/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=0.8 --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_1072c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:42:44,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:42:44,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:42:44,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:42:44,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:42:44,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:42:44,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:42:44,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:42:44,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:42:44,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:42:44,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:42:44,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:42:44,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:42:44,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:42:44,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:42:44,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:42:44,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:42:44,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:42:44,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:42:44,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:42:44,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:42:44,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:42:44,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:42:44,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:42:44,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:42:44,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:42:44,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:42:44,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:42:44,411 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:42:44,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:42:44,413 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:42:44,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:42:44,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:42:44,415 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:42:44,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:42:44,417 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:42:44,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:42:44,418 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:42:44,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:42:44,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:42:44,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:42:44,421 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 07:42:44,447 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:42:44,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:42:44,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:42:44,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:42:44,449 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:42:44,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:42:44,450 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:42:44,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:42:44,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:42:44,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:42:44,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:42:44,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:42:44,451 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:42:44,451 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:42:44,451 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:42:44,451 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:42:44,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:42:44,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:42:44,452 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:42:44,452 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:42:44,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:42:44,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:42:44,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:42:44,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:42:44,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:42:44,453 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:42:44,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:42:44,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:42:44,454 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:42:44,454 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-09-25 07:42:44,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:42:44,954 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:42:44,959 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:42:44,961 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:42:44,961 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:42:44,963 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1072c.c [2020-09-25 07:42:45,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d07a8e6ce/67a43f41553f442dbee9844b47230971/FLAGf49e00290 [2020-09-25 07:42:45,649 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:42:45,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1072c.c [2020-09-25 07:42:45,660 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d07a8e6ce/67a43f41553f442dbee9844b47230971/FLAGf49e00290 [2020-09-25 07:42:45,958 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d07a8e6ce/67a43f41553f442dbee9844b47230971 [2020-09-25 07:42:46,004 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:42:46,012 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:42:46,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:42:46,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:42:46,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:42:46,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:42:45" (1/1) ... [2020-09-25 07:42:46,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f72e2c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:46, skipping insertion in model container [2020-09-25 07:42:46,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:42:45" (1/1) ... [2020-09-25 07:42:46,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:42:46,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:42:46,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:42:46,349 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:42:46,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:42:46,403 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:42:46,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:46 WrapperNode [2020-09-25 07:42:46,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:42:46,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:42:46,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:42:46,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:42:46,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:46" (1/1) ... [2020-09-25 07:42:46,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:46" (1/1) ... [2020-09-25 07:42:46,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:46" (1/1) ... [2020-09-25 07:42:46,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:46" (1/1) ... [2020-09-25 07:42:46,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:46" (1/1) ... [2020-09-25 07:42:46,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:46" (1/1) ... [2020-09-25 07:42:46,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:46" (1/1) ... [2020-09-25 07:42:46,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:42:46,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:42:46,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:42:46,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:42:46,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:46" (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 07:42:46,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:42:46,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:42:46,617 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_float [2020-09-25 07:42:46,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-09-25 07:42:46,617 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:42:46,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:42:46,618 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_float [2020-09-25 07:42:46,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 07:42:46,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 07:42:46,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 07:42:46,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 07:42:46,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 07:42:46,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 07:42:46,619 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-09-25 07:42:46,619 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:42:46,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:42:46,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:42:47,039 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:42:47,039 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-25 07:42:47,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:42:47 BoogieIcfgContainer [2020-09-25 07:42:47,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:42:47,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:42:47,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:42:47,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:42:47,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:42:45" (1/3) ... [2020-09-25 07:42:47,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc6f53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:42:47, skipping insertion in model container [2020-09-25 07:42:47,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:46" (2/3) ... [2020-09-25 07:42:47,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc6f53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:42:47, skipping insertion in model container [2020-09-25 07:42:47,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:42:47" (3/3) ... [2020-09-25 07:42:47,056 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1072c.c [2020-09-25 