/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/floats-cbmc-regression/float6.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:09:21,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:09:21,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:09:21,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:09:21,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:09:21,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:09:21,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:09:21,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:09:21,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:09:21,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:09:21,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:09:21,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:09:21,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:09:21,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:09:21,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:09:21,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:09:21,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:09:21,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:09:21,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:09:21,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:09:21,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:09:21,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:09:21,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:09:21,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:09:21,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:09:21,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:09:21,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:09:21,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:09:21,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:09:21,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:09:21,977 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:09:21,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:09:21,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:09:21,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:09:21,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:09:21,982 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:09:21,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:09:21,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:09:21,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:09:21,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:09:21,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:09:21,987 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 09:09:22,025 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:09:22,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:09:22,027 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:09:22,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:09:22,027 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:09:22,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:09:22,028 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:09:22,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:09:22,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:09:22,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:09:22,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:09:22,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:09:22,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:09:22,029 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:09:22,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:09:22,029 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:09:22,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:09:22,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:09:22,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:09:22,030 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:09:22,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:09:22,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:09:22,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:09:22,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:09:22,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:09:22,032 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:09:22,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:09:22,032 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:09:22,032 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:09:22,033 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:09:22,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:09:22,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:09:22,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:09:22,507 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:09:22,507 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:09:22,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float6.c [2020-10-29 09:09:22,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac649ccaa/39e373c6259c465f8203f73a1e3b25c4/FLAG41077b880 [2020-10-29 09:09:23,326 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:09:23,326 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/floats-cbmc-regression/float6.c [2020-10-29 09:09:23,335 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac649ccaa/39e373c6259c465f8203f73a1e3b25c4/FLAG41077b880 [2020-10-29 09:09:23,660 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac649ccaa/39e373c6259c465f8203f73a1e3b25c4 [2020-10-29 09:09:23,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:09:23,670 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:09:23,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:09:23,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:09:23,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:09:23,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:09:23" (1/1) ... [2020-10-29 09:09:23,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@492117aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:23, skipping insertion in model container [2020-10-29 09:09:23,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:09:23" (1/1) ... [2020-10-29 09:09:23,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:09:23,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:09:23,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:09:23,900 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:09:23,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:09:23,960 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:09:23,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:23 WrapperNode [2020-10-29 09:09:23,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:09:23,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:09:23,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:09:23,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:09:23,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:23" (1/1) ... [2020-10-29 09:09:23,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:23" (1/1) ... [2020-10-29 09:09:23,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:23" (1/1) ... [2020-10-29 09:09:23,986 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:23" (1/1) ... [2020-10-29 09:09:23,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:23" (1/1) ... [2020-10-29 09:09:24,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:23" (1/1) ... [2020-10-29 09:09:24,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:23" (1/1) ... [2020-10-29 09:09:24,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:09:24,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:09:24,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:09:24,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:09:24,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:23" (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 [2020-10-29 09:09:24,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:09:24,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:09:24,085 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:09:24,085 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:09:24,085 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:09:24,086 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:09:24,086 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:09:24,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:09:24,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-29 09:09:24,086 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:09:24,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:09:24,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:09:24,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:09:24,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:09:24,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:09:24,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:09:24,508 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:09:24,509 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 09:09:24,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:09:24 BoogieIcfgContainer [2020-10-29 09:09:24,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:09:24,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:09:24,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:09:24,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:09:24,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:09:23" (1/3) ... [2020-10-29 09:09:24,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c70f96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:09:24, skipping insertion in model container [2020-10-29 09:09:24,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:23" (2/3) ... [2020-10-29 09:09:24,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c70f96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:09:24, skipping insertion in model container [2020-10-29 09:09:24,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:09:24" (3/3) ... [2020-10-29 09:09:24,524 INFO L111 eAbstractionObserver]: Analyzing ICFG float6.c [2020-10-29 09:09:24,549 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:09:24,562 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:09:24,590 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:09:24,663 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:09:24,663 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:09:24,664 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:09:24,664 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:09:24,664 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:09:24,664 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:09:24,664 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:09:24,664 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:09:24,699 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-10-29 09:09:24,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-29 09:09:24,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:09:24,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:09:24,705 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:09:24,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:09:24,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1501220571, now seen corresponding path program 1 times [2020-10-29 09:09:24,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:09:24,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142943643] [2020-10-29 09:09:24,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:09:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:09:24,859 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:09:24,860 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:09:24,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:09:24,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:09:24 BoogieIcfgContainer [2020-10-29 09:09:24,882 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:09:24,885 INFO L168 Benchmark]: Toolchain (without parser) took 1218.25 ms. Allocated memory was 125.8 MB in the beginning and 165.7 MB in the end (delta: 39.8 MB). Free memory was 101.7 MB in the beginning and 127.1 MB in the end (delta: -25.4 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:24,886 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory is still 86.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:09:24,887 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.06 ms. Allocated memory is still 125.8 MB. Free memory was 101.1 MB in the beginning and 90.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:24,888 INFO L168 Benchmark]: Boogie Preprocessor took 44.55 ms. Allocated memory is still 125.8 MB. Free memory was 90.6 MB in the beginning and 88.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:24,889 INFO L168 Benchmark]: RCFGBuilder took 504.96 ms. Allocated memory was 125.8 MB in the beginning and 165.7 MB in the end (delta: 39.8 MB). Free memory was 88.8 MB in the beginning and 138.7 MB in the end (delta: -49.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:24,890 INFO L168 Benchmark]: TraceAbstraction took 367.63 ms. Allocated memory is still 165.7 MB. Free memory was 138.7 MB in the beginning and 127.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:24,894 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory is still 86.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 289.06 ms. Allocated memory is still 125.8 MB. Free memory was 101.1 MB in the beginning and 90.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.55 ms. Allocated memory is still 125.8 MB. Free memory was 90.6 MB in the beginning and 88.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 504.96 ms. Allocated memory was 125.8 MB in the beginning and 165.7 MB in the end (delta: 39.8 MB). Free memory was 88.8 MB in the beginning and 138.7 MB in the end (delta: -49.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 367.63 ms. Allocated memory is still 165.7 MB. Free memory was 138.7 MB in the beginning and 127.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 9. Possible FailurePath: [L9] COND TRUE !(1.0!=2.0) [L9] CALL reach_error() [L4] __assert_fail("0", "float6.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 123 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=123occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...