/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_0720.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:26:21,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:26:21,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:26:21,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:26:21,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:26:21,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:26:21,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:26:21,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:26:21,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:26:21,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:26:21,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:26:21,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:26:21,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:26:21,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:26:21,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:26:21,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:26:21,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:26:21,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:26:21,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:26:21,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:26:21,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:26:21,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:26:21,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:26:21,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:26:21,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:26:21,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:26:21,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:26:21,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:26:21,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:26:21,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:26:21,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:26:21,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:26:21,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:26:21,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:26:21,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:26:21,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:26:21,375 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:26:21,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:26:21,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:26:21,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:26:21,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:26:21,385 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 [2020-10-28 14:26:21,472 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:26:21,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:26:21,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:26:21,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:26:21,482 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:26:21,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:26:21,483 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:26:21,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:26:21,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:26:21,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:26:21,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:26:21,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:26:21,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:26:21,489 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:26:21,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:26:21,490 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:26:21,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:26:21,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:26:21,496 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:26:21,496 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:26:21,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:26:21,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:26:21,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:26:21,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:26:21,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:26:21,497 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:26:21,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:26:21,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:26:21,497 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:26:21,497 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:26:21,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:26:21,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:26:21,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:26:21,970 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:26:21,970 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:26:21,972 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0720.c [2020-10-28 14:26:22,050 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d087501d/8a0fc769980540eb804ebe441528bdb5/FLAGcf26f73e9 [2020-10-28 14:26:22,608 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:26:22,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0720.c [2020-10-28 14:26:22,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d087501d/8a0fc769980540eb804ebe441528bdb5/FLAGcf26f73e9 [2020-10-28 14:26:22,965 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d087501d/8a0fc769980540eb804ebe441528bdb5 [2020-10-28 14:26:22,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:26:22,979 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:26:22,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:26:22,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:26:22,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:26:22,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:26:22" (1/1) ... [2020-10-28 14:26:22,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e349ea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:22, skipping insertion in model container [2020-10-28 14:26:23,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:26:22" (1/1) ... [2020-10-28 14:26:23,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:26:23,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:26:23,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:26:23,277 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:26:23,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:26:23,375 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:26:23,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:23 WrapperNode [2020-10-28 14:26:23,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:26:23,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:26:23,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:26:23,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:26:23,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:23" (1/1) ... [2020-10-28 14:26:23,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:23" (1/1) ... [2020-10-28 14:26:23,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:23" (1/1) ... [2020-10-28 14:26:23,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:23" (1/1) ... [2020-10-28 14:26:23,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:23" (1/1) ... [2020-10-28 14:26:23,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:23" (1/1) ... [2020-10-28 14:26:23,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:23" (1/1) ... [2020-10-28 14:26:23,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:26:23,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:26:23,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:26:23,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:26:23,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:23" (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 [2020-10-28 14:26:23,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:26:23,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:26:23,578 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:26:23,578 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-28 14:26:23,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2020-10-28 14:26:23,579 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:26:23,579 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:26:23,579 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:26:23,579 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:26:23,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:26:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-28 14:26:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-28 14:26:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2020-10-28 14:26:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:26:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:26:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:26:23,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:26:23,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:26:23,581 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:26:23,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:26:23,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:26:23,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:26:24,276 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:26:24,276 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-28 14:26:24,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:26:24 BoogieIcfgContainer [2020-10-28 14:26:24,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:26:24,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:26:24,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:26:24,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:26:24,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:26:22" (1/3) ... [2020-10-28 14:26:24,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@248428ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:26:24, skipping insertion in model container [2020-10-28 14:26:24,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:23" (2/3) ... [2020-10-28 14:26:24,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@248428ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:26:24, skipping insertion in model container [2020-10-28 14:26:24,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:26:24" (3/3) ... [2020-10-28 14:26:24,287 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0720.c [2020-10-28 14:26:24,300 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:26:24,304 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:26:24,315 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:26:24,346 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:26:24,346 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:26:24,346 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:26:24,346 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:26:24,346 