/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=SHALLOWEST --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_1052c.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:02:18,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:02:18,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:02:18,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:02:18,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:02:18,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:02:18,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:02:18,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:02:18,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:02:18,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:02:18,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:02:18,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:02:18,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:02:18,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:02:18,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:02:18,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:02:18,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:02:18,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:02:18,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:02:18,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:02:18,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:02:18,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:02:18,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:02:18,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:02:18,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:02:18,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:02:18,279 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:02:18,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:02:18,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:02:18,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:02:18,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:02:18,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:02:18,286 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:02:18,287 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:02:18,288 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:02:18,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:02:18,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:02:18,290 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:02:18,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:02:18,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:02:18,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:02:18,294 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 01:02:18,344 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:02:18,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:02:18,349 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:02:18,349 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:02:18,350 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:02:18,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:02:18,350 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:02:18,350 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:02:18,351 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:02:18,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:02:18,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:02:18,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:02:18,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:02:18,353 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:02:18,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:02:18,353 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:02:18,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:02:18,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:02:18,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:02:18,354 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:02:18,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:02:18,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:02:18,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:02:18,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:02:18,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:02:18,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:02:18,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:02:18,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:02:18,356 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:02:18,356 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:02:18,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:02:18,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:02:18,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:02:18,803 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:02:18,803 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:02:18,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-10-27 01:02:18,879 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc2bfadc9/703981921f62498b8e7296d1068f73a7/FLAG7e48bbe90 [2020-10-27 01:02:19,577 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:02:19,578 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-10-27 01:02:19,587 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc2bfadc9/703981921f62498b8e7296d1068f73a7/FLAG7e48bbe90 [2020-10-27 01:02:19,896 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc2bfadc9/703981921f62498b8e7296d1068f73a7 [2020-10-27 01:02:19,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:02:19,910 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:02:19,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:02:19,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:02:19,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:02:19,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:02:19" (1/1) ... [2020-10-27 01:02:19,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c4b6276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:19, skipping insertion in model container [2020-10-27 01:02:19,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:02:19" (1/1) ... [2020-10-27 01:02:19,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:02:19,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:02:20,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:02:20,206 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:02:20,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:02:20,316 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:02:20,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:20 WrapperNode [2020-10-27 01:02:20,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:02:20,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:02:20,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:02:20,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:02:20,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:20" (1/1) ... [2020-10-27 01:02:20,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:20" (1/1) ... [2020-10-27 01:02:20,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:20" (1/1) ... [2020-10-27 01:02:20,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:20" (1/1) ... [2020-10-27 01:02:20,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:20" (1/1) ... [2020-10-27 01:02:20,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:20" (1/1) ... [2020-10-27 01:02:20,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:20" (1/1) ... [2020-10-27 01:02:20,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:02:20,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:02:20,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:02:20,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:02:20,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:20" (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 01:02:20,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:02:20,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:02:20,547 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:02:20,548 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-10-27 01:02:20,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-27 01:02:20,549 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:02:20,549 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:02:20,549 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:02:20,550 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:02:20,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:02:20,551 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-10-27 01:02:20,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:02:20,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:02:20,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:02:20,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:02:20,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:02:20,554 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-27 01:02:20,554 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:02:20,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:02:20,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:02:20,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:02:21,296 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:02:21,297 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-27 01:02:21,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:02:21 BoogieIcfgContainer [2020-10-27 01:02:21,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:02:21,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:02:21,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:02:21,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:02:21,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:02:19" (1/3) ... [2020-10-27 01:02:21,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1527d44c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:02:21, skipping insertion in model container [2020-10-27 01:02:21,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:20" (2/3) ... [2020-10-27 01:02:21,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1527d44c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:02:21, skipping insertion in model container [2020-10-27 01:02:21,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:02:21" (3/3) ... [2020-10-27 