/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=BIGGEST --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/double_req_bl_0833.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:31:12,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:31:12,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:31:12,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:31:12,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:31:12,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:31:12,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:31:12,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:31:12,472 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:31:12,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:31:12,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:31:12,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:31:12,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:31:12,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:31:12,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:31:12,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:31:12,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:31:12,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:31:12,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:31:12,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:31:12,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:31:12,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:31:12,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:31:12,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:31:12,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:31:12,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:31:12,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:31:12,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:31:12,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:31:12,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:31:12,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:31:12,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:31:12,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:31:12,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:31:12,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:31:12,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:31:12,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:31:12,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:31:12,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:31:12,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:31:12,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:31:12,499 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 [2020-10-12 15:31:12,523 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:31:12,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:31:12,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:31:12,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:31:12,524 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:31:12,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:31:12,525 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:31:12,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:31:12,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:31:12,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:31:12,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:31:12,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:31:12,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:31:12,526 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:31:12,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:31:12,526 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:31:12,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:31:12,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:31:12,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:31:12,527 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:31:12,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:31:12,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:31:12,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:31:12,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:31:12,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:31:12,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:31:12,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:31:12,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:31:12,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:31:12,529 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:31:12,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:31:12,841 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:31:12,846 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:31:12,849 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:31:12,850 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:31:12,850 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0833.c [2020-10-12 15:31:12,905 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48c15ce5b/3bd3ccfa8d6348cca75e1dd3a5988ce5/FLAGb9879ae89 [2020-10-12 15:31:13,349 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:31:13,350 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0833.c [2020-10-12 15:31:13,357 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48c15ce5b/3bd3ccfa8d6348cca75e1dd3a5988ce5/FLAGb9879ae89 [2020-10-12 15:31:13,745 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48c15ce5b/3bd3ccfa8d6348cca75e1dd3a5988ce5 [2020-10-12 15:31:13,754 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:31:13,756 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:31:13,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:31:13,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:31:13,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:31:13,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:31:13" (1/1) ... [2020-10-12 15:31:13,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab111fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:13, skipping insertion in model container [2020-10-12 15:31:13,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:31:13" (1/1) ... [2020-10-12 15:31:13,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:31:13,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:31:14,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:31:14,091 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:31:14,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:31:14,254 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:31:14,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:14 WrapperNode [2020-10-12 15:31:14,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:31:14,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:31:14,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:31:14,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:31:14,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:14" (1/1) ... [2020-10-12 15:31:14,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:14" (1/1) ... [2020-10-12 15:31:14,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:14" (1/1) ... [2020-10-12 15:31:14,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:14" (1/1) ... [2020-10-12 15:31:14,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:14" (1/1) ... [2020-10-12 15:31:14,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:14" (1/1) ... [2020-10-12 15:31:14,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:14" (1/1) ... [2020-10-12 15:31:14,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:31:14,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:31:14,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:31:14,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:31:14,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:14" (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 [2020-10-12 15:31:14,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:31:14,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:31:14,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_exp [2020-10-12 15:31:14,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-12 15:31:14,374 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:31:14,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:31:14,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-12 15:31:14,375 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_exp [2020-10-12 15:31:14,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 15:31:14,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-12 15:31:14,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:31:14,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:31:14,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-12 15:31:14,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:31:14,376 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-12 15:31:14,383 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:31:14,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:31:14,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-12 15:31:14,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:31:14,849 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:31:14,850 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-12 15:31:14,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:31:14 BoogieIcfgContainer [2020-10-12 15:31:14,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:31:14,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:31:14,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:31:14,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:31:14,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:31:13" (1/3) ... [2020-10-12 15:31:14,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a187591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:31:14, skipping insertion in model container [2020-10-12 15:31:14,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:14" (2/3) ... [2020-10-12 15:31:14,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a187591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:31:14, skipping insertion in model container [2020-10-12 15:31:14,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:31:14" (3/3) ... [2020-10-12 15:31:14,870 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0833.c [2020-10-12 15:31:14,879 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:31:14,888 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:31:14,899 