/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_1121a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:44:55,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:44:55,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:44:55,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:44:55,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:44:55,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:44:55,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:44:55,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:44:55,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:44:55,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:44:55,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:44:55,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:44:55,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:44:55,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:44:55,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:44:55,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:44:55,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:44:55,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:44:55,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:44:55,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:44:55,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:44:55,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:44:55,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:44:55,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:44:55,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:44:55,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:44:55,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:44:55,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:44:55,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:44:55,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:44:55,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:44:55,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:44:55,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:44:55,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:44:55,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:44:55,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:44:55,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:44:55,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:44:55,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:44:55,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:44:55,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:44:55,469 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 19:44:55,498 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:44:55,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:44:55,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:44:55,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:44:55,503 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:44:55,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:44:55,504 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:44:55,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:44:55,504 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:44:55,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:44:55,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:44:55,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:44:55,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:44:55,505 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:44:55,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:44:55,506 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:44:55,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:44:55,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:44:55,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:44:55,507 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:44:55,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:44:55,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:44:55,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:44:55,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:44:55,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:44:55,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:44:55,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:44:55,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:44:55,509 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:44:55,509 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:44:55,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:44:55,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:44:55,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:44:55,971 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:44:55,972 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:44:55,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1121a.c [2020-10-27 19:44:56,061 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02e4803a9/5c2babcfdb8c486b857129e37c22765e/FLAG0167375b3 [2020-10-27 19:44:56,733 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:44:56,734 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1121a.c [2020-10-27 19:44:56,748 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02e4803a9/5c2babcfdb8c486b857129e37c22765e/FLAG0167375b3 [2020-10-27 19:44:57,063 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02e4803a9/5c2babcfdb8c486b857129e37c22765e [2020-10-27 19:44:57,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:44:57,072 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:44:57,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:44:57,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:44:57,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:44:57,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:44:57" (1/1) ... [2020-10-27 19:44:57,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538a8848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:57, skipping insertion in model container [2020-10-27 19:44:57,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:44:57" (1/1) ... [2020-10-27 19:44:57,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:44:57,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:44:57,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:44:57,325 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:44:57,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:44:57,395 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:44:57,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:57 WrapperNode [2020-10-27 19:44:57,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:44:57,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:44:57,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:44:57,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:44:57,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:57" (1/1) ... [2020-10-27 19:44:57,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:57" (1/1) ... [2020-10-27 19:44:57,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:57" (1/1) ... [2020-10-27 19:44:57,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:57" (1/1) ... [2020-10-27 19:44:57,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:57" (1/1) ... [2020-10-27 19:44:57,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:57" (1/1) ... [2020-10-27 19:44:57,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:57" (1/1) ... [2020-10-27 19:44:57,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:44:57,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:44:57,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:44:57,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:44:57,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:57" (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 19:44:57,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:44:57,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:44:57,536 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:44:57,536 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-10-27 19:44:57,537 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-27 19:44:57,537 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:44:57,538 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:44:57,538 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:44:57,538 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:44:57,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:44:57,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 19:44:57,541 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-10-27 19:44:57,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 19:44:57,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:44:57,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:44:57,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 19:44:57,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:44:57,543 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-27 19:44:57,543 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:44:57,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:44:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:44:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-27 19:44:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:44:58,246 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:44:58,246 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-27 19:44:58,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:44:58 BoogieIcfgContainer [2020-10-27 19:44:58,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:44:58,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:44:58,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:44:58,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:44:58,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:44:57" (1/3) ... [2020-10-27 19:44:58,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e5a056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:44:58, skipping insertion in model container [2020-10-27 19:44:58,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:44:57" (2/3) ... [2020-10-27 19:44:58,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e5a056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:44:58, skipping insertion in model container [2020-10-27 19:44:58,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:44:58" (3/3) ... [2020-10-27 19:44:58,258 