/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_0832b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:48:09,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:48:09,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:48:09,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:48:09,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:48:09,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:48:09,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:48:09,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:48:09,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:48:09,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:48:09,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:48:09,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:48:09,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:48:09,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:48:09,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:48:09,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:48:09,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:48:09,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:48:09,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:48:09,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:48:09,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:48:09,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:48:09,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:48:09,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:48:09,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:48:09,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:48:09,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:48:09,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:48:09,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:48:09,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:48:09,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:48:09,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:48:09,720 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:48:09,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:48:09,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:48:09,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:48:09,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:48:09,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:48:09,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:48:09,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:48:09,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:48:09,731 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 [2020-10-14 04:48:09,768 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:48:09,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:48:09,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:48:09,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:48:09,770 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:48:09,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:48:09,771 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:48:09,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:48:09,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:48:09,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:48:09,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:48:09,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:48:09,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:48:09,772 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:48:09,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:48:09,772 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:48:09,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:48:09,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:48:09,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:48:09,773 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:48:09,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:48:09,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:48:09,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:48:09,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:48:09,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:48:09,774 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:48:09,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:48:09,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:48:09,775 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:48:09,775 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 -> 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:48:10,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:48:10,137 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:48:10,141 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:48:10,142 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:48:10,143 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:48:10,144 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0832b.c [2020-10-14 04:48:10,202 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4415341f6/e09061896965426691a808e4dc05bf62/FLAGe3de549c1 [2020-10-14 04:48:10,679 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:48:10,679 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0832b.c [2020-10-14 04:48:10,689 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4415341f6/e09061896965426691a808e4dc05bf62/FLAGe3de549c1 [2020-10-14 04:48:11,060 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4415341f6/e09061896965426691a808e4dc05bf62 [2020-10-14 04:48:11,069 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:48:11,071 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:48:11,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:48:11,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:48:11,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:48:11,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:48:11" (1/1) ... [2020-10-14 04:48:11,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e3cba46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:11, skipping insertion in model container [2020-10-14 04:48:11,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:48:11" (1/1) ... [2020-10-14 04:48:11,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:48:11,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:48:11,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:48:11,317 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:48:11,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:48:11,481 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:48:11,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:11 WrapperNode [2020-10-14 04:48:11,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:48:11,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:48:11,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:48:11,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:48:11,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:11" (1/1) ... [2020-10-14 04:48:11,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:11" (1/1) ... [2020-10-14 04:48:11,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:11" (1/1) ... [2020-10-14 04:48:11,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:11" (1/1) ... [2020-10-14 04:48:11,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:11" (1/1) ... [2020-10-14 04:48:11,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:11" (1/1) ... [2020-10-14 04:48:11,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:11" (1/1) ... [2020-10-14 04:48:11,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:48:11,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:48:11,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:48:11,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:48:11,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:11" (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 [2020-10-14 04:48:11,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:48:11,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:48:11,599 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-14 04:48:11,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_expf [2020-10-14 04:48:11,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:48:11,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:48:11,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-14 04:48:11,600 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-14 04:48:11,600 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_expf [2020-10-14 04:48:11,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 04:48:11,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 04:48:11,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:48:11,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:48:11,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 04:48:11,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:48:11,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:48:11,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:48:11,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-14 04:48:11,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:48:12,042 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:48:12,042 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-14 04:48:12,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:48:12 BoogieIcfgContainer [2020-10-14 04:48:12,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:48:12,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:48:12,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:48:12,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:48:12,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:48:11" (1/3) ... [2020-10-14 04:48:12,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a53a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:48:12, skipping insertion in model container [2020-10-14 04:48:12,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:11" (2/3) ... [2020-10-14 04:48:12,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a53a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:48:12, skipping insertion in model container [2020-10-14 04:48:12,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:48:12" (3/3) ... [2020-10-14 04:48:12,055 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0832b.c [2020-10-14 04:48:12,066 