/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_0680b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:27:59,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:27:59,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:27:59,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:27:59,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:27:59,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:27:59,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:27:59,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:27:59,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:27:59,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:27:59,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:27:59,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:27:59,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:27:59,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:27:59,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:27:59,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:27:59,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:27:59,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:27:59,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:27:59,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:27:59,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:27:59,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:27:59,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:27:59,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:27:59,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:27:59,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:27:59,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:27:59,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:27:59,228 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:27:59,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:27:59,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:27:59,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:27:59,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:27:59,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:27:59,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:27:59,235 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:27:59,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:27:59,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:27:59,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:27:59,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:27:59,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:27:59,245 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 14:27:59,302 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:27:59,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:27:59,307 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:27:59,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:27:59,308 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:27:59,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:27:59,308 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:27:59,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:27:59,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:27:59,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:27:59,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:27:59,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:27:59,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:27:59,311 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:27:59,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:27:59,311 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:27:59,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:27:59,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:27:59,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:27:59,312 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:27:59,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:27:59,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:27:59,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:27:59,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:27:59,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:27:59,313 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:27:59,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:27:59,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:27:59,314 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:27:59,314 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:27:59,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:27:59,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:27:59,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:27:59,752 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:27:59,757 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:27:59,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0680b.c [2020-10-28 14:27:59,853 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e318bd63/32c6f532ad4842398cb962562e5aec02/FLAG72bbbbc06 [2020-10-28 14:28:00,611 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:28:00,611 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0680b.c [2020-10-28 14:28:00,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e318bd63/32c6f532ad4842398cb962562e5aec02/FLAG72bbbbc06 [2020-10-28 14:28:00,938 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e318bd63/32c6f532ad4842398cb962562e5aec02 [2020-10-28 14:28:00,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:28:00,949 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:28:00,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:28:00,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:28:00,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:28:00,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:28:00" (1/1) ... [2020-10-28 14:28:00,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@669fab04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:00, skipping insertion in model container [2020-10-28 14:28:00,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:28:00" (1/1) ... [2020-10-28 14:28:00,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:28:01,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:28:01,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:28:01,258 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:28:01,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:28:01,418 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:28:01,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:01 WrapperNode [2020-10-28 14:28:01,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:28:01,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:28:01,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:28:01,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:28:01,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:01" (1/1) ... [2020-10-28 14:28:01,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:01" (1/1) ... [2020-10-28 14:28:01,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:01" (1/1) ... [2020-10-28 14:28:01,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:01" (1/1) ... [2020-10-28 14:28:01,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:01" (1/1) ... [2020-10-28 14:28:01,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:01" (1/1) ... [2020-10-28 14:28:01,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:01" (1/1) ... [2020-10-28 14:28:01,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:28:01,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:28:01,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:28:01,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:28:01,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:01" (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 14:28:01,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:28:01,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:28:01,585 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:28:01,585 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-28 14:28:01,586 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-28 14:28:01,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2f [2020-10-28 14:28:01,586 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:28:01,586 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:28:01,586 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:28:01,586 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:28:01,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:28:01,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-28 14:28:01,587 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-28 14:28:01,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:28:01,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:28:01,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:28:01,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:28:01,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:28:01,588 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-28 14:28:01,588 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2f [2020-10-28 14:28:01,588 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:28:01,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:28:01,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:28:01,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-28 14:28:01,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:28:02,369 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:28:02,369 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-28 14:28:02,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:28:02 BoogieIcfgContainer [2020-10-28 14:28:02,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:28:02,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:28:02,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:28:02,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:28:02,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:28:00" (1/3) ... [2020-10-28 14:28:02,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4aaf0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:28:02, skipping insertion in model container [2020-10-28 14:28:02,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:01" (2/3) ... [2020-10-28 14:28:02,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4aaf0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:28:02, skipping insertion