/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=LOWLEXORDER --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/double_req_bl_1032b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:30:07,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:30:07,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:30:07,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:30:07,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:30:07,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:30:07,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:30:07,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:30:07,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:30:07,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:30:07,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:30:07,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:30:07,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:30:07,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:30:07,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:30:07,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:30:07,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:30:07,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:30:07,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:30:07,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:30:07,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:30:07,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:30:07,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:30:07,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:30:07,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:30:07,351 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:30:07,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:30:07,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:30:07,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:30:07,354 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:30:07,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:30:07,355 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:30:07,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:30:07,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:30:07,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:30:07,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:30:07,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:30:07,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:30:07,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:30:07,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:30:07,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:30:07,362 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 [2020-09-24 21:30:07,390 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:30:07,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:30:07,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:30:07,391 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:30:07,392 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:30:07,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:30:07,392 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:30:07,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:30:07,392 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:30:07,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:30:07,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:30:07,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:30:07,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:30:07,394 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:30:07,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:30:07,394 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:30:07,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:30:07,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:30:07,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:30:07,395 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:30:07,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:30:07,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:30:07,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:30:07,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:30:07,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:30:07,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:30:07,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:30:07,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:30:07,397 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:30:07,397 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:30:07,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:30:07,915 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:30:07,920 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:30:07,922 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:30:07,922 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:30:07,923 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032b.c [2020-09-24 21:30:08,074 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55cc32540/577b35de40644f61b341f96ce4019f4d/FLAGf006f2baa [2020-09-24 21:30:08,637 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:30:08,638 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1032b.c [2020-09-24 21:30:08,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55cc32540/577b35de40644f61b341f96ce4019f4d/FLAGf006f2baa [2020-09-24 21:30:08,985 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55cc32540/577b35de40644f61b341f96ce4019f4d [2020-09-24 21:30:08,999 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:30:09,004 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:30:09,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:30:09,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:30:09,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:30:09,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:30:08" (1/1) ... [2020-09-24 21:30:09,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2016f310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:09, skipping insertion in model container [2020-09-24 21:30:09,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:30:08" (1/1) ... [2020-09-24 21:30:09,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:30:09,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:30:09,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:30:09,318 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:30:09,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:30:09,382 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:30:09,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:09 WrapperNode [2020-09-24 21:30:09,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:30:09,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:30:09,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:30:09,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:30:09,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:09" (1/1) ... [2020-09-24 21:30:09,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:09" (1/1) ... [2020-09-24 21:30:09,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:09" (1/1) ... [2020-09-24 21:30:09,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:09" (1/1) ... [2020-09-24 21:30:09,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:09" (1/1) ... [2020-09-24 21:30:09,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:09" (1/1) ... [2020-09-24 21:30:09,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:09" (1/1) ... [2020-09-24 21:30:09,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:30:09,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:30:09,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:30:09,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:30:09,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:09" (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 [2020-09-24 21:30:09,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:30:09,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:30:09,604 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-24 21:30:09,604 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2020-09-24 21:30:09,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-24 21:30:09,604 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:30:09,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:30:09,605 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-24 21:30:09,605 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2020-09-24 21:30:09,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 21:30:09,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 21:30:09,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:30:09,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:30:09,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:30:09,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 21:30:09,606 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-24 21:30:09,607 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:30:09,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:30:09,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:30:10,084 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:30:10,085 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-24 21:30:10,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:30:10 BoogieIcfgContainer [2020-09-24 21:30:10,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:30:10,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:30:10,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:30:10,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:30:10,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:30:08" (1/3) ... [2020-09-24 21:30:10,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b89c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:30:10, skipping insertion in model container [2020-09-24 21:30:10,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:09" (2/3) ... [2020-09-24 