/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=DEEPEST --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 language data_model -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0730c.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:42:41,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:42:41,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:42:41,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:42:41,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:42:41,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:42:41,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:42:41,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:42:41,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:42:41,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:42:41,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:42:41,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:42:41,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:42:41,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:42:41,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:42:41,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:42:41,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:42:41,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:42:41,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:42:41,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:42:41,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:42:41,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:42:41,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:42:41,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:42:41,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:42:41,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:42:41,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:42:41,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:42:41,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:42:41,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:42:41,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:42:41,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:42:41,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:42:41,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:42:41,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:42:41,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:42:41,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:42:41,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:42:41,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:42:41,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:42:41,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:42:41,460 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 [2020-10-27 19:42:41,487 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:42:41,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:42:41,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:42:41,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:42:41,490 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:42:41,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:42:41,490 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:42:41,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:42:41,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:42:41,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:42:41,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:42:41,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:42:41,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:42:41,492 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:42:41,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:42:41,493 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:42:41,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:42:41,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:42:41,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:42:41,494 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:42:41,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:42:41,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:42:41,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:42:41,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:42:41,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:42:41,496 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:42:41,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:42:41,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:42:41,496 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:42:41,497 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:42:41,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:42:41,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:42:41,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:42:41,903 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:42:41,906 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:42:41,907 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0730c.c [2020-10-27 19:42:42,001 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/11c513874/632692f1cf9c41a4968cc046aa47355b/FLAG67b90ecca [2020-10-27 19:42:42,671 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:42:42,671 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0730c.c [2020-10-27 19:42:42,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/11c513874/632692f1cf9c41a4968cc046aa47355b/FLAG67b90ecca [2020-10-27 19:42:43,035 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/11c513874/632692f1cf9c41a4968cc046aa47355b [2020-10-27 19:42:43,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:42:43,049 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:42:43,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:42:43,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:42:43,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:42:43,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:42:43" (1/1) ... [2020-10-27 19:42:43,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15e82a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:43, skipping insertion in model container [2020-10-27 19:42:43,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:42:43" (1/1) ... [2020-10-27 19:42:43,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:42:43,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:42:43,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:42:43,368 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:42:43,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:42:43,493 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:42:43,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:43 WrapperNode [2020-10-27 19:42:43,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:42:43,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:42:43,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:42:43,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:42:43,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:43" (1/1) ... [2020-10-27 19:42:43,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:43" (1/1) ... [2020-10-27 19:42:43,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:43" (1/1) ... [2020-10-27 19:42:43,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:43" (1/1) ... [2020-10-27 19:42:43,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:43" (1/1) ... [2020-10-27 19:42:43,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:43" (1/1) ... [2020-10-27 19:42:43,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:43" (1/1) ... [2020-10-27 19:42:43,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:42:43,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:42:43,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:42:43,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:42:43,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:43" (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 [2020-10-27 19:42:43,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:42:43,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:42:43,637 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:42:43,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2020-10-27 19:42:43,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-27 19:42:43,639 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:42:43,639 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:42:43,639 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:42:43,639 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:42:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:42:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-27 19:42:43,642 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2020-10-27 19:42:43,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 19:42:43,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:42:43,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:42:43,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:42:43,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 19:42:43,644 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-27 19:42:43,645 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:42:43,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:42:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:42:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:42:44,418 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:42:44,418 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-27 19:42:44,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:42:44 BoogieIcfgContainer [2020-10-27 19:42:44,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:42:44,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:42:44,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:42:44,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:42:44,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:42:43" (1/3) ... [2020-10-27 19:42:44,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7dd68b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:42:44, skipping