/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=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0740.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:33:37,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:33:37,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:33:37,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:33:37,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:33:37,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:33:37,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:33:37,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:33:37,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:33:37,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:33:37,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:33:37,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:33:37,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:33:37,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:33:37,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:33:37,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:33:37,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:33:37,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:33:37,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:33:37,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:33:37,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:33:37,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:33:37,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:33:37,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:33:37,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:33:37,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:33:37,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:33:37,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:33:37,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:33:37,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:33:37,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:33:37,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:33:37,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:33:37,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:33:37,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:33:37,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:33:37,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:33:37,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:33:37,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:33:37,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:33:37,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:33:37,281 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 06:33:37,346 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:33:37,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:33:37,348 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:33:37,348 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:33:37,348 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:33:37,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:33:37,348 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:33:37,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:33:37,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:33:37,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:33:37,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:33:37,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:33:37,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:33:37,351 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:33:37,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:33:37,352 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:33:37,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:33:37,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:33:37,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:33:37,353 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:33:37,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:33:37,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:33:37,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:33:37,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:33:37,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:33:37,354 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:33:37,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:33:37,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:33:37,355 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:33:37,355 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:33:37,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:33:37,943 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:33:37,948 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:33:37,950 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:33:37,950 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:33:37,951 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0740.c [2020-09-25 06:33:38,049 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9385f9f4/28a68991edd64c8f8b64954bc9dc187c/FLAGb915516ec [2020-09-25 06:33:38,630 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:33:38,631 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0740.c [2020-09-25 06:33:38,640 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9385f9f4/28a68991edd64c8f8b64954bc9dc187c/FLAGb915516ec [2020-09-25 06:33:38,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9385f9f4/28a68991edd64c8f8b64954bc9dc187c [2020-09-25 06:33:38,965 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:33:38,971 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:33:38,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:33:38,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:33:38,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:33:38,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:33:38" (1/1) ... [2020-09-25 06:33:38,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aae5b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:38, skipping insertion in model container [2020-09-25 06:33:38,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:33:38" (1/1) ... [2020-09-25 06:33:38,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:33:39,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:33:39,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:33:39,290 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:33:39,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:33:39,452 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:33:39,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:39 WrapperNode [2020-09-25 06:33:39,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:33:39,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:33:39,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:33:39,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:33:39,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:39" (1/1) ... [2020-09-25 06:33:39,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:39" (1/1) ... [2020-09-25 06:33:39,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:39" (1/1) ... [2020-09-25 06:33:39,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:39" (1/1) ... [2020-09-25 06:33:39,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:39" (1/1) ... [2020-09-25 06:33:39,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:39" (1/1) ... [2020-09-25 06:33:39,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:39" (1/1) ... [2020-09-25 06:33:39,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:33:39,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:33:39,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:33:39,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:33:39,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:39" (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 06:33:39,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:33:39,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:33:39,630 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-09-25 06:33:39,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-09-25 06:33:39,630 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:33:39,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:33:39,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-25 06:33:39,631 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-09-25 06:33:39,631 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-09-25 06:33:39,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 06:33:39,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 06:33:39,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 06:33:39,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 06:33:39,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 06:33:39,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 06:33:39,633 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:33:39,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:33:39,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:33:40,108 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:33:40,109 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-25 06:33:40,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:33:40 BoogieIcfgContainer [2020-09-25 06:33:40,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:33:40,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:33:40,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:33:40,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:33:40,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:33:38" (1/3) ... [2020-09-25 06:33:40,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a0ccfc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:33:40, skipping insertion in model container [2020-09-25 06:33:40,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:39" (2/3) ... [2020-09-25 06:33:40,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a0ccfc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:33:40, skipping insertion in model container [2020-09-25 06:33:40,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:33:40" (3/3) ... [2020-09-25 06:33:40,125 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0740.c [2020-09-25 06:33:40,137 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:33:40,149 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:33:40,172 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:33:40,206 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:33:40,207 