07:42:47,068 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:42:47,078 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:42:47,099 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:42:47,128 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:42:47,128 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:42:47,128 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:42:47,128 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:42:47,128 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:42:47,129 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:42:47,129 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:42:47,129 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:42:47,152 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2020-09-25 07:42:47,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 07:42:47,160 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:42:47,161 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] [2020-09-25 07:42:47,162 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:42:47,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:42:47,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1005072347, now seen corresponding path program 1 times [2020-09-25 07:42:47,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:42:47,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382636265] [2020-09-25 07:42:47,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:42:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:47,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:47,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:47,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 07:42:47,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:47,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 07:42:47,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:47,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:47,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:47,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 07:42:47,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:47,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:42:47,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:42:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:47,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:47,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:47,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:42:47,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:47,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:42:47,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:47,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:47,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:47,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:42:47,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:47,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:47,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:42:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:47,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:47,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:47,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:42:47,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:47,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 07:42:47,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:47,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:47,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:47,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 07:42:47,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:47,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:47,631 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 07:42:47,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382636265] [2020-09-25 07:42:47,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:42:47,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:42:47,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321507397] [2020-09-25 07:42:47,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:42:47,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:42:47,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:42:47,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:42:47,666 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 4 states. [2020-09-25 07:42:47,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:42:47,929 INFO L93 Difference]: Finished difference Result 160 states and 185 transitions. [2020-09-25 07:42:47,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 07:42:47,931 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-09-25 07:42:47,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:42:47,944 INFO L225 Difference]: With dead ends: 160 [2020-09-25 07:42:47,944 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 07:42:47,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 07:42:47,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 07:42:48,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-09-25 07:42:48,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-25 07:42:48,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2020-09-25 07:42:48,011 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 29 [2020-09-25 07:42:48,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:42:48,011 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2020-09-25 07:42:48,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:42:48,012 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2020-09-25 07:42:48,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 07:42:48,014 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:42:48,014 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 07:42:48,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:42:48,015 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:42:48,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:42:48,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1440108655, now seen corresponding path program 1 times [2020-09-25 07:42:48,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:42:48,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691827603] [2020-09-25 07:42:48,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:42:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 07:42:48,079 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 07:42:48,079 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 07:42:48,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:42:48,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 07:42:48 BoogieIcfgContainer [2020-09-25 07:42:48,133 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 07:42:48,147 INFO L168 Benchmark]: Toolchain (without parser) took 2139.39 ms. Allocated memory was 145.8 MB in the beginning and 201.3 MB in the end (delta: 55.6 MB). Free memory was 101.5 MB in the beginning and 93.6 MB in the end (delta: 7.9 MB). Peak memory consumption was 63.5 MB. Max. memory is 7.1 GB. [2020-09-25 07:42:48,148 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 145.8 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 07:42:48,149 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.75 ms. Allocated memory is still 145.8 MB. Free memory was 100.9 MB in the beginning and 90.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-09-25 07:42:48,151 INFO L168 Benchmark]: Boogie Preprocessor took 137.21 ms. Allocated memory was 145.8 MB in the beginning and 201.3 MB in the end (delta: 55.6 MB). Free memory was 90.1 MB in the beginning and 178.5 MB in the end (delta: -88.4 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-25 07:42:48,152 INFO L168 Benchmark]: RCFGBuilder took 503.52 ms. Allocated memory is still 201.3 MB. Free memory was 178.5 MB in the beginning and 154.4 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-09-25 07:42:48,155 INFO L168 Benchmark]: TraceAbstraction took 1085.70 ms. Allocated memory is still 201.3 MB. Free memory was 154.4 MB in the beginning and 93.6 MB in the end (delta: 60.8 MB). Peak memory consumption was 60.8 MB. Max. memory is 7.1 GB. [2020-09-25 07:42:48,162 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 145.8 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 387.75 ms. Allocated memory is still 145.8 MB. Free memory was 100.9 MB in the beginning and 90.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.21 ms. Allocated memory was 145.8 MB in the beginning and 201.3 MB in the end (delta: 55.6 MB). Free memory was 90.1 MB in the beginning and 178.5 MB in the end (delta: -88.4 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 503.52 ms. Allocated memory is still 201.3 MB. Free memory was 178.5 MB in the beginning and 154.4 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1085.70 ms. Allocated memory is still 201.3 MB. Free memory was 154.4 MB in the beginning and 93.6 MB in the end (delta: 60.8 MB). Peak memory consumption was 60.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 67]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 66, overapproximation of bitwiseAnd at line 20, overapproximation of someBinaryArithmeticFLOAToperation at line 38. Possible FailurePath: [L62] float x = 0.0f; [L63] CALL, EXPR trunc_float(x) [L13] __int32_t signbit, w, exponent_less_127; [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (w) = gf_u.word [L19] signbit = w & 0x80000000 [L20] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 [L21] COND FALSE !(exponent_less_127 < 23) [L37] COND TRUE exponent_less_127 == 255 [L38] return x + x; [L63] RET, EXPR trunc_float(x) [L63] float res = trunc_float(x); [L66] EXPR res == 0.0f && __signbit_float(res) == 0 [L66] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L67] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 87 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 86 SDtfs, 15 SDslu, 59 SDs, 0 SdLazy, 99 SolverSat, 6 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred 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, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 1372 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...