/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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_1381.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:16:44,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:16:44,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:16:44,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:16:44,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:16:45,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:16:45,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:16:45,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:16:45,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:16:45,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:16:45,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:16:45,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:16:45,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:16:45,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:16:45,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:16:45,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:16:45,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:16:45,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:16:45,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:16:45,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:16:45,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:16:45,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:16:45,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:16:45,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:16:45,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:16:45,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:16:45,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:16:45,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:16:45,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:16:45,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:16:45,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:16:45,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:16:45,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:16:45,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:16:45,078 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:16:45,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:16:45,079 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:16:45,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:16:45,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:16:45,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:16:45,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:16:45,084 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 04:16:45,132 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:16:45,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:16:45,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:16:45,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:16:45,135 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:16:45,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:16:45,135 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:16:45,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:16:45,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:16:45,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:16:45,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:16:45,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:16:45,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:16:45,138 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:16:45,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:16:45,138 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:16:45,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:16:45,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:16:45,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:16:45,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:16:45,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:16:45,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:16:45,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:16:45,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:16:45,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:16:45,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:16:45,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:16:45,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:16:45,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:16:45,141 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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:16:45,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:16:45,691 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:16:45,696 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:16:45,698 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:16:45,698 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:16:45,700 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1381.c [2020-09-25 04:16:45,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5079a976c/a4585dcba7e14136911f1941637d46ce/FLAGaef4135db [2020-09-25 04:16:46,331 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:16:46,332 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1381.c [2020-09-25 04:16:46,342 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5079a976c/a4585dcba7e14136911f1941637d46ce/FLAGaef4135db [2020-09-25 04:16:46,653 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5079a976c/a4585dcba7e14136911f1941637d46ce [2020-09-25 04:16:46,669 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:16:46,677 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:16:46,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:16:46,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:16:46,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:16:46,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:16:46" (1/1) ... [2020-09-25 04:16:46,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12925ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:46, skipping insertion in model container [2020-09-25 04:16:46,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:16:46" (1/1) ... [2020-09-25 04:16:46,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:16:46,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:16:46,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:16:46,962 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:16:46,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:16:47,024 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:16:47,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:47 WrapperNode [2020-09-25 04:16:47,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:16:47,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:16:47,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:16:47,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:16:47,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:47" (1/1) ... [2020-09-25 04:16:47,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:47" (1/1) ... [2020-09-25 04:16:47,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:47" (1/1) ... [2020-09-25 04:16:47,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:47" (1/1) ... [2020-09-25 04:16:47,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:47" (1/1) ... [2020-09-25 04:16:47,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:47" (1/1) ... [2020-09-25 04:16:47,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:47" (1/1) ... [2020-09-25 04:16:47,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:16:47,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:16:47,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:16:47,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:16:47,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:47" (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 04:16:47,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:16:47,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:16:47,242 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_float [2020-09-25 04:16:47,243 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-09-25 04:16:47,243 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:16:47,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:16:47,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-25 04:16:47,243 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_float [2020-09-25 04:16:47,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 04:16:47,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 04:16:47,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 04:16:47,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 04:16:47,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 04:16:47,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 04:16:47,245 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-09-25 04:16:47,245 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:16:47,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:16:47,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:16:47,643 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:16:47,644 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-25 04:16:47,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:16:47 BoogieIcfgContainer [2020-09-25 04:16:47,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:16:47,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:16:47,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:16:47,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:16:47,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:16:46" (1/3) ... [2020-09-25 04:16:47,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@320609b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:16:47, skipping insertion in model container [2020-09-25 04:16:47,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:47" (2/3) ... [2020-09-25 04:16:47,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@320609b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:16:47, skipping insertion in model container [2020-09-25 04:16:47,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:16:47" (3/3) ... [2020-09-25 04:16:47,660 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1381.c [2020-09-25 04:16:47,670 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:16:47,681 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:16:47,704 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:16:47,734 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:16:47,735 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:16:47,735 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:16:47,735 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:16:47,735 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:16:47,735 