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:33:40,207 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:33:40,207 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:33:40,207 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:33:40,208 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:33:40,208 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:33:40,208 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:33:40,232 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2020-09-25 06:33:40,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 06:33:40,241 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:33:40,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:33:40,242 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:33:40,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:33:40,250 INFO L82 PathProgramCache]: Analyzing trace with hash -2082497467, now seen corresponding path program 1 times [2020-09-25 06:33:40,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:33:40,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229318780] [2020-09-25 06:33:40,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:33:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:40,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:40,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:40,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 06:33:40,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:40,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-25 06:33:40,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:40,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:40,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:40,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 06:33:40,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:40,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:33:40,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:33:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:40,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:40,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:40,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:33:40,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:40,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:33:40,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:40,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:40,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:40,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:33:40,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:40,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:40,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:33:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:40,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:40,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:40,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 06:33:40,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:40,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:33:40,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:40,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:40,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:40,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:33:40,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:40,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:40,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 06:33:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:40,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:40,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:40,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:33:40,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:40,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:33:40,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:40,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:40,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:40,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 06:33:40,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:40,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:33:40,776 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 06:33:40,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229318780] [2020-09-25 06:33:40,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:33:40,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:33:40,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014648308] [2020-09-25 06:33:40,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:33:40,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:33:40,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:33:40,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:33:40,813 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 4 states. [2020-09-25 06:33:41,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:33:41,138 INFO L93 Difference]: Finished difference Result 188 states and 222 transitions. [2020-09-25 06:33:41,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 06:33:41,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-09-25 06:33:41,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:33:41,157 INFO L225 Difference]: With dead ends: 188 [2020-09-25 06:33:41,157 INFO L226 Difference]: Without dead ends: 98 [2020-09-25 06:33:41,162 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 06:33:41,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-25 06:33:41,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-09-25 06:33:41,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-25 06:33:41,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2020-09-25 06:33:41,221 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 38 [2020-09-25 06:33:41,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:33:41,222 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2020-09-25 06:33:41,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:33:41,223 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2020-09-25 06:33:41,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 06:33:41,225 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:33:41,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:33:41,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:33:41,226 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:33:41,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:33:41,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1948696332, now seen corresponding path program 1 times [2020-09-25 06:33:41,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:33:41,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728711081] [2020-09-25 06:33:41,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:33:41,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 06:33:41,271 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 06:33:41,271 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 06:33:41,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:33:41,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 06:33:41 BoogieIcfgContainer [2020-09-25 06:33:41,299 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 06:33:41,303 INFO L168 Benchmark]: Toolchain (without parser) took 2335.45 ms. Allocated memory was 142.1 MB in the beginning and 232.3 MB in the end (delta: 90.2 MB). Free memory was 105.2 MB in the beginning and 188.7 MB in the end (delta: -83.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 7.1 GB. [2020-09-25 06:33:41,304 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 06:33:41,305 INFO L168 Benchmark]: CACSL2BoogieTranslator took 480.45 ms. Allocated memory was 142.1 MB in the beginning and 202.9 MB in the end (delta: 60.8 MB). Free memory was 104.5 MB in the beginning and 181.3 MB in the end (delta: -76.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-09-25 06:33:41,306 INFO L168 Benchmark]: Boogie Preprocessor took 76.40 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 179.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-09-25 06:33:41,307 INFO L168 Benchmark]: RCFGBuilder took 583.71 ms. Allocated memory is still 202.9 MB. Free memory was 179.1 MB in the beginning and 152.7 MB in the end (delta: 26.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2020-09-25 06:33:41,308 INFO L168 Benchmark]: TraceAbstraction took 1182.84 ms. Allocated memory was 202.9 MB in the beginning and 232.3 MB in the end (delta: 29.4 MB). Free memory was 152.7 MB in the beginning and 188.7 MB in the end (delta: -36.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 06:33:41,312 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 480.45 ms. Allocated memory was 142.1 MB in the beginning and 202.9 MB in the end (delta: 60.8 MB). Free memory was 104.5 MB in the beginning and 181.3 MB in the end (delta: -76.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 76.40 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 179.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 583.71 ms. Allocated memory is still 202.9 MB. Free memory was 179.1 MB in the beginning and 152.7 MB in the end (delta: 26.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1182.84 ms. Allocated memory was 202.9 MB in the beginning and 232.3 MB in the end (delta: 29.4 MB). Free memory was 152.7 MB in the beginning and 188.7 MB in the end (delta: -36.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 97]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 13, overapproximation of someBinaryArithmeticFLOAToperation at line 30, overapproximation of bitwiseAnd at line 27. Possible FailurePath: [L15] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L91] float x = -1.0f / 0.0f; [L93] CALL, EXPR __ieee754_sqrtf(x) [L18] float z; [L19] __uint32_t r, hx; [L20] __int32_t ix, s, q, m, t, i; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (ix) = gf_u.word [L27] hx = ix & 0x7fffffff [L29] COND TRUE !((hx) < 0x7f800000L) [L30] return x * x + x; [L93] RET, EXPR __ieee754_sqrtf(x) [L93] float res = __ieee754_sqrtf(x); [L96] CALL, EXPR isnan_float(res) [L13] return x != x; [L96] RET, EXPR isnan_float(res) [L96] COND TRUE !isnan_float(res) [L97] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 105 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 112 SDtfs, 29 SDslu, 83 SDs, 0 SdLazy, 110 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 2368 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...