/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0250b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:19:13,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:19:13,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:19:13,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:19:13,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:19:13,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:19:13,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:19:13,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:19:13,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:19:13,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:19:13,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:19:13,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:19:13,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:19:13,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:19:13,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:19:13,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:19:13,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:19:13,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:19:13,431 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:19:13,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:19:13,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:19:13,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:19:13,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:19:13,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:19:13,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:19:13,440 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:19:13,440 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:19:13,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:19:13,441 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:19:13,442 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:19:13,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:19:13,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:19:13,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:19:13,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:19:13,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:19:13,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:19:13,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:19:13,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:19:13,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:19:13,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:19:13,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:19:13,450 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 10:19:13,473 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:19:13,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:19:13,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:19:13,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:19:13,476 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:19:13,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:19:13,476 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:19:13,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:19:13,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:19:13,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:19:13,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:19:13,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:19:13,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:19:13,477 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:19:13,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:19:13,478 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:19:13,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:19:13,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:19:13,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:19:13,479 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:19:13,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:19:13,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:19:13,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:19:13,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:19:13,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:19:13,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:19:13,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:19:13,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:19:13,483 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:19:13,484 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:19:13,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:19:13,803 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:19:13,813 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:19:13,815 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:19:13,818 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:19:13,819 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0250b.c [2020-10-13 10:19:13,896 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/327c5cb1d/7e7444f7d6f34ac7af959fbeef2a8f58/FLAG6dddc5860 [2020-10-13 10:19:14,384 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:19:14,385 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0250b.c [2020-10-13 10:19:14,397 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/327c5cb1d/7e7444f7d6f34ac7af959fbeef2a8f58/FLAG6dddc5860 [2020-10-13 10:19:14,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/327c5cb1d/7e7444f7d6f34ac7af959fbeef2a8f58 [2020-10-13 10:19:14,765 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:19:14,767 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:19:14,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:19:14,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:19:14,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:19:14,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:19:14" (1/1) ... [2020-10-13 10:19:14,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27dd7b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:14, skipping insertion in model container [2020-10-13 10:19:14,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:19:14" (1/1) ... [2020-10-13 10:19:14,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:19:14,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:19:15,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:19:15,090 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:19:15,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:19:15,297 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:19:15,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:15 WrapperNode [2020-10-13 10:19:15,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:19:15,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:19:15,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:19:15,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:19:15,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:15" (1/1) ... [2020-10-13 10:19:15,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:15" (1/1) ... [2020-10-13 10:19:15,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:15" (1/1) ... [2020-10-13 10:19:15,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:15" (1/1) ... [2020-10-13 10:19:15,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:15" (1/1) ... [2020-10-13 10:19:15,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:15" (1/1) ... [2020-10-13 10:19:15,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:15" (1/1) ... [2020-10-13 10:19:15,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:19:15,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:19:15,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:19:15,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:19:15,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:19:15,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:19:15,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:19:15,436 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2020-10-13 10:19:15,436 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-13 10:19:15,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-10-13 10:19:15,436 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-13 10:19:15,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_asinf [2020-10-13 10:19:15,437 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:19:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:19:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-13 10:19:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2020-10-13 10:19:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:19:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 10:19:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:19:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:19:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:19:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 10:19:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-13 10:19:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-10-13 10:19:15,439 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-13 10:19:15,439 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_asinf [2020-10-13 10:19:15,439 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:19:15,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:19:15,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:19:16,060 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:19:16,060 INFO L295 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-13 10:19:16,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:19:16 BoogieIcfgContainer [2020-10-13 10:19:16,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:19:16,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:19:16,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:19:16,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:19:16,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:19:14" (1/3) ... [2020-10-13 10:19:16,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54bc20bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:19:16, skipping insertion in model container [2020-10-13 10:19:16,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:15" (2/3) ... [2020-10-13 10:19:16,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54bc20bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:19:16, skipping insertion in model container [2020-10-13 10:19:16,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:19:16" (3/3) ... [2020-10-13 10:19:16,075 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0250b.c [2020-10-13 10:19:16,085 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:19:16,093 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:19:16,107 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:19:16,129 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:19:16,129 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:19:16,129 