/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/float_req_bl_1032b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:28:29,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:28:29,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:28:29,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:28:29,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:28:29,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:28:29,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:28:29,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:28:29,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:28:29,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:28:29,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:28:29,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:28:29,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:28:29,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:28:29,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:28:29,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:28:29,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:28:29,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:28:29,938 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:28:29,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:28:29,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:28:29,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:28:29,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:28:29,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:28:29,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:28:29,958 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:28:29,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:28:29,960 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:28:29,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:28:29,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:28:29,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:28:29,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:28:29,964 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:28:29,965 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:28:29,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:28:29,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:28:29,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:28:29,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:28:29,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:28:29,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:28:29,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:28:29,971 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 14:28:30,031 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:28:30,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:28:30,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:28:30,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:28:30,036 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:28:30,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:28:30,037 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:28:30,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:28:30,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:28:30,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:28:30,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:28:30,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:28:30,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:28:30,039 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:28:30,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:28:30,040 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:28:30,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:28:30,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:28:30,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:28:30,041 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:28:30,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:28:30,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:28:30,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:28:30,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:28:30,042 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:28:30,042 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:28:30,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:28:30,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:28:30,042 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:28:30,042 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:28:30,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:28:30,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:28:30,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:28:30,445 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:28:30,446 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:28:30,447 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1032b.c [2020-10-28 14:28:30,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64820f409/3f1cb485696a4de0b652abe11bb93a7b/FLAG847aa6e96 [2020-10-28 14:28:31,067 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:28:31,068 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1032b.c [2020-10-28 14:28:31,077 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64820f409/3f1cb485696a4de0b652abe11bb93a7b/FLAG847aa6e96 [2020-10-28 14:28:31,450 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64820f409/3f1cb485696a4de0b652abe11bb93a7b [2020-10-28 14:28:31,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:28:31,464 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:28:31,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:28:31,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:28:31,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:28:31,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:28:31" (1/1) ... [2020-10-28 14:28:31,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@151fa72f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:31, skipping insertion in model container [2020-10-28 14:28:31,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:28:31" (1/1) ... [2020-10-28 14:28:31,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:28:31,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:28:31,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:28:31,762 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:28:31,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:28:31,810 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:28:31,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:31 WrapperNode [2020-10-28 14:28:31,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:28:31,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:28:31,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:28:31,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:28:31,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:31" (1/1) ... [2020-10-28 14:28:31,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:31" (1/1) ... [2020-10-28 14:28:31,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:31" (1/1) ... [2020-10-28 14:28:31,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:31" (1/1) ... [2020-10-28 14:28:31,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:31" (1/1) ... [2020-10-28 14:28:31,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:31" (1/1) ... [2020-10-28 14:28:31,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:31" (1/1) ... [2020-10-28 14:28:31,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:28:31,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:28:31,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:28:31,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:28:31,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:31" (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 14:28:31,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:28:31,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:28:31,978 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:28:31,978 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2020-10-28 14:28:31,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-28 14:28:31,979 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:28:31,979 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:28:31,979 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:28:31,979 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:28:31,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:28:31,980 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-28 14:28:31,981 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2020-10-28 14:28:31,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:28:31,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:28:31,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:28:31,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:28:31,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:28:31,982 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-28 14:28:31,983 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:28:31,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:28:31,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:28:31,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:28:32,505 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:28:32,505 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-28 14:28:32,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:28:32 BoogieIcfgContainer [2020-10-28 14:28:32,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:28:32,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:28:32,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:28:32,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:28:32,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:28:31" (1/3) ... [2020-10-28 14:28:32,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d08ba04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:28:32, skipping