/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1071.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:28:34,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:28:34,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:28:34,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:28:34,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:28:34,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:28:34,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:28:34,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:28:34,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:28:34,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:28:34,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:28:34,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:28:34,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:28:34,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:28:34,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:28:34,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:28:34,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:28:34,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:28:34,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:28:34,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:28:34,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:28:34,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:28:34,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:28:34,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:28:34,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:28:34,377 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:28:34,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:28:34,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:28:34,381 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:28:34,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:28:34,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:28:34,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:28:34,385 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:28:34,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:28:34,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:28:34,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:28:34,388 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:28:34,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:28:34,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:28:34,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:28:34,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:28:34,399 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 14:28:34,445 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:28:34,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:28:34,446 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:28:34,447 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:28:34,447 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:28:34,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:28:34,447 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:28:34,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:28:34,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:28:34,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:28:34,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:28:34,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:28:34,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:28:34,449 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:28:34,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:28:34,449 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:28:34,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:28:34,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:28:34,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:28:34,450 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:28:34,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:28:34,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:28:34,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:28:34,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:28:34,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:28:34,451 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:28:34,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:28:34,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:28:34,452 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:28:34,452 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:28:34,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:28:34,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:28:34,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:28:34,865 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:28:34,866 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:28:34,867 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1071.c [2020-10-28 14:28:34,948 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c58261f3/4ef5431f0d4c4fed96739a97ebdb5ab6/FLAGbd10a61b1 [2020-10-28 14:28:35,609 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:28:35,610 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1071.c [2020-10-28 14:28:35,623 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c58261f3/4ef5431f0d4c4fed96739a97ebdb5ab6/FLAGbd10a61b1 [2020-10-28 14:28:35,916 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c58261f3/4ef5431f0d4c4fed96739a97ebdb5ab6 [2020-10-28 14:28:35,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:28:35,932 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:28:35,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:28:35,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:28:35,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:28:35,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:28:35" (1/1) ... [2020-10-28 14:28:35,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74e09d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:35, skipping insertion in model container [2020-10-28 14:28:35,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:28:35" (1/1) ... [2020-10-28 14:28:35,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:28:35,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:28:36,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:28:36,196 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:28:36,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:28:36,239 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:28:36,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:36 WrapperNode [2020-10-28 14:28:36,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:28:36,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:28:36,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:28:36,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:28:36,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:36" (1/1) ... [2020-10-28 14:28:36,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:36" (1/1) ... [2020-10-28 14:28:36,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:36" (1/1) ... [2020-10-28 14:28:36,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:36" (1/1) ... [2020-10-28 14:28:36,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:36" (1/1) ... [2020-10-28 14:28:36,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:36" (1/1) ... [2020-10-28 14:28:36,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:36" (1/1) ... [2020-10-28 14:28:36,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:28:36,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:28:36,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:28:36,286 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:28:36,287 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:28:36,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:28:36,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:28:36,370 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:28:36,370 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_float [2020-10-28 14:28:36,371 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-28 14:28:36,371 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:28:36,371 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:28:36,371 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:28:36,372 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:28:36,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:28:36,372 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_float [2020-10-28 14:28:36,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:28:36,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:28:36,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:28:36,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:28:36,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:28:36,373 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-28 14:28:36,374 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:28:36,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:28:36,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:28:36,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:28:37,000 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:28:37,001 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-28 14:28:37,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:28:37 BoogieIcfgContainer [2020-10-28 14:28:37,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:28:37,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:28:37,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:28:37,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:28:37,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:28:35" (1/3) ... [2020-10-28 14:28:37,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b639cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:28:37, skipping insertion in model container [2020-10-28 14:28:37,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:36" (2/3) ... [2020-10-28 14:28:37,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b639cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:28:37, skipping insertion in model container [2020-10-28 14:28:37,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:28:37" (3/3) ... [2020-10-28 14:28:37,019 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071.c [2020-10-28 14:28:37,034 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:28:37,039 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:28:37,055 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:28:37,109 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:28:37,110 