/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_1011b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:43:02,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:43:02,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:43:02,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:43:02,490 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:43:02,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:43:02,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:43:02,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:43:02,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:43:02,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:43:02,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:43:02,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:43:02,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:43:02,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:43:02,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:43:02,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:43:02,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:43:02,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:43:02,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:43:02,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:43:02,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:43:02,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:43:02,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:43:02,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:43:02,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:43:02,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:43:02,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:43:02,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:43:02,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:43:02,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:43:02,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:43:02,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:43:02,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:43:02,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:43:02,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:43:02,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:43:02,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:43:02,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:43:02,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:43:02,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:43:02,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:43:02,586 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 [2020-10-27 19:43:02,613 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:43:02,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:43:02,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:43:02,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:43:02,616 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:43:02,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:43:02,616 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:43:02,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:43:02,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:43:02,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:43:02,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:43:02,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:43:02,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:43:02,617 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:43:02,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:43:02,618 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:43:02,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:43:02,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:43:02,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:43:02,619 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:43:02,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:43:02,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:43:02,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:43:02,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:43:02,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:43:02,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:43:02,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:43:02,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:43:02,620 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:43:02,621 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:43:02,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:43:03,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:43:03,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:43:03,057 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:43:03,058 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:43:03,063 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1011b.c [2020-10-27 19:43:03,153 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7457345d/4c20393dec884b2482c4d8cdd680e02e/FLAG8856a95f1 [2020-10-27 19:43:03,819 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:43:03,820 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1011b.c [2020-10-27 19:43:03,828 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7457345d/4c20393dec884b2482c4d8cdd680e02e/FLAG8856a95f1 [2020-10-27 19:43:04,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7457345d/4c20393dec884b2482c4d8cdd680e02e [2020-10-27 19:43:04,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:43:04,211 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:43:04,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:43:04,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:43:04,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:43:04,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:43:04" (1/1) ... [2020-10-27 19:43:04,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@202d529b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:04, skipping insertion in model container [2020-10-27 19:43:04,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:43:04" (1/1) ... [2020-10-27 19:43:04,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:43:04,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:43:04,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:43:04,526 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:43:04,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:43:04,567 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:43:04,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:04 WrapperNode [2020-10-27 19:43:04,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:43:04,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:43:04,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:43:04,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:43:04,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:04" (1/1) ... [2020-10-27 19:43:04,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:04" (1/1) ... [2020-10-27 19:43:04,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:04" (1/1) ... [2020-10-27 19:43:04,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:04" (1/1) ... [2020-10-27 19:43:04,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:04" (1/1) ... [2020-10-27 19:43:04,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:04" (1/1) ... [2020-10-27 19:43:04,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:04" (1/1) ... [2020-10-27 19:43:04,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:43:04,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:43:04,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:43:04,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:43:04,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:04" (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 19:43:04,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:43:04,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:43:04,747 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:43:04,747 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-27 19:43:04,747 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-27 19:43:04,748 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:43:04,748 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:43:04,748 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:43:04,748 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:43:04,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:43:04,748 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-27 19:43:04,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 19:43:04,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:43:04,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:43:04,749 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-27 19:43:04,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:43:04,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 19:43:04,749 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:43:04,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:43:04,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:43:04,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:43:05,099 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:43:05,099 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-27 19:43:05,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:43:05 BoogieIcfgContainer [2020-10-27 19:43:05,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:43:05,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:43:05,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:43:05,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:43:05,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:43:04" (1/3) ... [2020-10-27 19:43:05,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72252098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:43:05, skipping insertion in model container [2020-10-27 19:43:05,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:04" (2/3) ... [2020-10-27 19:43:05,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72252098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:43:05, skipping insertion in model container [2020-10-27 