:20:49,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:20:49,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:20:49,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:20:49,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:20:49,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:20:49,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:20:49,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:20:49,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:20:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:20:49,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:49,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:49,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:20:49,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:20:49,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:20:49,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:20:49,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:20:49,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:20:49,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:20:49,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 13:20:49,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:20:49,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:20:49,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 13:20:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:20:49,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:49,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:20:49,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:20:49,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:20:49,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:20:49,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:20:49,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:20:49,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:20:49,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:20:49,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:20:49,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:20:49,872 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 13:20:49,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711048470] [2020-09-25 13:20:49,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:20:49,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:20:49,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206680656] [2020-09-25 13:20:49,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:20:49,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:20:49,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:20:49,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:20:49,908 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 4 states. [2020-09-25 13:20:50,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:20:50,158 INFO L93 Difference]: Finished difference Result 94 states and 102 transitions. [2020-09-25 13:20:50,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 13:20:50,160 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-09-25 13:20:50,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:20:50,174 INFO L225 Difference]: With dead ends: 94 [2020-09-25 13:20:50,174 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 13:20:50,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:20:50,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 13:20:50,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-25 13:20:50,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-25 13:20:50,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 45 transitions. [2020-09-25 13:20:50,235 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 45 transitions. Word has length 27 [2020-09-25 13:20:50,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:20:50,235 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 45 transitions. [2020-09-25 13:20:50,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:20:50,236 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 45 transitions. [2020-09-25 13:20:50,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 13:20:50,237 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:20:50,238 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] [2020-09-25 13:20:50,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:20:50,238 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:20:50,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:20:50,239 INFO L82 PathProgramCache]: Analyzing trace with hash -2001690657, now seen corresponding path program 1 times [2020-09-25 13:20:50,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:20:50,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275635527] [2020-09-25 13:20:50,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:20:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 13:20:50,281 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 13:20:50,281 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 13:20:50,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:20:50,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:20:50 BoogieIcfgContainer [2020-09-25 13:20:50,310 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 13:20:50,314 INFO L168 Benchmark]: Toolchain (without parser) took 1992.35 ms. Allocated memory was 113.8 MB in the beginning and 186.1 MB in the end (delta: 72.4 MB). Free memory was 71.9 MB in the beginning and 153.7 MB in the end (delta: -81.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 13:20:50,315 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 113.8 MB. Free memory was 89.3 MB in the beginning and 89.2 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. [2020-09-25 13:20:50,316 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.69 ms. Allocated memory was 113.8 MB in the beginning and 130.0 MB in the end (delta: 16.3 MB). Free memory was 71.3 MB in the beginning and 99.0 MB in the end (delta: -27.7 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2020-09-25 13:20:50,317 INFO L168 Benchmark]: Boogie Preprocessor took 130.09 ms. Allocated memory was 130.0 MB in the beginning and 158.9 MB in the end (delta: 28.8 MB). Free memory was 99.0 MB in the beginning and 144.1 MB in the end (delta: -45.1 MB). Peak memory consumption was 719.5 kB. Max. memory is 7.1 GB. [2020-09-25 13:20:50,318 INFO L168 Benchmark]: RCFGBuilder took 421.49 ms. Allocated memory is still 158.9 MB. Free memory was 144.1 MB in the beginning and 126.5 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. [2020-09-25 13:20:50,319 INFO L168 Benchmark]: TraceAbstraction took 1085.60 ms. Allocated memory was 158.9 MB in the beginning and 186.1 MB in the end (delta: 27.3 MB). Free memory was 126.1 MB in the beginning and 153.7 MB in the end (delta: -27.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 13:20:50,323 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 113.8 MB. Free memory was 89.3 MB in the beginning and 89.2 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 342.69 ms. Allocated memory was 113.8 MB in the beginning and 130.0 MB in the end (delta: 16.3 MB). Free memory was 71.3 MB in the beginning and 99.0 MB in the end (delta: -27.7 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.09 ms. Allocated memory was 130.0 MB in the beginning and 158.9 MB in the end (delta: 28.8 MB). Free memory was 99.0 MB in the beginning and 144.1 MB in the end (delta: -45.1 MB). Peak memory consumption was 719.5 kB. Max. memory is 7.1 GB. * RCFGBuilder took 421.49 ms. Allocated memory is still 158.9 MB. Free memory was 144.1 MB in the beginning and 126.5 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1085.60 ms. Allocated memory was 158.9 MB in the beginning and 186.1 MB in the end (delta: 27.3 MB). Free memory was 126.1 MB in the beginning and 153.7 MB in the end (delta: -27.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 40]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 12, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseAnd at line 23. Possible FailurePath: [L35] float x = 0.0f / 0.0f; [L36] CALL, EXPR fabs_float(x) [L15] __uint32_t ix; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (ix) = gf_u.word [L22] ieee_float_shape_type sf_u; [L23] sf_u.word = (ix & 0x7fffffff) [L24] EXPR sf_u.value [L24] (x) = sf_u.value [L26] return x; [L36] RET, EXPR fabs_float(x) [L36] float res = fabs_float(x); [L39] CALL, EXPR isnan_float(res) [L12] return x != x; [L39] RET, EXPR isnan_float(res) [L39] COND TRUE !isnan_float(res) [L40] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 13 SDslu, 30 SDs, 0 SdLazy, 53 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred 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, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 1222 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...