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1121a.c [2020-10-27 19:44:58,271 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:44:58,277 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:44:58,292 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:44:58,323 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:44:58,323 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:44:58,323 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:44:58,323 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:44:58,324 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:44:58,324 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:44:58,324 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:44:58,324 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:44:58,350 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-10-27 19:44:58,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 19:44:58,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:44:58,359 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, 1] [2020-10-27 19:44:58,359 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:44:58,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:44:58,369 INFO L82 PathProgramCache]: Analyzing trace with hash 859309759, now seen corresponding path program 1 times [2020-10-27 19:44:58,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:44:58,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679267792] [2020-10-27 19:44:58,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:44:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:44:58,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:58,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:58,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:44:58,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 19:44:58,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:44:58,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-27 19:44:58,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:44:58,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:44:58,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 19:44:58,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:44:58,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:44:58,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:44:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:44:58,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:58,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:44:58,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:44:58,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:44:58,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 19:44:58,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:44:58,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:44:58,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:44:58,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:44:58,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:44:58,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:44:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:44:58,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:58,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:59,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:44:59,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 19:44:59,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:44:59,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 19:44:59,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:44:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:44:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 19:44:59,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:44:59,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:44:59,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 19:44:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:44:59,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:44:59,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:44:59,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:44:59,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:44:59,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 19:44:59,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:44:59,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:44:59,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:44:59,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:44:59,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:44:59,080 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 19:44:59,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679267792] [2020-10-27 19:44:59,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:44:59,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:44:59,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688544659] [2020-10-27 19:44:59,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:44:59,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:44:59,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:44:59,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:44:59,108 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 4 states. [2020-10-27 19:44:59,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:44:59,391 INFO L93 Difference]: Finished difference Result 107 states and 164 transitions. [2020-10-27 19:44:59,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 19:44:59,393 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-27 19:44:59,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:44:59,403 INFO L225 Difference]: With dead ends: 107 [2020-10-27 19:44:59,403 INFO L226 Difference]: Without dead ends: 52 [2020-10-27 19:44:59,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:44:59,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-27 19:44:59,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-27 19:44:59,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-27 19:44:59,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2020-10-27 19:44:59,457 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 23 [2020-10-27 19:44:59,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:44:59,458 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2020-10-27 19:44:59,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:44:59,458 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2020-10-27 19:44:59,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 19:44:59,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:44:59,460 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, 1, 1, 1] [2020-10-27 19:44:59,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:44:59,460 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:44:59,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:44:59,461 INFO L82 PathProgramCache]: Analyzing trace with hash 853024034, now seen corresponding path program 1 times [2020-10-27 19:44:59,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:44:59,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844234703] [2020-10-27 19:44:59,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:44:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 19:44:59,574 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 19:44:59,574 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 19:44:59,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:44:59,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:44:59 BoogieIcfgContainer [2020-10-27 19:44:59,602 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:44:59,608 INFO L168 Benchmark]: Toolchain (without parser) took 2536.16 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 126.8 MB in the beginning and 162.1 MB in the end (delta: -35.3 MB). Peak memory consumption was 39.6 kB. Max. memory is 8.0 GB. [2020-10-27 19:44:59,609 INFO L168 Benchmark]: CDTParser took 0.57 ms. Allocated memory is still 151.0 MB. Free memory is still 121.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:44:59,610 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.53 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 114.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:59,612 INFO L168 Benchmark]: Boogie Preprocessor took 54.20 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 112.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:59,612 INFO L168 Benchmark]: RCFGBuilder took 796.74 ms. Allocated memory is still 151.0 MB. Free memory was 112.5 MB in the beginning and 122.8 MB in the end (delta: -10.3 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-10-27 19:44:59,613 INFO L168 Benchmark]: TraceAbstraction took 1352.09 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 122.3 MB in the beginning and 162.1 MB in the end (delta: -39.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:44:59,617 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 ms. Allocated memory is still 151.0 MB. Free memory is still 121.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 321.53 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 114.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 54.20 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 112.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 796.74 ms. Allocated memory is still 151.0 MB. Free memory was 112.5 MB in the beginning and 122.8 MB in the end (delta: -10.3 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1352.09 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 122.3 MB in the beginning and 162.1 MB in the end (delta: -39.8 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 110, 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, }; [L118] float x = __VERIFIER_nondet_float(); [L119] float y = 0.0f; [L121] 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); [L121] RET, EXPR fmod_float(x, y) [L121] float res = fmod_float(x, y); [L124] CALL, EXPR isnan_float(res) [L110] return x != x; [L124] RET, EXPR isnan_float(res) [L124] COND TRUE !isnan_float(res) [L125] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1121a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 69 SDtfs, 10 SDslu, 54 SDs, 0 SdLazy, 70 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred 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, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1606 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...