/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0832.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:01:51,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:01:51,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:01:51,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:01:51,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:01:51,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:01:51,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:01:51,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:01:51,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:01:51,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:01:51,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:01:51,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:01:51,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:01:51,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:01:51,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:01:51,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:01:51,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:01:51,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:01:51,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:01:51,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:01:51,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:01:51,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:01:51,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:01:51,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:01:52,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:01:52,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:01:52,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:01:52,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:01:52,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:01:52,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:01:52,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:01:52,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:01:52,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:01:52,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:01:52,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:01:52,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:01:52,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:01:52,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:01:52,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:01:52,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:01:52,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:01:52,026 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 01:01:52,079 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:01:52,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:01:52,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:01:52,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:01:52,085 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:01:52,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:01:52,085 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:01:52,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:01:52,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:01:52,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:01:52,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:01:52,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:01:52,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:01:52,088 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:01:52,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:01:52,089 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:01:52,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:01:52,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:01:52,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:01:52,089 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:01:52,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:01:52,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:01:52,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:01:52,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:01:52,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:01:52,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:01:52,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:01:52,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:01:52,091 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:01:52,092 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:01:52,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:01:52,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:01:52,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:01:52,610 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:01:52,611 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:01:52,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0832.c [2020-10-27 01:01:52,684 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebd8c9b97/9de9ed5e79a1403cadd853602ae085b5/FLAG2d2309906 [2020-10-27 01:01:53,388 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:01:53,389 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0832.c [2020-10-27 01:01:53,398 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebd8c9b97/9de9ed5e79a1403cadd853602ae085b5/FLAG2d2309906 [2020-10-27 01:01:53,744 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebd8c9b97/9de9ed5e79a1403cadd853602ae085b5 [2020-10-27 01:01:53,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:01:53,757 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:01:53,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:01:53,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:01:53,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:01:53,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:01:53" (1/1) ... [2020-10-27 01:01:53,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@722b5c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:53, skipping insertion in model container [2020-10-27 01:01:53,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:01:53" (1/1) ... [2020-10-27 01:01:53,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:01:53,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:01:54,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:01:54,051 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:01:54,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:01:54,133 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:01:54,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:54 WrapperNode [2020-10-27 01:01:54,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:01:54,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:01:54,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:01:54,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:01:54,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:54" (1/1) ... [2020-10-27 01:01:54,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:54" (1/1) ... [2020-10-27 01:01:54,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:54" (1/1) ... [2020-10-27 01:01:54,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:54" (1/1) ... [2020-10-27 01:01:54,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:54" (1/1) ... [2020-10-27 01:01:54,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:54" (1/1) ... [2020-10-27 01:01:54,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:54" (1/1) ... [2020-10-27 01:01:54,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:01:54,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:01:54,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:01:54,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:01:54,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:01:54,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:01:54,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:01:54,290 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:01:54,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_exp [2020-10-27 01:01:54,291 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:01:54,291 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:01:54,291 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:01:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:01:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:01:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-27 01:01:54,293 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_exp [2020-10-27 01:01:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:01:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:01:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:01:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:01:54,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:01:54,295 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:01:54,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:01:54,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:01:54,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-27 01:01:54,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:01:54,986 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:01:54,986 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-27 01:01:54,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:01:54 BoogieIcfgContainer [2020-10-27 01:01:54,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:01:54,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:01:54,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:01:54,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:01:54,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:01:53" (1/3) ... [2020-10-27 01:01:54,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f1e79f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:01:54, skipping insertion in model container [2020-10-27 01:01:54,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:54" (2/3) ... [2020-10-27 01:01:54,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f1e79f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:01:54, skipping insertion in model container [2020-10-27 01:01:54,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:01:54" (3/3) ... [2020-10-27 01:01:54,998 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0832.c [2020-10-27 01:01:55,010 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:01:55,016 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:01:55,031 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:01:55,059 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:01:55,059 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:01:55,060 