/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_1032b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:07:10,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:07:10,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:07:10,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:07:10,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:07:10,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:07:10,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:07:10,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:07:10,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:07:10,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:07:10,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:07:10,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:07:10,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:07:10,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:07:10,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:07:10,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:07:10,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:07:10,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:07:10,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:07:10,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:07:10,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:07:10,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:07:10,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:07:10,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:07:10,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:07:10,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:07:10,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:07:10,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:07:10,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:07:10,573 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:07:10,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:07:10,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:07:10,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:07:10,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:07:10,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:07:10,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:07:10,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:07:10,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:07:10,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:07:10,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:07:10,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:07:10,586 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 [2020-10-29 09:07:10,617 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:07:10,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:07:10,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:07:10,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:07:10,620 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:07:10,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:07:10,620 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:07:10,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:07:10,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:07:10,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:07:10,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:07:10,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:07:10,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:07:10,622 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:07:10,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:07:10,622 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:07:10,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:07:10,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:07:10,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:07:10,634 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:07:10,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:07:10,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:07:10,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:07:10,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:07:10,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:07:10,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:07:10,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:07:10,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:07:10,640 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:07:10,640 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:07:11,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:07:11,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:07:11,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:07:11,102 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:07:11,103 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:07:11,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032b.c [2020-10-29 09:07:11,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d54ae0ac/0bd7cf77bfaf476bb8661f4d9335db4d/FLAGedc7c324d [2020-10-29 09:07:11,857 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:07:11,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1032b.c [2020-10-29 09:07:11,871 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d54ae0ac/0bd7cf77bfaf476bb8661f4d9335db4d/FLAGedc7c324d [2020-10-29 09:07:12,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d54ae0ac/0bd7cf77bfaf476bb8661f4d9335db4d [2020-10-29 09:07:12,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:07:12,240 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:07:12,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:07:12,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:07:12,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:07:12,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:07:12" (1/1) ... [2020-10-29 09:07:12,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@388af41f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:12, skipping insertion in model container [2020-10-29 09:07:12,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:07:12" (1/1) ... [2020-10-29 09:07:12,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:07:12,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:07:12,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:07:12,485 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:07:12,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:07:12,533 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:07:12,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:12 WrapperNode [2020-10-29 09:07:12,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:07:12,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:07:12,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:07:12,535 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:07:12,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:12" (1/1) ... [2020-10-29 09:07:12,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:12" (1/1) ... [2020-10-29 09:07:12,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:12" (1/1) ... [2020-10-29 09:07:12,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:12" (1/1) ... [2020-10-29 09:07:12,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:12" (1/1) ... [2020-10-29 09:07:12,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:12" (1/1) ... [2020-10-29 09:07:12,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:12" (1/1) ... [2020-10-29 09:07:12,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:07:12,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:07:12,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:07:12,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:07:12,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:12" (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 [2020-10-29 09:07:12,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:07:12,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:07:12,652 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:07:12,652 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-29 09:07:12,652 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2020-10-29 09:07:12,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-29 09:07:12,653 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:07:12,653 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:07:12,653 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:07:12,653 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:07:12,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:07:12,653 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-29 09:07:12,653 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2020-10-29 09:07:12,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-29 09:07:12,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:07:12,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:07:12,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:07:12,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-29 09:07:12,654 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-29 09:07:12,654 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:07:12,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:07:12,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:07:12,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:07:13,399 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:07:13,399 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-29 09:07:13,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:07:13 BoogieIcfgContainer [2020-10-29 09:07:13,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:07:13,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:07:13,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:07:13,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:07:13,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:07:12" (1/3) ... [2020-10-29 09:07:13,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@84af44a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:07:13, skipping insertion in model container [2020-10-29 09:07:13,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:12" (2/3) ... [2020-10-29 09:07:13,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@84af44a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:07:13, skipping