insertion in model container [2020-10-28 14:28:32,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:31" (2/3) ... [2020-10-28 14:28:32,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d08ba04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:28:32, skipping insertion in model container [2020-10-28 14:28:32,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:28:32" (3/3) ... [2020-10-28 14:28:32,516 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032b.c [2020-10-28 14:28:32,528 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:28:32,533 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:28:32,546 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:28:32,622 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:28:32,623 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:28:32,623 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:28:32,623 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:28:32,624 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:28:32,624 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:28:32,624 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:28:32,624 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:28:32,647 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-10-28 14:28:32,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 14:28:32,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:28:32,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:28:32,654 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:28:32,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:28:32,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1942105878, now seen corresponding path program 1 times [2020-10-28 14:28:32,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:28:32,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829503395] [2020-10-28 14:28:32,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:28:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:32,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:32,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:32,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:28:32,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:28:32,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-28 14:28:32,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:32,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:32,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:32,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 14:28:32,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:32,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:28:33,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:28:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:33,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:33,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:33,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:28:33,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:28:33,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 14:28:33,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:33,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:33,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:33,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:28:33,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:33,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:28:33,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:28:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:33,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:33,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:33,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:28:33,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:28:33,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 14:28:33,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:33,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:33,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:33,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:28:33,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:33,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:33,207 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 14:28:33,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829503395] [2020-10-28 14:28:33,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:28:33,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:28:33,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244983763] [2020-10-28 14:28:33,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:28:33,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:28:33,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:28:33,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:28:33,233 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-10-28 14:28:33,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:28:33,443 INFO L93 Difference]: Finished difference Result 73 states and 99 transitions. [2020-10-28 14:28:33,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:28:33,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-28 14:28:33,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:28:33,457 INFO L225 Difference]: With dead ends: 73 [2020-10-28 14:28:33,458 INFO L226 Difference]: Without dead ends: 35 [2020-10-28 14:28:33,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:28:33,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-28 14:28:33,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-28 14:28:33,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-28 14:28:33,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2020-10-28 14:28:33,526 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 19 [2020-10-28 14:28:33,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:28:33,527 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2020-10-28 14:28:33,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:28:33,528 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2020-10-28 14:28:33,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-28 14:28:33,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:28:33,530 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] [2020-10-28 14:28:33,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:28:33,531 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:28:33,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:28:33,534 INFO L82 PathProgramCache]: Analyzing trace with hash -427181206, now seen corresponding path program 1 times [2020-10-28 14:28:33,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:28:33,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716783066] [2020-10-28 14:28:33,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:28:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:28:33,634 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:28:33,634 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:28:33,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:28:33,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:28:33 BoogieIcfgContainer [2020-10-28 14:28:33,660 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:28:33,666 INFO L168 Benchmark]: Toolchain (without parser) took 2203.58 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 80.4 MB in the end (delta: 46.1 MB). Peak memory consumption was 45.9 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:33,668 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 126.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:28:33,670 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.63 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 115.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:33,672 INFO L168 Benchmark]: Boogie Preprocessor took 81.71 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:33,672 INFO L168 Benchmark]: RCFGBuilder took 611.71 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 95.4 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:33,673 INFO L168 Benchmark]: TraceAbstraction took 1151.92 ms. Allocated memory is still 151.0 MB. Free memory was 95.0 MB in the beginning and 80.4 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:33,689 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 126.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 334.63 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 115.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 81.71 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 611.71 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 95.4 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1151.92 ms. Allocated memory is still 151.0 MB. Free memory was 95.0 MB in the beginning and 80.4 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.5 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 someBinaryFLOATComparisonOperation at line 81, overapproximation of bitwiseAnd at line 25, overapproximation of someUnaryFLOAToperation at line 77, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L77] float x = -0.0f; [L78] CALL, EXPR round_float(x) [L15] __uint32_t w; [L17] int exponent_less_127; [L20] ieee_float_shape_type gf_u; [L21] gf_u.value = (x) [L22] EXPR gf_u.word [L22] (w) = gf_u.word [L25] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 [L27] COND FALSE !(exponent_less_127 < 23) [L43] COND TRUE exponent_less_127 == 128 [L45] return x + x; [L78] RET, EXPR round_float(x) [L78] float res = round_float(x); [L81] EXPR res == -0.0f && __signbit_float(res) == 1 [L81] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L82] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1032b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 8 SDslu, 34 SDs, 0 SdLazy, 39 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 1080 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...