19:43:05,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:43:05" (3/3) ... [2020-10-27 19:43:05,112 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1011b.c [2020-10-27 19:43:05,125 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:43:05,130 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:43:05,155 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:43:05,216 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:43:05,217 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:43:05,217 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:43:05,217 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:43:05,217 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:43:05,217 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:43:05,217 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:43:05,218 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:43:05,237 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-27 19:43:05,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-27 19:43:05,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:43:05,245 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 19:43:05,245 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:43:05,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:43:05,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1620995038, now seen corresponding path program 1 times [2020-10-27 19:43:05,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:43:05,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003720986] [2020-10-27 19:43:05,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:43:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:43:05,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:05,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:05,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:43:05,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 19:43:05,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:43:05,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-27 19:43:05,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:43:05,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:43:05,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 19:43:05,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:43:05,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:43:05,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:43:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:43:05,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:05,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:43:05,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:43:05,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:43:05,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 19:43:05,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:43:05,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:43:05,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:43:05,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:43:05,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:43:05,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:43:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:43:05,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:05,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:05,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:43:05,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 19:43:05,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:43:05,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 19:43:05,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:43:05,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:43:05,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 19:43:05,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:43:05,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:43:05,890 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 19:43:05,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003720986] [2020-10-27 19:43:05,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:43:05,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:43:05,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716839675] [2020-10-27 19:43:05,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:43:05,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:43:05,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:43:05,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:43:05,921 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2020-10-27 19:43:06,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:43:06,090 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-10-27 19:43:06,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 19:43:06,092 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-27 19:43:06,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:43:06,101 INFO L225 Difference]: With dead ends: 61 [2020-10-27 19:43:06,101 INFO L226 Difference]: Without dead ends: 29 [2020-10-27 19:43:06,105 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 19:43:06,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-27 19:43:06,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-27 19:43:06,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 19:43:06,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-10-27 19:43:06,156 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 18 [2020-10-27 19:43:06,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:43:06,156 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-10-27 19:43:06,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:43:06,156 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-10-27 19:43:06,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 19:43:06,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:43:06,158 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] [2020-10-27 19:43:06,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:43:06,158 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:43:06,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:43:06,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1641968991, now seen corresponding path program 1 times [2020-10-27 19:43:06,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:43:06,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096552372] [2020-10-27 19:43:06,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:43:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 19:43:06,201 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 19:43:06,201 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 19:43:06,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:43:06,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:43:06 BoogieIcfgContainer [2020-10-27 19:43:06,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:43:06,225 INFO L168 Benchmark]: Toolchain (without parser) took 2019.81 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 139.9 MB in the beginning and 147.7 MB in the end (delta: -7.8 MB). Peak memory consumption was 24.6 MB. Max. memory is 8.0 GB. [2020-10-27 19:43:06,226 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 158.3 MB. Free memory was 129.8 MB in the beginning and 129.7 MB in the end (delta: 76.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:43:06,227 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.17 ms. Allocated memory is still 158.3 MB. Free memory was 139.2 MB in the beginning and 129.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 19:43:06,229 INFO L168 Benchmark]: Boogie Preprocessor took 101.96 ms. Allocated memory is still 158.3 MB. Free memory was 129.4 MB in the beginning and 141.5 MB in the end (delta: -12.1 MB). Peak memory consumption was 1.6 MB. Max. memory is 8.0 GB. [2020-10-27 19:43:06,230 INFO L168 Benchmark]: RCFGBuilder took 429.73 ms. Allocated memory is still 158.3 MB. Free memory was 141.3 MB in the beginning and 124.0 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-10-27 19:43:06,231 INFO L168 Benchmark]: TraceAbstraction took 1119.13 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 123.6 MB in the beginning and 147.7 MB in the end (delta: -24.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 19:43:06,235 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 158.3 MB. Free memory was 129.8 MB in the beginning and 129.7 MB in the end (delta: 76.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 353.17 ms. Allocated memory is still 158.3 MB. Free memory was 139.2 MB in the beginning and 129.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 101.96 ms. Allocated memory is still 158.3 MB. Free memory was 129.4 MB in the beginning and 141.5 MB in the end (delta: -12.1 MB). Peak memory consumption was 1.6 MB. Max. memory is 8.0 GB. * RCFGBuilder took 429.73 ms. Allocated memory is still 158.3 MB. Free memory was 141.3 MB in the beginning and 124.0 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1119.13 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 123.6 MB in the beginning and 147.7 MB in the end (delta: -24.1 MB). Peak memory consumption was 9.4 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 53, overapproximation of someUnaryDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 37. Possible FailurePath: [L49] double x = -0.0; [L50] CALL, EXPR fabs_double(x) [L28] __uint32_t high; [L30] ieee_double_shape_type gh_u; [L31] gh_u.value = (x) [L32] EXPR gh_u.parts.msw [L32] (high) = gh_u.parts.msw [L35] ieee_double_shape_type sh_u; [L36] sh_u.value = (x) [L37] sh_u.parts.msw = (high & 0x7fffffff) [L38] EXPR sh_u.value [L38] (x) = sh_u.value [L40] return x; [L50] RET, EXPR fabs_double(x) [L50] double res = fabs_double(x); [L53] EXPR res == 0.0 && __signbit_double(res) == 0 [L53] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L54] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1011b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 8 SDslu, 23 SDs, 0 SdLazy, 28 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s 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=36occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 1003 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...