insertion in model container [2020-10-29 09:07:13,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:07:13" (3/3) ... [2020-10-29 09:07:13,417 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032b.c [2020-10-29 09:07:13,431 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:07:13,436 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:07:13,453 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:07:13,500 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:07:13,501 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:07:13,501 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:07:13,501 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:07:13,501 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:07:13,501 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:07:13,501 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:07:13,502 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:07:13,521 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-10-29 09:07:13,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 09:07:13,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:13,529 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] [2020-10-29 09:07:13,529 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:13,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:13,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1319604067, now seen corresponding path program 1 times [2020-10-29 09:07:13,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:13,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411069218] [2020-10-29 09:07:13,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:13,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:13,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:13,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 09:07:13,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:13,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 09:07:13,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:13,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:13,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:13,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 09:07:13,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:13,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 09:07:13,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:07:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:13,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:13,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:13,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:13,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:13,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 09:07:13,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:13,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:13,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:13,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:13,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:13,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:07:13,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:07:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:13,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:14,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:14,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 09:07:14,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:14,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 09:07:14,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:14,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:14,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:14,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 09:07:14,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:14,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:07:14,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:07:14,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411069218] [2020-10-29 09:07:14,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:07:14,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:07:14,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752193416] [2020-10-29 09:07:14,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:07:14,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:07:14,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:07:14,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:07:14,044 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-10-29 09:07:14,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:07:14,261 INFO L93 Difference]: Finished difference Result 83 states and 115 transitions. [2020-10-29 09:07:14,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:07:14,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-29 09:07:14,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:07:14,273 INFO L225 Difference]: With dead ends: 83 [2020-10-29 09:07:14,273 INFO L226 Difference]: Without dead ends: 40 [2020-10-29 09:07:14,277 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 [2020-10-29 09:07:14,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-29 09:07:14,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-29 09:07:14,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-29 09:07:14,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-10-29 09:07:14,328 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 20 [2020-10-29 09:07:14,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:07:14,329 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-10-29 09:07:14,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:07:14,329 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-10-29 09:07:14,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 09:07:14,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:14,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:07:14,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:07:14,331 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:14,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:14,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1838433378, now seen corresponding path program 1 times [2020-10-29 09:07:14,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:14,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824686275] [2020-10-29 09:07:14,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:07:14,379 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:07:14,379 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:07:14,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:07:14,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:07:14 BoogieIcfgContainer [2020-10-29 09:07:14,404 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:07:14,406 INFO L168 Benchmark]: Toolchain (without parser) took 2171.03 ms. Allocated memory is still 152.0 MB. Free memory was 126.2 MB in the beginning and 74.2 MB in the end (delta: 51.9 MB). Peak memory consumption was 53.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:14,407 INFO L168 Benchmark]: CDTParser took 1.72 ms. Allocated memory is still 152.0 MB. Free memory is still 128.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:07:14,408 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.51 ms. Allocated memory is still 152.0 MB. Free memory was 125.6 MB in the beginning and 114.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:14,409 INFO L168 Benchmark]: Boogie Preprocessor took 44.39 ms. Allocated memory is still 152.0 MB. Free memory was 114.9 MB in the beginning and 113.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:14,410 INFO L168 Benchmark]: RCFGBuilder took 822.70 ms. Allocated memory is still 152.0 MB. Free memory was 113.0 MB in the beginning and 130.9 MB in the end (delta: -17.9 MB). Peak memory consumption was 22.7 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:14,411 INFO L168 Benchmark]: TraceAbstraction took 996.57 ms. Allocated memory is still 152.0 MB. Free memory was 130.3 MB in the beginning and 74.2 MB in the end (delta: 56.1 MB). Peak memory consumption was 56.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:14,414 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.72 ms. Allocated memory is still 152.0 MB. Free memory is still 128.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 289.51 ms. Allocated memory is still 152.0 MB. Free memory was 125.6 MB in the beginning and 114.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.39 ms. Allocated memory is still 152.0 MB. Free memory was 114.9 MB in the beginning and 113.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 822.70 ms. Allocated memory is still 152.0 MB. Free memory was 113.0 MB in the beginning and 130.9 MB in the end (delta: -17.9 MB). Peak memory consumption was 22.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 996.57 ms. Allocated memory is still 152.0 MB. Free memory was 130.3 MB in the beginning and 74.2 MB in the end (delta: 56.1 MB). Peak memory consumption was 56.6 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 shiftRight at line 36, overapproximation of someUnaryDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 37, overapproximation of someBinaryDOUBLEComparisonOperation at line 92. Possible FailurePath: [L88] double x = -0.0; [L89] CALL, EXPR round_double(x) [L20] __int32_t msw, exponent_less_1023; [L21] __uint32_t lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L29] COND TRUE exponent_less_1023 < 20 [L30] COND FALSE !(exponent_less_1023 < 0) [L36] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; [L37] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L38] return x; [L89] RET, EXPR round_double(x) [L89] double res = round_double(x); [L92] EXPR res == -0.0 && __signbit_double(res) == 1 [L92] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L93] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1032b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 8 SDslu, 42 SDs, 0 SdLazy, 47 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=47occurred 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, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 1159 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...