/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_0971.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:08:41,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:08:41,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:08:41,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:08:41,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:08:41,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:08:41,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:08:41,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:08:41,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:08:41,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:08:41,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:08:41,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:08:41,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:08:41,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:08:41,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:08:41,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:08:41,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:08:41,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:08:41,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:08:41,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:08:41,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:08:41,365 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:08:41,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:08:41,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:08:41,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:08:41,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:08:41,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:08:41,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:08:41,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:08:41,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:08:41,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:08:41,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:08:41,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:08:41,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:08:41,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:08:41,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:08:41,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:08:41,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:08:41,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:08:41,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:08:41,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:08:41,402 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 [2020-10-29 09:08:41,450 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:08:41,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:08:41,454 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:08:41,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:08:41,455 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:08:41,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:08:41,456 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:08:41,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:08:41,456 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:08:41,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:08:41,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:08:41,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:08:41,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:08:41,458 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:08:41,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:08:41,458 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:08:41,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:08:41,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:08:41,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:08:41,459 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:08:41,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:08:41,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:08:41,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:08:41,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:08:41,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:08:41,460 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:08:41,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:08:41,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:08:41,461 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:08:41,461 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:08:41,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:08:41,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:08:41,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:08:41,898 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:08:41,898 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:08:41,899 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0971.c [2020-10-29 09:08:41,990 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fb266580/734e43fd05224fca9578a7458f47f61b/FLAG2feb7ef82 [2020-10-29 09:08:42,587 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:08:42,591 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0971.c [2020-10-29 09:08:42,605 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fb266580/734e43fd05224fca9578a7458f47f61b/FLAG2feb7ef82 [2020-10-29 09:08:42,972 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fb266580/734e43fd05224fca9578a7458f47f61b [2020-10-29 09:08:42,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:08:42,985 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:08:42,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:08:42,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:08:42,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:08:42,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:08:42" (1/1) ... [2020-10-29 09:08:43,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44d2e5fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:42, skipping insertion in model container [2020-10-29 09:08:43,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:08:42" (1/1) ... [2020-10-29 09:08:43,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:08:43,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:08:43,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:08:43,263 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:08:43,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:08:43,341 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:08:43,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:43 WrapperNode [2020-10-29 09:08:43,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:08:43,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:08:43,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:08:43,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:08:43,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:43" (1/1) ... [2020-10-29 09:08:43,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:43" (1/1) ... [2020-10-29 09:08:43,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:43" (1/1) ... [2020-10-29 09:08:43,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:43" (1/1) ... [2020-10-29 09:08:43,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:43" (1/1) ... [2020-10-29 09:08:43,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:43" (1/1) ... [2020-10-29 09:08:43,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:43" (1/1) ... [2020-10-29 09:08:43,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:08:43,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:08:43,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:08:43,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:08:43,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:43" (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 [2020-10-29 09:08:43,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:08:43,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:08:43,481 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:08:43,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_logf [2020-10-29 09:08:43,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_log10f [2020-10-29 09:08:43,481 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-29 09:08:43,481 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:08:43,482 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:08:43,482 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:08:43,482 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:08:43,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:08:43,482 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_logf [2020-10-29 09:08:43,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-29 09:08:43,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:08:43,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:08:43,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:08:43,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-29 09:08:43,483 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_log10f [2020-10-29 09:08:43,484 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-29 09:08:43,484 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:08:43,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:08:43,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:08:43,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:08:44,132 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:08:44,133 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-29 09:08:44,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:08:44 BoogieIcfgContainer [2020-10-29 09:08:44,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:08:44,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:08:44,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:08:44,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:08:44,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:08:42" (1/3) ... [2020-10-29 09:08:44,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a93700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:08:44, skipping insertion in model container [2020-10-29 09:08:44,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:43" (2/3) ... [2020-10-29 09:08:44,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a93700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:08:44, skipping insertion in model container [2020-10-29 09:08:44,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:08:44" (3/3) ... [2020-10-29 09:08:44,146 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0971.c [2020-10-29 09:08:44,158 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:08:44,163 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:08:44,177 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:08:44,205 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:08:44,206 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:08:44,206 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:08:44,206 