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:28:37,110 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:28:37,110 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:28:37,110 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:28:37,110 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:28:37,111 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:28:37,111 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:28:37,137 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-28 14:28:37,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 14:28:37,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:28:37,150 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] [2020-10-28 14:28:37,150 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:28:37,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:28:37,161 INFO L82 PathProgramCache]: Analyzing trace with hash -756220712, now seen corresponding path program 1 times [2020-10-28 14:28:37,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:28:37,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535077949] [2020-10-28 14:28:37,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:28:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:37,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:37,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:37,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 14:28:37,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:28:37,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-28 14:28:37,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:37,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:37,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:37,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 14:28:37,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:37,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:28:37,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:28:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:37,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:37,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:37,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:28:37,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:28:37,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 14:28:37,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:37,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:37,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:37,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:28:37,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:37,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:37,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:28:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:37,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:37,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:37,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:28:37,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:28:37,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 14:28:37,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:37,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:37,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:37,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:28:37,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:37,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:37,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:28:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:37,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:37,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:37,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:28:37,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:28:37,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:28:37,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:37,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:37,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:37,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:28:37,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:37,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:37,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:28:37,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535077949] [2020-10-28 14:28:37,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:28:37,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:28:37,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707031350] [2020-10-28 14:28:37,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:28:37,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:28:37,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:28:37,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:28:37,816 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 4 states. [2020-10-28 14:28:37,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:28:37,982 INFO L93 Difference]: Finished difference Result 65 states and 84 transitions. [2020-10-28 14:28:37,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:28:37,984 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-28 14:28:37,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:28:37,993 INFO L225 Difference]: With dead ends: 65 [2020-10-28 14:28:37,993 INFO L226 Difference]: Without dead ends: 31 [2020-10-28 14:28:37,997 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 [2020-10-28 14:28:38,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-28 14:28:38,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-28 14:28:38,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-28 14:28:38,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-10-28 14:28:38,044 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 23 [2020-10-28 14:28:38,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:28:38,045 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-10-28 14:28:38,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:28:38,045 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-10-28 14:28:38,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 14:28:38,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:28:38,047 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] [2020-10-28 14:28:38,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:28:38,047 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:28:38,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:28:38,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1304888725, now seen corresponding path program 1 times [2020-10-28 14:28:38,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:28:38,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793477271] [2020-10-28 14:28:38,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:28:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:28:38,098 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:28:38,099 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:28:38,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:28:38,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:28:38 BoogieIcfgContainer [2020-10-28 14:28:38,123 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:28:38,126 INFO L168 Benchmark]: Toolchain (without parser) took 2200.71 ms. Allocated memory is still 172.0 MB. Free memory was 146.5 MB in the beginning and 92.6 MB in the end (delta: 53.9 MB). Peak memory consumption was 54.3 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:38,127 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 172.0 MB. Free memory is still 144.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:28:38,128 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.76 ms. Allocated memory is still 172.0 MB. Free memory was 145.9 MB in the beginning and 135.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:38,129 INFO L168 Benchmark]: Boogie Preprocessor took 43.82 ms. Allocated memory is still 172.0 MB. Free memory was 135.2 MB in the beginning and 133.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:38,130 INFO L168 Benchmark]: RCFGBuilder took 719.07 ms. Allocated memory is still 172.0 MB. Free memory was 133.5 MB in the beginning and 149.7 MB in the end (delta: -16.2 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:38,130 INFO L168 Benchmark]: TraceAbstraction took 1114.22 ms. Allocated memory is still 172.0 MB. Free memory was 149.7 MB in the beginning and 92.6 MB in the end (delta: 57.1 MB). Peak memory consumption was 57.7 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:38,134 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 172.0 MB. Free memory is still 144.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 304.76 ms. Allocated memory is still 172.0 MB. Free memory was 145.9 MB in the beginning and 135.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.82 ms. Allocated memory is still 172.0 MB. Free memory was 135.2 MB in the beginning and 133.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 719.07 ms. Allocated memory is still 172.0 MB. Free memory was 133.5 MB in the beginning and 149.7 MB in the end (delta: -16.2 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1114.22 ms. Allocated memory is still 172.0 MB. Free memory was 149.7 MB in the beginning and 92.6 MB in the end (delta: 57.1 MB). Peak memory consumption was 57.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 46, overapproximation of someBinaryArithmeticFLOAToperation at line 40, overapproximation of bitwiseAnd at line 21. Possible FailurePath: [L54] float x = 0.0f / 0.0f; [L55] CALL, EXPR trunc_float(x) [L15] __int32_t signbit, w, exponent_less_127; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (w) = gf_u.word [L21] signbit = w & 0x80000000 [L22] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 [L23] COND FALSE !(exponent_less_127 < 23) [L39] COND TRUE exponent_less_127 == 255 [L40] return x + x; [L55] RET, EXPR trunc_float(x) [L55] float res = trunc_float(x); [L58] CALL, EXPR isnan_float(res) [L46] return x != x; [L58] RET, EXPR isnan_float(res) [L58] COND TRUE !isnan_float(res) [L59] CALL reach_error() [L4] __assert_fail("0", "float_req_bl_1071.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 10 SDslu, 24 SDs, 0 SdLazy, 32 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s 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=38occurred 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, 0.4s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1408 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...