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:31:14,923 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:31:14,924 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:31:14,924 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:31:14,924 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:31:14,924 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:31:14,925 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:31:14,925 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:31:14,925 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:31:14,952 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2020-10-12 15:31:14,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-12 15:31:14,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:31:14,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:31:14,963 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:31:14,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:31:14,970 INFO L82 PathProgramCache]: Analyzing trace with hash -2127436982, now seen corresponding path program 1 times [2020-10-12 15:31:14,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:31:14,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179159277] [2020-10-12 15:31:14,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:31:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:15,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:15,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:15,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 15:31:15,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:31:15,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-12 15:31:15,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:15,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:31:15,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 15:31:15,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:31:15,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:31:15,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:31:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:15,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:15,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:15,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:31:15,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:31:15,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 15:31:15,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:15,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:31:15,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:31:15,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:31:15,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:31:15,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:31:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:15,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:15,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:15,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 15:31:15,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:31:15,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 15:31:15,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:15,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:31:15,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 15:31:15,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:31:15,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:31:15,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:31:15,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179159277] [2020-10-12 15:31:15,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:31:15,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:31:15,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092470438] [2020-10-12 15:31:15,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:31:15,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:31:15,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:31:15,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:31:15,673 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 4 states. [2020-10-12 15:31:15,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:31:15,991 INFO L93 Difference]: Finished difference Result 106 states and 161 transitions. [2020-10-12 15:31:15,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:31:15,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-12 15:31:15,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:31:16,003 INFO L225 Difference]: With dead ends: 106 [2020-10-12 15:31:16,004 INFO L226 Difference]: Without dead ends: 53 [2020-10-12 15:31:16,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:31:16,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-12 15:31:16,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-12 15:31:16,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-12 15:31:16,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 65 transitions. [2020-10-12 15:31:16,054 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 65 transitions. Word has length 19 [2020-10-12 15:31:16,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:31:16,054 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 65 transitions. [2020-10-12 15:31:16,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:31:16,055 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 65 transitions. [2020-10-12 15:31:16,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 15:31:16,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:31:16,056 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] [2020-10-12 15:31:16,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:31:16,057 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:31:16,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:31:16,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1556907089, now seen corresponding path program 1 times [2020-10-12 15:31:16,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:31:16,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868838936] [2020-10-12 15:31:16,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:31:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 15:31:16,104 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 15:31:16,104 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 15:31:16,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:31:16,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:31:16 BoogieIcfgContainer [2020-10-12 15:31:16,143 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:31:16,146 INFO L168 Benchmark]: Toolchain (without parser) took 2389.24 ms. Allocated memory was 138.4 MB in the beginning and 232.3 MB in the end (delta: 93.8 MB). Free memory was 101.5 MB in the beginning and 168.7 MB in the end (delta: -67.2 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:16,147 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 15:31:16,148 INFO L168 Benchmark]: CACSL2BoogieTranslator took 498.96 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 101.3 MB in the beginning and 176.6 MB in the end (delta: -75.3 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:16,149 INFO L168 Benchmark]: Boogie Preprocessor took 54.40 ms. Allocated memory is still 200.8 MB. Free memory was 176.6 MB in the beginning and 173.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:16,150 INFO L168 Benchmark]: RCFGBuilder took 542.99 ms. Allocated memory is still 200.8 MB. Free memory was 173.8 MB in the beginning and 143.9 MB in the end (delta: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:16,151 INFO L168 Benchmark]: TraceAbstraction took 1288.03 ms. Allocated memory was 200.8 MB in the beginning and 232.3 MB in the end (delta: 31.5 MB). Free memory was 143.2 MB in the beginning and 168.7 MB in the end (delta: -25.4 MB). Peak memory consumption was 6.0 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:16,155 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 498.96 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 101.3 MB in the beginning and 176.6 MB in the end (delta: -75.3 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.40 ms. Allocated memory is still 200.8 MB. Free memory was 176.6 MB in the beginning and 173.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 542.99 ms. Allocated memory is still 200.8 MB. Free memory was 173.8 MB in the beginning and 143.9 MB in the end (delta: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1288.03 ms. Allocated memory was 200.8 MB in the beginning and 232.3 MB in the end (delta: 31.5 MB). Free memory was 143.2 MB in the beginning and 168.7 MB in the end (delta: -25.4 MB). Peak memory consumption was 6.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 153]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 21, overapproximation of someBinaryArithmeticDOUBLEoperation at line 71, overapproximation of bitwiseAnd at line 54, overapproximation of someBinaryDOUBLEComparisonOperation at line 152. Possible FailurePath: [L17-L42] static const double one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+300, twom1000_exp = 9.33263618503218878990e-302, o_threshold_exp = 7.09782712893383973096e+02, u_threshold_exp = -7.45133219101941108420e+02, ln2HI_exp[2] = { 6.93147180369123816490e-01, -6.93147180369123816490e-01, }, ln2LO_exp[2] = { 1.90821492927058770002e-10, -1.90821492927058770002e-10, }, invln2_exp = 1.44269504088896338700e+00, P1_exp = 1.66666666666666019037e-01, P2_exp = -2.77777777770155933842e-03, P3_exp = 6.61375632143793436117e-05, P4_exp = -1.65339022054652515390e-06, P5_exp = 4.13813679705723846039e-08; [L149] double x = -1.0 / 0.0; [L150] CALL, EXPR __ieee754_exp(x) [L45] double y, hi, lo, c, t; [L46] __int32_t k = 0, xsb; [L47] __uint32_t hx; [L50] ieee_double_shape_type gh_u; [L51] gh_u.value = (x) [L52] EXPR gh_u.parts.msw [L52] (hx) = gh_u.parts.msw [L54] xsb = (hx >> 31) & 1 [L55] hx &= 0x7fffffff [L57] COND TRUE hx >= 0x40862E42 [L58] COND FALSE !(hx >= 0x7ff00000) [L70] COND TRUE x > o_threshold_exp [L71] return huge_exp * huge_exp; [L150] RET, EXPR __ieee754_exp(x) [L150] double res = __ieee754_exp(x); [L152] EXPR res == 0.0 && __signbit_double(res) == 0 [L152] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L153] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 66 SDtfs, 6 SDslu, 56 SDs, 0 SdLazy, 71 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, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 1674 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...