01:02:21,311 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-10-27 01:02:21,324 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:02:21,329 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:02:21,343 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:02:21,389 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:02:21,390 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:02:21,390 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:02:21,390 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:02:21,390 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:02:21,390 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:02:21,390 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:02:21,391 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:02:21,413 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-10-27 01:02:21,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 01:02:21,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:02:21,422 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 01:02:21,422 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:02:21,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:02:21,429 INFO L82 PathProgramCache]: Analyzing trace with hash 387147781, now seen corresponding path program 1 times [2020-10-27 01:02:21,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:02:21,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204731359] [2020-10-27 01:02:21,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:02:21,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:02:21,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:02:21,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:02:21,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 01:02:21,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:02:21,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-27 01:02:21,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:02:21,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:02:21,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 01:02:21,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:02:21,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 01:02:21,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:02:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:02:21,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:02:21,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:02:21,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:02:21,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:02:21,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 01:02:21,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:02:21,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:02:21,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:02:21,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:02:21,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:02:21,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:02:21,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:02:21,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:02:21,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:02:21,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:02:21,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:02:21,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:02:21,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:02:21,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:02:21,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:02:21,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:02:21,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:02:21,944 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 01:02:21,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204731359] [2020-10-27 01:02:21,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:02:21,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:02:21,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488408798] [2020-10-27 01:02:21,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:02:21,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:02:21,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:02:21,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:02:21,982 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 4 states. [2020-10-27 01:02:22,140 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-10-27 01:02:22,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:02:22,438 INFO L93 Difference]: Finished difference Result 99 states and 145 transitions. [2020-10-27 01:02:22,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:02:22,440 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-27 01:02:22,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:02:22,450 INFO L225 Difference]: With dead ends: 99 [2020-10-27 01:02:22,451 INFO L226 Difference]: Without dead ends: 48 [2020-10-27 01:02:22,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:02:22,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-27 01:02:22,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-27 01:02:22,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-27 01:02:22,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 63 transitions. [2020-10-27 01:02:22,504 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 63 transitions. Word has length 20 [2020-10-27 01:02:22,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:02:22,504 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 63 transitions. [2020-10-27 01:02:22,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:02:22,505 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 63 transitions. [2020-10-27 01:02:22,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 01:02:22,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:02:22,506 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] [2020-10-27 01:02:22,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:02:22,507 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:02:22,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:02:22,508 INFO L82 PathProgramCache]: Analyzing trace with hash -496280214, now seen corresponding path program 1 times [2020-10-27 01:02:22,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:02:22,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403404697] [2020-10-27 01:02:22,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:02:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:02:22,558 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:02:22,558 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:02:22,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:02:22,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:02:22 BoogieIcfgContainer [2020-10-27 01:02:22,581 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:02:22,583 INFO L168 Benchmark]: Toolchain (without parser) took 2678.47 ms. Allocated memory is still 158.3 MB. Free memory was 133.7 MB in the beginning and 69.0 MB in the end (delta: 64.7 MB). Peak memory consumption was 65.8 MB. Max. memory is 8.0 GB. [2020-10-27 01:02:22,584 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 158.3 MB. Free memory was 130.6 MB in the beginning and 130.4 MB in the end (delta: 117.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:02:22,585 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.65 ms. Allocated memory is still 158.3 MB. Free memory was 133.1 MB in the beginning and 122.0 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:02:22,586 INFO L168 Benchmark]: Boogie Preprocessor took 113.62 ms. Allocated memory is still 158.3 MB. Free memory was 122.0 MB in the beginning and 120.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:02:22,587 INFO L168 Benchmark]: RCFGBuilder took 864.21 ms. Allocated memory is still 158.3 MB. Free memory was 119.9 MB in the beginning and 131.4 MB in the end (delta: -11.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:02:22,588 INFO L168 Benchmark]: TraceAbstraction took 1279.44 ms. Allocated memory is still 158.3 MB. Free memory was 130.9 MB in the beginning and 69.0 MB in the end (delta: 61.9 MB). Peak memory consumption was 61.9 MB. Max. memory is 8.0 GB. [2020-10-27 01:02:22,592 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 158.3 MB. Free memory was 130.6 MB in the beginning and 130.4 MB in the end (delta: 117.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 403.65 ms. Allocated memory is still 158.3 MB. Free memory was 133.1 MB in the beginning and 122.0 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 113.62 ms. Allocated memory is still 158.3 MB. Free memory was 122.0 MB in the beginning and 120.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 864.21 ms. Allocated memory is still 158.3 MB. Free memory was 119.9 MB in the beginning and 131.4 MB in the end (delta: -11.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1279.44 ms. Allocated memory is still 158.3 MB. Free memory was 130.9 MB in the beginning and 69.0 MB in the end (delta: 61.9 MB). Peak memory consumption was 61.9 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 39, overapproximation of bitwiseOr at line 40, overapproximation of someUnaryDOUBLEoperation at line 100, overapproximation of bitwiseAnd at line 27, overapproximation of someBinaryDOUBLEComparisonOperation at line 104. Possible FailurePath: [L16] static const double huge_floor = 1.0e300; [L100] double x = -0.0; [L101] CALL, EXPR floor_double(x) [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L28] COND TRUE j0 < 20 [L29] COND FALSE !(j0 < 0) [L39] i = (0x000fffff) >> j0 [L40] COND TRUE ((i0 & i) | i1) == 0 [L41] return x; [L101] RET, EXPR floor_double(x) [L101] double res = floor_double(x); [L104] EXPR res == -0.0 && __signbit_double(res) == 1 [L104] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L105] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1052c.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 64 SDtfs, 8 SDslu, 57 SDs, 0 SdLazy, 62 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, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred 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, 1216 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...