21:30:10,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b89c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:30:10, skipping insertion in model container [2020-09-24 21:30:10,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:30:10" (3/3) ... [2020-09-24 21:30:10,100 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032b.c [2020-09-24 21:30:10,113 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:30:10,124 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:30:10,147 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:30:10,180 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:30:10,180 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:30:10,180 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:30:10,181 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:30:10,181 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:30:10,181 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:30:10,181 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:30:10,181 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:30:10,206 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states. [2020-09-24 21:30:10,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 21:30:10,216 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:10,217 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] [2020-09-24 21:30:10,218 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:10,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:10,226 INFO L82 PathProgramCache]: Analyzing trace with hash -2016969319, now seen corresponding path program 1 times [2020-09-24 21:30:10,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:10,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348294012] [2020-09-24 21:30:10,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:10,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:10,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:10,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 21:30:10,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:10,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-24 21:30:10,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:10,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:10,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 21:30:10,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:10,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:30:10,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:30:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:10,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:10,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:10,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:30:10,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:10,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 21:30:10,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:10,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:10,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:10,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:10,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:10,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 21:30:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:10,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:10,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:10,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:30:10,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:10,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 21:30:10,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:10,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:10,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 21:30:10,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:10,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:10,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:30:10,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348294012] [2020-09-24 21:30:10,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:30:10,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:30:10,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491147062] [2020-09-24 21:30:10,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:30:10,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:30:10,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:30:10,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:30:10,720 INFO L87 Difference]: Start difference. First operand 104 states. Second operand 4 states. [2020-09-24 21:30:11,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:30:11,081 INFO L93 Difference]: Finished difference Result 194 states and 225 transitions. [2020-09-24 21:30:11,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 21:30:11,083 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-09-24 21:30:11,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:30:11,097 INFO L225 Difference]: With dead ends: 194 [2020-09-24 21:30:11,097 INFO L226 Difference]: Without dead ends: 96 [2020-09-24 21:30:11,102 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 [2020-09-24 21:30:11,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-24 21:30:11,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-09-24 21:30:11,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-24 21:30:11,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2020-09-24 21:30:11,163 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 29 [2020-09-24 21:30:11,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:30:11,164 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2020-09-24 21:30:11,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:30:11,164 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2020-09-24 21:30:11,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 21:30:11,167 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:11,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:30:11,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:30:11,168 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:11,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:11,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1112139357, now seen corresponding path program 1 times [2020-09-24 21:30:11,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:11,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712967250] [2020-09-24 21:30:11,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:11,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 21:30:11,261 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 21:30:11,261 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 21:30:11,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:30:11,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:30:11 BoogieIcfgContainer [2020-09-24 21:30:11,292 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:30:11,296 INFO L168 Benchmark]: Toolchain (without parser) took 2293.75 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 100.8 MB in the beginning and 86.1 MB in the end (delta: 14.8 MB). Peak memory consumption was 77.7 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:11,297 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 21:30:11,298 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.49 ms. Allocated memory is still 137.4 MB. Free memory was 100.2 MB in the beginning and 88.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:11,299 INFO L168 Benchmark]: Boogie Preprocessor took 141.88 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 88.6 MB in the beginning and 177.2 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:11,300 INFO L168 Benchmark]: RCFGBuilder took 564.93 ms. Allocated memory is still 200.3 MB. Free memory was 177.2 MB in the beginning and 149.5 MB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:11,301 INFO L168 Benchmark]: TraceAbstraction took 1199.85 ms. Allocated memory is still 200.3 MB. Free memory was 149.5 MB in the beginning and 86.1 MB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:11,305 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 377.49 ms. Allocated memory is still 137.4 MB. Free memory was 100.2 MB in the beginning and 88.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 141.88 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 88.6 MB in the beginning and 177.2 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 564.93 ms. Allocated memory is still 200.3 MB. Free memory was 177.2 MB in the beginning and 149.5 MB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1199.85 ms. Allocated memory is still 200.3 MB. Free memory was 149.5 MB in the beginning and 86.1 MB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 91]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 86, overapproximation of bitwiseAnd at line 26, overapproximation of someBinaryArithmeticDOUBLEoperation at line 43, overapproximation of someBinaryDOUBLEComparisonOperation at line 90. Possible FailurePath: [L86] double x = -0.0; [L87] CALL, EXPR round_double(x) [L18] __int32_t msw, exponent_less_1023; [L19] __uint32_t lsw; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L26] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L27] COND FALSE !(exponent_less_1023 < 20) [L41] COND TRUE exponent_less_1023 > 51 [L42] COND TRUE exponent_less_1023 == 1024 [L43] return x + x; [L87] RET, EXPR round_double(x) [L87] double res = round_double(x); [L90] EXPR res == -0.0 && __signbit_double(res) == 1 [L90] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L91] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 108 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 108 SDtfs, 15 SDslu, 82 SDs, 0 SdLazy, 120 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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=104occurred 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, 0.3s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 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...