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:16:47,735 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:16:47,735 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:16:47,758 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-09-25 04:16:47,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 04:16:47,766 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:16:47,767 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] [2020-09-25 04:16:47,767 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:16:47,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:16:47,774 INFO L82 PathProgramCache]: Analyzing trace with hash 658521785, now seen corresponding path program 1 times [2020-09-25 04:16:47,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:16:47,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345038452] [2020-09-25 04:16:47,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:16:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:47,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:47,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:48,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:48,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:48,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 04:16:48,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:16:48,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-09-25 04:16:48,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:48,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:48,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:16:48,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 04:16:48,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:16:48,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:16:48,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:16:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:48,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:48,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:48,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:16:48,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:16:48,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:16:48,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:48,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:48,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:16:48,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:16:48,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:16:48,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:16:48,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:16:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:48,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:48,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:48,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:48,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:48,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 04:16:48,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:16:48,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:16:48,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:48,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:48,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:16:48,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:16:48,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:16:48,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:16:48,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 04:16:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:48,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:48,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:48,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 04:16:48,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:16:48,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:16:48,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:48,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:48,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:16:48,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 04:16:48,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:16:48,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:16:48,343 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 04:16:48,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345038452] [2020-09-25 04:16:48,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:16:48,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:16:48,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584766265] [2020-09-25 04:16:48,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:16:48,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:16:48,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:16:48,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:16:48,377 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 4 states. [2020-09-25 04:16:48,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:16:48,583 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2020-09-25 04:16:48,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 04:16:48,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-09-25 04:16:48,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:16:48,600 INFO L225 Difference]: With dead ends: 118 [2020-09-25 04:16:48,600 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 04:16:48,605 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 04:16:48,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 04:16:48,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-25 04:16:48,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 04:16:48,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 59 transitions. [2020-09-25 04:16:48,663 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 59 transitions. Word has length 32 [2020-09-25 04:16:48,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:16:48,663 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 59 transitions. [2020-09-25 04:16:48,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:16:48,664 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 59 transitions. [2020-09-25 04:16:48,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 04:16:48,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:16:48,666 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:16:48,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:16:48,667 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:16:48,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:16:48,668 INFO L82 PathProgramCache]: Analyzing trace with hash 418826666, now seen corresponding path program 1 times [2020-09-25 04:16:48,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:16:48,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687599574] [2020-09-25 04:16:48,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:16:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 04:16:48,720 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 04:16:48,720 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 04:16:48,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:16:48,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 04:16:48 BoogieIcfgContainer [2020-09-25 04:16:48,749 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 04:16:48,753 INFO L168 Benchmark]: Toolchain (without parser) took 2080.64 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 99.7 MB in the beginning and 96.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 66.4 MB. Max. memory is 7.1 GB. [2020-09-25 04:16:48,754 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 118.1 MB in the beginning and 117.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 04:16:48,755 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.62 ms. Allocated memory is still 137.9 MB. Free memory was 99.1 MB in the beginning and 88.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-25 04:16:48,756 INFO L168 Benchmark]: Boogie Preprocessor took 135.92 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 88.7 MB in the beginning and 178.6 MB in the end (delta: -89.9 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-09-25 04:16:48,757 INFO L168 Benchmark]: RCFGBuilder took 488.40 ms. Allocated memory is still 200.8 MB. Free memory was 177.9 MB in the beginning and 157.8 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-09-25 04:16:48,758 INFO L168 Benchmark]: TraceAbstraction took 1098.16 ms. Allocated memory is still 200.8 MB. Free memory was 157.1 MB in the beginning and 96.2 MB in the end (delta: 60.9 MB). Peak memory consumption was 60.9 MB. Max. memory is 7.1 GB. [2020-09-25 04:16:48,762 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 118.1 MB in the beginning and 117.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 343.62 ms. Allocated memory is still 137.9 MB. Free memory was 99.1 MB in the beginning and 88.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.92 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 88.7 MB in the beginning and 178.6 MB in the end (delta: -89.9 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 488.40 ms. Allocated memory is still 200.8 MB. Free memory was 177.9 MB in the beginning and 157.8 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1098.16 ms. Allocated memory is still 200.8 MB. Free memory was 157.1 MB in the beginning and 96.2 MB in the end (delta: 60.9 MB). Peak memory consumption was 60.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 49]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 33, overapproximation of bitwiseOr at line 26, overapproximation of someBinaryArithmeticFLOAToperation at line 43. Possible FailurePath: [L43] float x = 0.0f / 0.0f; [L44] float y = __VERIFIER_nondet_float(); [L45] CALL, EXPR copysign_float(x, y) [L13] __uint32_t ix, iy; [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (ix) = gf_u.word [L20] ieee_float_shape_type gf_u; [L21] gf_u.value = (y) [L22] EXPR gf_u.word [L22] (iy) = gf_u.word [L25] ieee_float_shape_type sf_u; [L26] sf_u.word = ((ix & 0x7fffffff) | (iy & 0x80000000)) [L27] EXPR sf_u.value [L27] (x) = sf_u.value [L29] return x; [L45] RET, EXPR copysign_float(x, y) [L45] float res = copysign_float(x, y); [L48] CALL, EXPR isnan_float(res) [L33] return x != x; [L48] RET, EXPR isnan_float(res) [L48] COND TRUE !isnan_float(res) [L49] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 67 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: 63 SDtfs, 21 SDslu, 35 SDs, 0 SdLazy, 68 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s 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=67occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 1612 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...