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:08:44,206 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:08:44,206 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:08:44,206 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:08:44,207 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:08:44,225 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-10-29 09:08:44,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 09:08:44,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:44,233 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] [2020-10-29 09:08:44,234 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:44,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:44,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1777127632, now seen corresponding path program 1 times [2020-10-29 09:08:44,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:44,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916829274] [2020-10-29 09:08:44,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:44,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:44,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:44,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 09:08:44,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:44,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-29 09:08:44,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:44,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:44,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:44,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 09:08:44,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:44,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:08:44,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:08:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:44,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:44,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:44,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:08:44,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:44,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 09:08:44,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:44,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:44,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:44,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:08:44,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:44,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:08:44,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:08:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:44,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:44,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:44,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:08:44,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:44,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:08:44,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:44,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:44,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:44,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 09:08:44,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:44,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:08:44,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 09:08:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:44,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:44,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:44,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:08:44,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:44,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:08:44,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:44,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:44,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:44,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:08:44,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:44,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:08:44,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:08:44,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916829274] [2020-10-29 09:08:44,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:08:44,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:08:44,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428362482] [2020-10-29 09:08:44,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:08:44,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:08:44,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:08:44,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:08:44,950 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 4 states. [2020-10-29 09:08:45,106 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-29 09:08:45,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:08:45,450 INFO L93 Difference]: Finished difference Result 117 states and 173 transitions. [2020-10-29 09:08:45,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:08:45,452 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-29 09:08:45,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:08:45,464 INFO L225 Difference]: With dead ends: 117 [2020-10-29 09:08:45,464 INFO L226 Difference]: Without dead ends: 57 [2020-10-29 09:08:45,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:08:45,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-29 09:08:45,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-29 09:08:45,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 09:08:45,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2020-10-29 09:08:45,523 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 22 [2020-10-29 09:08:45,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:08:45,524 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2020-10-29 09:08:45,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:08:45,524 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2020-10-29 09:08:45,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 09:08:45,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:45,526 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] [2020-10-29 09:08:45,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:08:45,526 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:45,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:45,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1554357565, now seen corresponding path program 1 times [2020-10-29 09:08:45,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:45,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556142315] [2020-10-29 09:08:45,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:08:45,595 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:08:45,595 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:08:45,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:08:45,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:08:45 BoogieIcfgContainer [2020-10-29 09:08:45,624 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:08:45,628 INFO L168 Benchmark]: Toolchain (without parser) took 2645.82 ms. Allocated memory was 168.8 MB in the beginning and 228.6 MB in the end (delta: 59.8 MB). Free memory was 142.9 MB in the beginning and 190.6 MB in the end (delta: -47.6 MB). Peak memory consumption was 12.3 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:45,629 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 168.8 MB. Free memory was 140.7 MB in the beginning and 140.6 MB in the end (delta: 102.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:08:45,631 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.24 ms. Allocated memory is still 168.8 MB. Free memory was 142.4 MB in the beginning and 129.7 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:45,632 INFO L168 Benchmark]: Boogie Preprocessor took 55.87 ms. Allocated memory is still 168.8 MB. Free memory was 129.7 MB in the beginning and 127.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:45,633 INFO L168 Benchmark]: RCFGBuilder took 735.83 ms. Allocated memory is still 168.8 MB. Free memory was 127.4 MB in the beginning and 136.1 MB in the end (delta: -8.7 MB). Peak memory consumption was 17.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:45,634 INFO L168 Benchmark]: TraceAbstraction took 1486.21 ms. Allocated memory was 168.8 MB in the beginning and 228.6 MB in the end (delta: 59.8 MB). Free memory was 135.6 MB in the beginning and 190.6 MB in the end (delta: -55.0 MB). Peak memory consumption was 4.3 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:45,645 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 168.8 MB. Free memory was 140.7 MB in the beginning and 140.6 MB in the end (delta: 102.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 353.24 ms. Allocated memory is still 168.8 MB. Free memory was 142.4 MB in the beginning and 129.7 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 55.87 ms. Allocated memory is still 168.8 MB. Free memory was 129.7 MB in the beginning and 127.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 735.83 ms. Allocated memory is still 168.8 MB. Free memory was 127.4 MB in the beginning and 136.1 MB in the end (delta: -8.7 MB). Peak memory consumption was 17.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1486.21 ms. Allocated memory was 168.8 MB in the beginning and 228.6 MB in the end (delta: 59.8 MB). Free memory was 135.6 MB in the beginning and 190.6 MB in the end (delta: -55.0 MB). Peak memory consumption was 4.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 146, overapproximation of someBinaryArithmeticFLOAToperation at line 118, overapproximation of bitwiseAnd at line 117. Possible FailurePath: [L13-L17] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L19] static const float zero_log = 0.0; [L99-L102] static const float two25_log10 = 3.3554432000e+07, ivln10_log10 = 4.3429449201e-01, log10_2hi_log10 = 3.0102920532e-01, log10_2lo_log10 = 7.9034151668e-07; [L104] static const float zero = 0.0; [L155] float x = 0.0f / 0.0f; [L156] CALL, EXPR __ieee754_log10f(x) [L107] float y, z; [L108] __int32_t i, k, hx; [L111] ieee_float_shape_type gf_u; [L112] gf_u.value = (x) [L113] EXPR gf_u.word [L113] (hx) = gf_u.word [L116] k = 0 [L117] COND TRUE ((hx & 0x7fffffff) == 0) [L118] return -two25_log10 / zero; [L156] RET, EXPR __ieee754_log10f(x) [L156] float res = __ieee754_log10f(x); [L159] CALL, EXPR isnan_float(res) [L146] return x != x; [L159] RET, EXPR isnan_float(res) [L159] COND TRUE !isnan_float(res) [L160] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0971.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 72 SDtfs, 12 SDslu, 58 SDs, 0 SdLazy, 71 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred 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, 0.4s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 2331 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...