insertion in model container [2020-10-27 19:42:44,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:43" (2/3) ... [2020-10-27 19:42:44,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7dd68b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:42:44, skipping insertion in model container [2020-10-27 19:42:44,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:42:44" (3/3) ... [2020-10-27 19:42:44,440 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730c.c [2020-10-27 19:42:44,454 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:42:44,460 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:42:44,474 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:42:44,502 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:42:44,503 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:42:44,503 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:42:44,503 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:42:44,503 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:42:44,503 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:42:44,503 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:42:44,504 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:42:44,522 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2020-10-27 19:42:44,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-27 19:42:44,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:42:44,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:42:44,529 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:42:44,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:42:44,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1074880437, now seen corresponding path program 1 times [2020-10-27 19:42:44,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:42:44,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5446034] [2020-10-27 19:42:44,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:42:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:42:44,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:44,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:42:44,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 19:42:44,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:42:44,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-27 19:42:44,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:42:44,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:42:44,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 19:42:44,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:42:44,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:42:44,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:42:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:42:44,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:44,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:42:44,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:42:44,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:42:44,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 19:42:44,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:42:44,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:42:44,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:42:44,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:42:44,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:42:45,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:42:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:42:45,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:45,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:42:45,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:42:45,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:42:45,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 19:42:45,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:42:45,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:42:45,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 19:42:45,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:42:45,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:42:45,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:42:45,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5446034] [2020-10-27 19:42:45,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:42:45,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:42:45,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659964762] [2020-10-27 19:42:45,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:42:45,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:42:45,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:42:45,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:42:45,097 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 4 states. [2020-10-27 19:42:45,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:42:45,431 INFO L93 Difference]: Finished difference Result 129 states and 193 transitions. [2020-10-27 19:42:45,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 19:42:45,433 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-27 19:42:45,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:42:45,443 INFO L225 Difference]: With dead ends: 129 [2020-10-27 19:42:45,443 INFO L226 Difference]: Without dead ends: 63 [2020-10-27 19:42:45,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:42:45,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-27 19:42:45,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-27 19:42:45,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-27 19:42:45,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 83 transitions. [2020-10-27 19:42:45,496 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 83 transitions. Word has length 17 [2020-10-27 19:42:45,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:42:45,497 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 83 transitions. [2020-10-27 19:42:45,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:42:45,497 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 83 transitions. [2020-10-27 19:42:45,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-27 19:42:45,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:42:45,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:42:45,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:42:45,499 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:42:45,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:42:45,500 INFO L82 PathProgramCache]: Analyzing trace with hash 743539356, now seen corresponding path program 1 times [2020-10-27 19:42:45,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:42:45,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799600051] [2020-10-27 19:42:45,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:42:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 19:42:45,549 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 19:42:45,549 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 19:42:45,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:42:45,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:42:45 BoogieIcfgContainer [2020-10-27 19:42:45,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:42:45,574 INFO L168 Benchmark]: Toolchain (without parser) took 2530.19 ms. Allocated memory is still 161.5 MB. Free memory was 136.8 MB in the beginning and 76.5 MB in the end (delta: 60.3 MB). Peak memory consumption was 60.6 MB. Max. memory is 8.0 GB. [2020-10-27 19:42:45,574 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory is still 84.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:42:45,575 INFO L168 Benchmark]: CACSL2BoogieTranslator took 442.75 ms. Allocated memory is still 161.5 MB. Free memory was 136.1 MB in the beginning and 123.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 19:42:45,576 INFO L168 Benchmark]: Boogie Preprocessor took 59.16 ms. Allocated memory is still 161.5 MB. Free memory was 123.9 MB in the beginning and 121.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:42:45,577 INFO L168 Benchmark]: RCFGBuilder took 865.53 ms. Allocated memory is still 161.5 MB. Free memory was 121.6 MB in the beginning and 92.5 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. [2020-10-27 19:42:45,578 INFO L168 Benchmark]: TraceAbstraction took 1148.85 ms. Allocated memory is still 161.5 MB. Free memory was 92.0 MB in the beginning and 76.5 MB in the end (delta: 15.6 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. [2020-10-27 19:42:45,581 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory is still 84.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 442.75 ms. Allocated memory is still 161.5 MB. Free memory was 136.1 MB in the beginning and 123.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 59.16 ms. Allocated memory is still 161.5 MB. Free memory was 123.9 MB in the beginning and 121.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 865.53 ms. Allocated memory is still 161.5 MB. Free memory was 121.6 MB in the beginning and 92.5 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1148.85 ms. Allocated memory is still 161.5 MB. Free memory was 92.0 MB in the beginning and 76.5 MB in the end (delta: 15.6 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 155, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35, overapproximation of bitwiseAnd at line 34. Possible FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L151] double x = 0.0; [L152] CALL, EXPR __ieee754_sqrt(x) [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L35] return x * x + x; [L152] RET, EXPR __ieee754_sqrt(x) [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == 0.0 && __signbit_double(res) == 0 [L155] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L156] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_0730c.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 84 SDtfs, 8 SDslu, 77 SDs, 0 SdLazy, 82 SolverSat, 8 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 1024 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...