/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=DEEPEST --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_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:44:56,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:44:56,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:44:57,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:44:57,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:44:57,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:44:57,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:44:57,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:44:57,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:44:57,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:44:57,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:44:57,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:44:57,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:44:57,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:44:57,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:44:57,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:44:57,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:44:57,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:44:57,063 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:44:57,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:44:57,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:44:57,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:44:57,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:44:57,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:44:57,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:44:57,093 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:44:57,093 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:44:57,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:44:57,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:44:57,097 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:44:57,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:44:57,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:44:57,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:44:57,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:44:57,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:44:57,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:44:57,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:44:57,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:44:57,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:44:57,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:44:57,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:44:57,115 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 19:44:57,189 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:44:57,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:44:57,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:44:57,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:44:57,195 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:44:57,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:44:57,195 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:44:57,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:44:57,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:44:57,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:44:57,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:44:57,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:44:57,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:44:57,197 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:44:57,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:44:57,198 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:44:57,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:44:57,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:44:57,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:44:57,199 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:44:57,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:44:57,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:44:57,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:44:57,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:44:57,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:44:57,200 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:44:57,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:44:57,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:44:57,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:44:57,200 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:44:57,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:44:57,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:44:57,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:44:57,676 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:44:57,677 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:44:57,678 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-10-27 19:44:57,757 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe33b2957/dfe5720018a04e799dbaa165def19445/FLAG9a462ef77 [2020-10-27 19:44:58,439 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:44:58,440 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-10-27 19:44:58,452 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe33b2957/dfe5720018a04e799dbaa165def19445/FLAG9a462ef77 [2020-10-27 19:44:58,797 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe33b2957/dfe5720018a04e799dbaa165def19445 [2020-10-27 19:44:58,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:44:58,807 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:44:58,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:44:58,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:44:58,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:44:58,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:44:58" (1/1) ... [2020-10-27 19:44:58,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f86f8b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:58, skipping insertion in model container [2020-10-27 19:44:58,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:44:58" (1/1) ... [2020-10-27 19:44:58,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:44:58,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:44:59,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:44:59,099 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:44:59,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:44:59,177 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:44:59,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:59 WrapperNode [2020-10-27 19:44:59,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:44:59,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:44:59,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:44:59,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:44:59,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:59" (1/1) ... [2020-10-27 19:44:59,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:59" (1/1) ... [2020-10-27 19:44:59,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:59" (1/1) ... [2020-10-27 19:44:59,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:59" (1/1) ... [2020-10-27 19:44:59,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:59" (1/1) ... [2020-10-27 19:44:59,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:59" (1/1) ... [2020-10-27 19:44:59,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:59" (1/1) ... [2020-10-27 19:44:59,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:44:59,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:44:59,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:44:59,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:44:59,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:59" (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 19:44:59,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:44:59,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:44:59,343 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:44:59,343 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-10-27 19:44:59,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-27 19:44:59,345 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:44:59,345 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:44:59,345 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:44:59,346 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:44:59,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:44:59,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 19:44:59,347 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-10-27 19:44:59,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 19:44:59,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:44:59,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:44:59,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 19:44:59,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:44:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-27 19:44:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:44:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:44:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:44:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-27 19:44:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:45:00,251 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:45:00,251 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-27 19:45:00,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:45:00 BoogieIcfgContainer [2020-10-27 19:45:00,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:45:00,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:45:00,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:45:00,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:45:00,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:44:58" (1/3) ... [2020-10-27 19:45:00,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac77465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:45:00, skipping insertion in model container [2020-10-27 19:45:00,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:59" (2/3) ... [2020-10-27 