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:19:16,129 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:19:16,130 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:19:16,130 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:19:16,130 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:19:16,130 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:19:16,148 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-10-13 10:19:16,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 10:19:16,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:19:16,155 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] [2020-10-13 10:19:16,156 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:19:16,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:19:16,162 INFO L82 PathProgramCache]: Analyzing trace with hash 999120398, now seen corresponding path program 1 times [2020-10-13 10:19:16,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:19:16,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753031994] [2020-10-13 10:19:16,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:19:16,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:16,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:16,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:16,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 10:19:16,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:16,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-13 10:19:16,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:16,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:16,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 10:19:16,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:16,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:19:16,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:19:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:16,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:16,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:16,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:19:16,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:16,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 10:19:16,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:16,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:16,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:19:16,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:16,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:19:16,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:19:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:16,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:16,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:16,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:19:16,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:16,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 10:19:16,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:19:16,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:16,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:19:16,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 10:19:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:16,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:16,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:16,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:19:16,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:16,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 10:19:16,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:16,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:16,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:19:16,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:16,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:19:16,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:19:16,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753031994] [2020-10-13 10:19:16,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:19:16,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:19:16,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805390517] [2020-10-13 10:19:16,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:19:16,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:19:16,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:19:16,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:19:16,807 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2020-10-13 10:19:17,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:19:17,241 INFO L93 Difference]: Finished difference Result 144 states and 214 transitions. [2020-10-13 10:19:17,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:19:17,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-13 10:19:17,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:19:17,254 INFO L225 Difference]: With dead ends: 144 [2020-10-13 10:19:17,254 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 10:19:17,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:19:17,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 10:19:17,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-13 10:19:17,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-13 10:19:17,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2020-10-13 10:19:17,312 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 21 [2020-10-13 10:19:17,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:19:17,313 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2020-10-13 10:19:17,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:19:17,313 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2020-10-13 10:19:17,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-13 10:19:17,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:19:17,315 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] [2020-10-13 10:19:17,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:19:17,316 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:19:17,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:19:17,316 INFO L82 PathProgramCache]: Analyzing trace with hash 952293865, now seen corresponding path program 1 times [2020-10-13 10:19:17,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:19:17,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420061623] [2020-10-13 10:19:17,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:19:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:19:17,356 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:19:17,357 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:19:17,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:19:17,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:19:17 BoogieIcfgContainer [2020-10-13 10:19:17,397 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:19:17,400 INFO L168 Benchmark]: Toolchain (without parser) took 2632.35 ms. Allocated memory was 146.8 MB in the beginning and 236.5 MB in the end (delta: 89.7 MB). Free memory was 102.7 MB in the beginning and 141.6 MB in the end (delta: -38.9 MB). Peak memory consumption was 50.7 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:17,403 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 10:19:17,404 INFO L168 Benchmark]: CACSL2BoogieTranslator took 530.09 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 102.5 MB in the beginning and 178.0 MB in the end (delta: -75.5 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:17,405 INFO L168 Benchmark]: Boogie Preprocessor took 68.69 ms. Allocated memory is still 203.4 MB. Free memory was 178.0 MB in the beginning and 175.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:17,406 INFO L168 Benchmark]: RCFGBuilder took 698.29 ms. Allocated memory is still 203.4 MB. Free memory was 175.4 MB in the beginning and 137.1 MB in the end (delta: 38.2 MB). Peak memory consumption was 38.2 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:17,408 INFO L168 Benchmark]: TraceAbstraction took 1329.63 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 136.5 MB in the beginning and 141.6 MB in the end (delta: -5.1 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:17,418 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 530.09 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 102.5 MB in the beginning and 178.0 MB in the end (delta: -75.5 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 68.69 ms. Allocated memory is still 203.4 MB. Free memory was 178.0 MB in the beginning and 175.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 698.29 ms. Allocated memory is still 203.4 MB. Free memory was 175.4 MB in the beginning and 137.1 MB in the end (delta: 38.2 MB). Peak memory consumption was 38.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1329.63 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 136.5 MB in the beginning and 141.6 MB in the end (delta: -5.1 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 233]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 58, overapproximation of someUnaryDOUBLEoperation at line 147, overapproximation of bitwiseAnd at line 161, overapproximation of someUnaryFLOAToperation at line 145, overapproximation of someBinaryArithmeticFLOAToperation at line 164. Possible FailurePath: [L12] static const float huge_floor = 1.0e30; [L60] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L143-L151] static const float one_asin = 1.0000000000e+00, huge_asin = 1.000e+30, pio2_hi_asin = 1.57079637050628662109375f, pio2_lo_asin = -4.37113900018624283e-8f, pio4_hi_asin = 0.785398185253143310546875f, pS0_asin = 1.6666667163e-01, pS1_asin = -3.2556581497e-01, pS2_asin = 2.0121252537e-01, pS3_asin = -4.0055535734e-02, pS4_asin = 7.9153501429e-04, pS5_asin = 3.4793309169e-05, qS1_asin = -2.4033949375e+00, qS2_asin = 2.0209457874e+00, qS3_asin = -6.8828397989e-01, qS4_asin = 7.7038154006e-02; [L228] float x = -1.0f / 0.0f; [L229] CALL, EXPR __ieee754_asinf(x) [L154] float t, w, p, q, c, r, s; [L155] __int32_t hx, ix; [L157] ieee_float_shape_type gf_u; [L158] gf_u.value = (x) [L159] EXPR gf_u.word [L159] (hx) = gf_u.word [L161] ix = hx & 0x7fffffff [L162] COND TRUE ix == 0x3f800000 [L164] return x * pio2_hi_asin + x * pio2_lo_asin; [L229] RET, EXPR __ieee754_asinf(x) [L229] float res = __ieee754_asinf(x); [L232] CALL, EXPR isnan_float(res) [L58] return x != x; [L232] RET, EXPR isnan_float(res) [L232] COND TRUE !isnan_float(res) [L233] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 95 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 81 SDtfs, 77 SDslu, 5 SDs, 0 SdLazy, 93 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred 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, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 1900 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...