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:01:55,060 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:01:55,060 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:01:55,060 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:01:55,060 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:01:55,060 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:01:55,080 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-27 01:01:55,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 01:01:55,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:01:55,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:01:55,090 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:01:55,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:01:55,097 INFO L82 PathProgramCache]: Analyzing trace with hash 694942146, now seen corresponding path program 1 times [2020-10-27 01:01:55,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:01:55,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772933209] [2020-10-27 01:01:55,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:01:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:01:55,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:55,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:01:55,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 01:01:55,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:01:55,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-27 01:01:55,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:01:55,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:01:55,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 01:01:55,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:01:55,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 01:01:55,719 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-27 01:01:55,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:01:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:01:55,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:55,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:01:55,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:01:55,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:01:55,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 01:01:55,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:01:55,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:01:55,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:01:55,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:01:55,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:01:55,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 01:01:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:01:55,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:55,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:01:55,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:01:55,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:01:55,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 01:01:55,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:01:55,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:01:55,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:01:55,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:01:55,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:01:55,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:01:55,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772933209] [2020-10-27 01:01:55,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:01:55,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:01:55,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129776326] [2020-10-27 01:01:55,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:01:55,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:01:55,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:01:55,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:01:55,890 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2020-10-27 01:01:56,032 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 01:01:56,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:01:56,238 INFO L93 Difference]: Finished difference Result 99 states and 149 transitions. [2020-10-27 01:01:56,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:01:56,240 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-27 01:01:56,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:01:56,252 INFO L225 Difference]: With dead ends: 99 [2020-10-27 01:01:56,252 INFO L226 Difference]: Without dead ends: 46 [2020-10-27 01:01:56,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:01:56,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-27 01:01:56,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-10-27 01:01:56,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 01:01:56,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2020-10-27 01:01:56,309 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 20 [2020-10-27 01:01:56,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:01:56,309 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2020-10-27 01:01:56,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:01:56,310 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2020-10-27 01:01:56,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 01:01:56,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:01:56,311 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:01:56,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:01:56,312 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:01:56,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:01:56,313 INFO L82 PathProgramCache]: Analyzing trace with hash -689168306, now seen corresponding path program 1 times [2020-10-27 01:01:56,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:01:56,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333396268] [2020-10-27 01:01:56,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:01:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:01:56,360 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:01:56,361 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:01:56,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:01:56,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:01:56 BoogieIcfgContainer [2020-10-27 01:01:56,384 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:01:56,386 INFO L168 Benchmark]: Toolchain (without parser) took 2634.26 ms. Allocated memory is still 158.3 MB. Free memory was 133.0 MB in the beginning and 78.4 MB in the end (delta: 54.6 MB). Peak memory consumption was 56.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:01:56,387 INFO L168 Benchmark]: CDTParser took 0.68 ms. Allocated memory is still 125.8 MB. Free memory is still 80.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:01:56,388 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.99 ms. Allocated memory is still 158.3 MB. Free memory was 132.5 MB in the beginning and 120.4 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:01:56,389 INFO L168 Benchmark]: Boogie Preprocessor took 61.12 ms. Allocated memory is still 158.3 MB. Free memory was 120.4 MB in the beginning and 118.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:01:56,390 INFO L168 Benchmark]: RCFGBuilder took 788.85 ms. Allocated memory is still 158.3 MB. Free memory was 118.0 MB in the beginning and 131.7 MB in the end (delta: -13.8 MB). Peak memory consumption was 26.0 MB. Max. memory is 8.0 GB. [2020-10-27 01:01:56,391 INFO L168 Benchmark]: TraceAbstraction took 1393.70 ms. Allocated memory is still 158.3 MB. Free memory was 131.7 MB in the beginning and 78.4 MB in the end (delta: 53.3 MB). Peak memory consumption was 54.3 MB. Max. memory is 8.0 GB. [2020-10-27 01:01:56,394 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68 ms. Allocated memory is still 125.8 MB. Free memory is still 80.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 373.99 ms. Allocated memory is still 158.3 MB. Free memory was 132.5 MB in the beginning and 120.4 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 61.12 ms. Allocated memory is still 158.3 MB. Free memory was 120.4 MB in the beginning and 118.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 788.85 ms. Allocated memory is still 158.3 MB. Free memory was 118.0 MB in the beginning and 131.7 MB in the end (delta: -13.8 MB). Peak memory consumption was 26.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1393.70 ms. Allocated memory is still 158.3 MB. Free memory was 131.7 MB in the beginning and 78.4 MB in the end (delta: 53.3 MB). Peak memory consumption was 54.3 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 someUnaryDOUBLEoperation at line 23, overapproximation of bitwiseAnd at line 56, overapproximation of someBinaryArithmeticDOUBLEoperation at line 73, overapproximation of someBinaryDOUBLEComparisonOperation at line 146. Possible FailurePath: [L19-L44] static const double one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+300, twom1000_exp = 9.33263618503218878990e-302, o_threshold_exp = 7.09782712893383973096e+02, u_threshold_exp = -7.45133219101941108420e+02, ln2HI_exp[2] = { 6.93147180369123816490e-01, -6.93147180369123816490e-01, }, ln2LO_exp[2] = { 1.90821492927058770002e-10, -1.90821492927058770002e-10, }, invln2_exp = 1.44269504088896338700e+00, P1_exp = 1.66666666666666019037e-01, P2_exp = -2.77777777770155933842e-03, P3_exp = 6.61375632143793436117e-05, P4_exp = -1.65339022054652515390e-06, P5_exp = 4.13813679705723846039e-08; [L139] double x = __VERIFIER_nondet_double(); [L141] COND TRUE x == 0.0 || x == -0.0 [L143] CALL, EXPR __ieee754_exp(x) [L47] double y, hi, lo, c, t; [L48] __int32_t k = 0, xsb; [L49] __uint32_t hx; [L52] ieee_double_shape_type gh_u; [L53] gh_u.value = (x) [L54] EXPR gh_u.parts.msw [L54] (hx) = gh_u.parts.msw [L56] xsb = (hx >> 31) & 1 [L57] hx &= 0x7fffffff [L59] COND TRUE hx >= 0x40862E42 [L60] COND FALSE !(hx >= 0x7ff00000) [L72] COND TRUE x > o_threshold_exp [L73] return huge_exp * huge_exp; [L143] RET, EXPR __ieee754_exp(x) [L143] double res = __ieee754_exp(x); [L146] COND TRUE res != 1.0 [L147] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_0832.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 14 SDslu, 46 SDs, 0 SdLazy, 64 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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, 0.5s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 2128 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...