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:48:12,075 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:48:12,087 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:48:12,109 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:48:12,109 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:48:12,110 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:48:12,110 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:48:12,110 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:48:12,110 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:48:12,110 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:48:12,110 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:48:12,130 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-10-14 04:48:12,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-14 04:48:12,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:48:12,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:48:12,138 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:48:12,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:48:12,143 INFO L82 PathProgramCache]: Analyzing trace with hash 494829309, now seen corresponding path program 1 times [2020-10-14 04:48:12,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:48:12,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687478236] [2020-10-14 04:48:12,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:48:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:12,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:12,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:12,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 04:48:12,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:12,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 04:48:12,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:12,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:12,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:12,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 04:48:12,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:12,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:48:12,701 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-14 04:48:12,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:48:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:12,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:12,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:12,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:48:12,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:12,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 04:48:12,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:12,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:12,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:12,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:48:12,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:12,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:12,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:48:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:12,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:12,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:12,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:48:12,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:12,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 04:48:12,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:12,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 04:48:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:12,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:12,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:48:12,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687478236] [2020-10-14 04:48:12,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:48:12,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:48:12,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162495533] [2020-10-14 04:48:12,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:48:12,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:48:12,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:48:12,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:48:12,850 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 4 states. [2020-10-14 04:48:13,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:48:13,128 INFO L93 Difference]: Finished difference Result 82 states and 124 transitions. [2020-10-14 04:48:13,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 04:48:13,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-14 04:48:13,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:48:13,144 INFO L225 Difference]: With dead ends: 82 [2020-10-14 04:48:13,145 INFO L226 Difference]: Without dead ends: 41 [2020-10-14 04:48:13,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:48:13,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-14 04:48:13,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-14 04:48:13,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 04:48:13,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2020-10-14 04:48:13,213 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 16 [2020-10-14 04:48:13,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:48:13,214 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2020-10-14 04:48:13,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:48:13,215 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2020-10-14 04:48:13,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 04:48:13,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:48:13,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:48:13,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:48:13,219 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:48:13,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:48:13,220 INFO L82 PathProgramCache]: Analyzing trace with hash 850437080, now seen corresponding path program 1 times [2020-10-14 04:48:13,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:48:13,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889136485] [2020-10-14 04:48:13,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:48:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 04:48:13,309 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 04:48:13,310 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 04:48:13,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:48:13,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:48:13 BoogieIcfgContainer [2020-10-14 04:48:13,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 04:48:13,349 INFO L168 Benchmark]: Toolchain (without parser) took 2276.65 ms. Allocated memory was 148.4 MB in the beginning and 232.3 MB in the end (delta: 83.9 MB). Free memory was 104.1 MB in the beginning and 179.3 MB in the end (delta: -75.2 MB). Peak memory consumption was 8.7 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:13,351 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.5 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-14 04:48:13,352 INFO L168 Benchmark]: CACSL2BoogieTranslator took 410.51 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 103.7 MB in the beginning and 181.3 MB in the end (delta: -77.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:13,353 INFO L168 Benchmark]: Boogie Preprocessor took 55.25 ms. Allocated memory is still 205.0 MB. Free memory was 181.3 MB in the beginning and 178.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:13,354 INFO L168 Benchmark]: RCFGBuilder took 508.43 ms. Allocated memory is still 205.0 MB. Free memory was 178.6 MB in the beginning and 153.8 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:13,356 INFO L168 Benchmark]: TraceAbstraction took 1297.44 ms. Allocated memory was 205.0 MB in the beginning and 232.3 MB in the end (delta: 27.3 MB). Free memory was 152.8 MB in the beginning and 179.3 MB in the end (delta: -26.5 MB). Peak memory consumption was 770.3 kB. Max. memory is 7.1 GB. [2020-10-14 04:48:13,368 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.5 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 410.51 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 103.7 MB in the beginning and 181.3 MB in the end (delta: -77.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.25 ms. Allocated memory is still 205.0 MB. Free memory was 181.3 MB in the beginning and 178.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 508.43 ms. Allocated memory is still 205.0 MB. Free memory was 178.6 MB in the beginning and 153.8 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1297.44 ms. Allocated memory was 205.0 MB in the beginning and 232.3 MB in the end (delta: 27.3 MB). Free memory was 152.8 MB in the beginning and 179.3 MB in the end (delta: -26.5 MB). Peak memory consumption was 770.3 kB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 122]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 121, overapproximation of someUnaryDOUBLEoperation at line 19, overapproximation of bitwiseAnd at line 46, overapproximation of someUnaryFLOAToperation at line 117, overapproximation of someBinaryArithmeticFLOAToperation at line 50. Possible FailurePath: [L15-L34] static const float one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+30, twom100_exp = 7.8886090522e-31, ln2HI_exp[2] = { 6.9313812256e-01, -6.9313812256e-01, }, ln2LO_exp[2] = { 9.0580006145e-06, -9.0580006145e-06, }, invln2_exp = 1.4426950216e+00, P1_exp = 1.6666667163e-01, P2_exp = -2.7777778450e-03, P3_exp = 6.6137559770e-05, P4_exp = -1.6533901999e-06, P5_exp = 4.1381369442e-08; [L117] float x = -0.0f; [L118] CALL, EXPR __ieee754_expf(x) [L37] float y, hi, lo, c, t; [L38] __int32_t k = 0, xsb, sx; [L39] __uint32_t hx; [L42] ieee_float_shape_type gf_u; [L43] gf_u.value = (x) [L44] EXPR gf_u.word [L44] (sx) = gf_u.word [L46] xsb = (sx >> 31) & 1 [L47] hx = sx & 0x7fffffff [L49] COND TRUE ((hx) > 0x7f800000L) [L50] return x + x; [L118] RET, EXPR __ieee754_expf(x) [L118] float res = __ieee754_expf(x); [L121] COND TRUE res != 1.0f [L122] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 53 SDtfs, 4 SDslu, 45 SDs, 0 SdLazy, 57 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 1260 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...