19:45:00,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac77465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:45:00, skipping insertion in model container [2020-10-27 19:45:00,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:45:00" (3/3) ... [2020-10-27 19:45:00,263 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-10-27 19:45:00,276 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:45:00,282 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:45:00,296 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:45:00,326 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:45:00,326 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:45:00,326 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:45:00,326 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:45:00,326 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:45:00,327 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:45:00,327 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:45:00,327 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:45:00,347 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-10-27 19:45:00,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 19:45:00,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:45:00,355 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 19:45:00,356 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:45:00,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:45:00,363 INFO L82 PathProgramCache]: Analyzing trace with hash -575871545, now seen corresponding path program 1 times [2020-10-27 19:45:00,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:45:00,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426758072] [2020-10-27 19:45:00,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:45:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:00,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:00,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:00,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:00,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 19:45:00,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:45:00,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-27 19:45:00,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:00,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:00,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 19:45:00,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:00,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:45:00,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:45:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:00,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:00,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:00,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:00,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:00,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 19:45:00,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:00,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:00,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:00,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:00,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:45:00,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 19:45:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:00,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:00,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:01,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:01,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 19:45:01,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:45:01,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 19:45:01,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:01,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:01,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 19:45:01,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:01,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:01,036 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 19:45:01,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426758072] [2020-10-27 19:45:01,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:45:01,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:45:01,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097586936] [2020-10-27 19:45:01,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:45:01,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:45:01,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:45:01,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:45:01,095 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 4 states. [2020-10-27 19:45:01,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:45:01,372 INFO L93 Difference]: Finished difference Result 121 states and 186 transitions. [2020-10-27 19:45:01,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 19:45:01,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-27 19:45:01,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:45:01,384 INFO L225 Difference]: With dead ends: 121 [2020-10-27 19:45:01,385 INFO L226 Difference]: Without dead ends: 57 [2020-10-27 19:45:01,388 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 [2020-10-27 19:45:01,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-27 19:45:01,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-27 19:45:01,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-27 19:45:01,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 73 transitions. [2020-10-27 19:45:01,439 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 73 transitions. Word has length 20 [2020-10-27 19:45:01,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:45:01,440 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 73 transitions. [2020-10-27 19:45:01,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:45:01,440 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 73 transitions. [2020-10-27 19:45:01,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 19:45:01,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:45:01,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:45:01,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:45:01,442 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:45:01,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:45:01,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1727493878, now seen corresponding path program 1 times [2020-10-27 19:45:01,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:45:01,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330215472] [2020-10-27 19:45:01,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:45:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 19:45:01,496 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 19:45:01,497 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 19:45:01,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:45:01,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:45:01 BoogieIcfgContainer [2020-10-27 19:45:01,523 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:45:01,526 INFO L168 Benchmark]: Toolchain (without parser) took 2722.59 ms. Allocated memory is still 164.6 MB. Free memory was 139.5 MB in the beginning and 108.1 MB in the end (delta: 31.3 MB). Peak memory consumption was 32.4 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:01,526 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 164.6 MB. Free memory is still 138.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:45:01,527 INFO L168 Benchmark]: CACSL2BoogieTranslator took 370.24 ms. Allocated memory is still 164.6 MB. Free memory was 138.9 MB in the beginning and 127.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:01,528 INFO L168 Benchmark]: Boogie Preprocessor took 64.37 ms. Allocated memory is still 164.6 MB. Free memory was 127.4 MB in the beginning and 125.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:01,529 INFO L168 Benchmark]: RCFGBuilder took 1008.22 ms. Allocated memory is still 164.6 MB. Free memory was 124.8 MB in the beginning and 97.0 MB in the end (delta: 27.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:01,530 INFO L168 Benchmark]: TraceAbstraction took 1268.11 ms. Allocated memory is still 164.6 MB. Free memory was 97.0 MB in the beginning and 108.1 MB in the end (delta: -11.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:45:01,533 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 164.6 MB. Free memory is still 138.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 370.24 ms. Allocated memory is still 164.6 MB. Free memory was 138.9 MB in the beginning and 127.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 64.37 ms. Allocated memory is still 164.6 MB. Free memory was 127.4 MB in the beginning and 125.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1008.22 ms. Allocated memory is still 164.6 MB. Free memory was 124.8 MB in the beginning and 97.0 MB in the end (delta: 27.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1268.11 ms. Allocated memory is still 164.6 MB. Free memory was 97.0 MB in the beginning and 108.1 MB in the end (delta: -11.2 MB). There was no memory consumed. 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 136, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of bitwiseXor at line 33, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L128] float x = 0.0f; [L129] float y = __VERIFIER_nondet_float(); [L131] COND TRUE (y < 0.0f || y > 0.0f) [L133] CALL, EXPR fmod_float(x, y) [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); [L133] RET, EXPR fmod_float(x, y) [L133] float res = fmod_float(x, y); [L136] EXPR res == 0.0f && __signbit_float(res) == 0 [L136] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L137] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1130a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 76 SDtfs, 16 SDslu, 60 SDs, 0 SdLazy, 79 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 1330 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...