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:26:24,347 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:26:24,347 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:26:24,347 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:26:24,368 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-10-28 14:26:24,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 14:26:24,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:26:24,376 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] [2020-10-28 14:26:24,377 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:26:24,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:26:24,385 INFO L82 PathProgramCache]: Analyzing trace with hash 219385172, now seen corresponding path program 1 times [2020-10-28 14:26:24,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:26:24,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390396885] [2020-10-28 14:26:24,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:26:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:24,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:24,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:24,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 14:26:24,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:24,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-28 14:26:24,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:24,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:24,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:24,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 14:26:24,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:24,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:26:24,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:26:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:24,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:24,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:24,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:26:24,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:24,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:26:24,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:24,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:24,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:24,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:26:24,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:24,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:26:24,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:26:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:24,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:24,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:24,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:26:24,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:24,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:26:24,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:24,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:24,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:24,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:26:24,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:24,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:26:24,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 14:26:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:24,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:24,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:24,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:26:24,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:24,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:26:24,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:24,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:24,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:24,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:26:24,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:24,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:26:24,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:26:24,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390396885] [2020-10-28 14:26:24,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:26:24,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:26:24,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183661525] [2020-10-28 14:26:24,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:26:24,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:26:24,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:26:24,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:26:24,996 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 4 states. [2020-10-28 14:26:25,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:26:25,397 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2020-10-28 14:26:25,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:26:25,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-28 14:26:25,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:26:25,415 INFO L225 Difference]: With dead ends: 121 [2020-10-28 14:26:25,415 INFO L226 Difference]: Without dead ends: 59 [2020-10-28 14:26:25,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:26:25,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-28 14:26:25,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-28 14:26:25,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-28 14:26:25,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 78 transitions. [2020-10-28 14:26:25,478 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 78 transitions. Word has length 21 [2020-10-28 14:26:25,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:26:25,479 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 78 transitions. [2020-10-28 14:26:25,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:26:25,479 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 78 transitions. [2020-10-28 14:26:25,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 14:26:25,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:26:25,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:26:25,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:26:25,481 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:26:25,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:26:25,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1674382266, now seen corresponding path program 1 times [2020-10-28 14:26:25,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:26:25,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000561300] [2020-10-28 14:26:25,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:26:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:26:25,518 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:26:25,519 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:26:25,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:26:25,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:26:25 BoogieIcfgContainer [2020-10-28 14:26:25,540 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:26:25,542 INFO L168 Benchmark]: Toolchain (without parser) took 2569.09 ms. Allocated memory was 158.3 MB in the beginning and 191.9 MB in the end (delta: 33.6 MB). Free memory was 117.2 MB in the beginning and 124.9 MB in the end (delta: -7.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:25,543 INFO L168 Benchmark]: CDTParser took 0.69 ms. Allocated memory is still 158.3 MB. Free memory is still 133.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:26:25,544 INFO L168 Benchmark]: CACSL2BoogieTranslator took 393.30 ms. Allocated memory is still 158.3 MB. Free memory was 116.6 MB in the beginning and 135.3 MB in the end (delta: -18.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:25,545 INFO L168 Benchmark]: Boogie Preprocessor took 112.39 ms. Allocated memory is still 158.3 MB. Free memory was 135.3 MB in the beginning and 140.6 MB in the end (delta: -5.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:25,546 INFO L168 Benchmark]: RCFGBuilder took 787.21 ms. Allocated memory is still 158.3 MB. Free memory was 140.6 MB in the beginning and 112.8 MB in the end (delta: 27.7 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:25,547 INFO L168 Benchmark]: TraceAbstraction took 1260.16 ms. Allocated memory was 158.3 MB in the beginning and 191.9 MB in the end (delta: 33.6 MB). Free memory was 112.6 MB in the beginning and 124.9 MB in the end (delta: -12.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:25,550 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69 ms. Allocated memory is still 158.3 MB. Free memory is still 133.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 393.30 ms. Allocated memory is still 158.3 MB. Free memory was 116.6 MB in the beginning and 135.3 MB in the end (delta: -18.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 112.39 ms. Allocated memory is still 158.3 MB. Free memory was 135.3 MB in the beginning and 140.6 MB in the end (delta: -5.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 787.21 ms. Allocated memory is still 158.3 MB. Free memory was 140.6 MB in the beginning and 112.8 MB in the end (delta: 27.7 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1260.16 ms. Allocated memory was 158.3 MB in the beginning and 191.9 MB in the end (delta: 33.6 MB). Free memory was 112.6 MB in the beginning and 124.9 MB in the end (delta: -12.3 MB). Peak memory consumption was 22.3 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 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 38, overapproximation of bitwiseAnd at line 37. Possible FailurePath: [L22] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L141] double x = 0.0 / 0.0; [L143] CALL, EXPR __ieee754_sqrt(x) [L25] double z; [L26] __int32_t sign = 0x80000000; [L27] __uint32_t r, t1, s1, ix1, q1; [L28] __int32_t ix0, s0, q, m, t, i; [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (x) [L33] EXPR ew_u.parts.msw [L33] (ix0) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ix1) = ew_u.parts.lsw [L37] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L38] return x * x + x; [L143] RET, EXPR __ieee754_sqrt(x) [L143] double res = __ieee754_sqrt(x); [L146] CALL, EXPR isnan_double(res) [L20] return x != x; [L146] RET, EXPR isnan_double(res) [L146] COND TRUE !isnan_double(res) [L147] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_0720.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 66 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: 80 SDtfs, 10 SDslu, 70 SDs, 0 SdLazy, 76 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred 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, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 1360 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...