in model container [2020-10-28 14:28:02,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:28:02" (3/3) ... [2020-10-28 14:28:02,381 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0680b.c [2020-10-28 14:28:02,393 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:28:02,399 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:28:02,413 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:28:02,442 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:28:02,442 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:28:02,442 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:28:02,442 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:28:02,442 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:28:02,443 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:28:02,443 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:28:02,443 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:28:02,463 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-10-28 14:28:02,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 14:28:02,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:28:02,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:28:02,472 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:28:02,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:28:02,479 INFO L82 PathProgramCache]: Analyzing trace with hash -2093410893, now seen corresponding path program 1 times [2020-10-28 14:28:02,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:28:02,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72306582] [2020-10-28 14:28:02,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:28:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:02,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:02,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:03,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:03,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 14:28:03,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:28:03,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-28 14:28:03,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:03,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:03,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:03,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 14:28:03,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:03,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:28:03,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:28:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:03,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:03,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:03,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:28:03,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:28:03,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 14:28:03,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:03,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:03,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:03,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:28:03,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:03,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:03,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:28:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:03,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:03,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:03,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:03,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:28:03,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:28:03,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 14:28:03,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:03,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:03,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:03,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:28:03,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:03,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:03,343 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 14:28:03,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72306582] [2020-10-28 14:28:03,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:28:03,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:28:03,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804882561] [2020-10-28 14:28:03,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:28:03,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:28:03,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:28:03,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:28:03,376 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 4 states. [2020-10-28 14:28:03,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:28:03,931 INFO L93 Difference]: Finished difference Result 195 states and 308 transitions. [2020-10-28 14:28:03,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:28:03,933 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-28 14:28:03,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:28:03,945 INFO L225 Difference]: With dead ends: 195 [2020-10-28 14:28:03,945 INFO L226 Difference]: Without dead ends: 96 [2020-10-28 14:28:03,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:28:03,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-28 14:28:04,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-28 14:28:04,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-28 14:28:04,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 135 transitions. [2020-10-28 14:28:04,016 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 135 transitions. Word has length 19 [2020-10-28 14:28:04,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:28:04,017 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 135 transitions. [2020-10-28 14:28:04,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:28:04,017 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 135 transitions. [2020-10-28 14:28:04,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 14:28:04,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:28:04,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:28:04,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:28:04,019 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:28:04,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:28:04,020 INFO L82 PathProgramCache]: Analyzing trace with hash 2002604426, now seen corresponding path program 1 times [2020-10-28 14:28:04,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:28:04,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541754110] [2020-10-28 14:28:04,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:28:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:28:04,075 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:28:04,075 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:28:04,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:28:04,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:28:04 BoogieIcfgContainer [2020-10-28 14:28:04,099 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:28:04,102 INFO L168 Benchmark]: Toolchain (without parser) took 3157.51 ms. Allocated memory is still 152.0 MB. Free memory was 126.8 MB in the beginning and 81.5 MB in the end (delta: 45.3 MB). Peak memory consumption was 46.2 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:04,103 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 125.8 MB. Free memory is still 84.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:28:04,104 INFO L168 Benchmark]: CACSL2BoogieTranslator took 469.90 ms. Allocated memory is still 152.0 MB. Free memory was 126.2 MB in the beginning and 112.6 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:04,105 INFO L168 Benchmark]: Boogie Preprocessor took 74.92 ms. Allocated memory is still 152.0 MB. Free memory was 112.6 MB in the beginning and 109.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:04,105 INFO L168 Benchmark]: RCFGBuilder took 873.99 ms. Allocated memory is still 152.0 MB. Free memory was 109.7 MB in the beginning and 122.3 MB in the end (delta: -12.7 MB). Peak memory consumption was 31.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:04,106 INFO L168 Benchmark]: TraceAbstraction took 1726.13 ms. Allocated memory is still 152.0 MB. Free memory was 121.8 MB in the beginning and 81.5 MB in the end (delta: 40.3 MB). Peak memory consumption was 39.8 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:04,110 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 125.8 MB. Free memory is still 84.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 469.90 ms. Allocated memory is still 152.0 MB. Free memory was 126.2 MB in the beginning and 112.6 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 74.92 ms. Allocated memory is still 152.0 MB. Free memory was 112.6 MB in the beginning and 109.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 873.99 ms. Allocated memory is still 152.0 MB. Free memory was 109.7 MB in the beginning and 122.3 MB in the end (delta: -12.7 MB). Peak memory consumption was 31.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1726.13 ms. Allocated memory is still 152.0 MB. Free memory was 121.8 MB in the beginning and 81.5 MB in the end (delta: 40.3 MB). Peak memory consumption was 39.8 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 229, overapproximation of someUnaryDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 135, overapproximation of someUnaryFLOAToperation at line 223, overapproximation of someBinaryArithmeticFLOAToperation at line 137. Possible FailurePath: [L29-L34] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L36-L41] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L43-L47] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L49-L51] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L117-L118] static const float tiny_atan2 = 1.0e-30, zero_atan2 = 0.0, pi_lo_atan2 = -8.7422776573e-08; [L223] float x = -0.0f; [L224] float y = -0.0f; [L226] CALL, EXPR __ieee754_atan2f(y, x) [L121] float z; [L122] __int32_t k, m, hx, hy, ix, iy; [L125] ieee_float_shape_type gf_u; [L126] gf_u.value = (x) [L127] EXPR gf_u.word [L127] (hx) = gf_u.word [L129] ix = hx & 0x7fffffff [L131] ieee_float_shape_type gf_u; [L132] gf_u.value = (y) [L133] EXPR gf_u.word [L133] (hy) = gf_u.word [L135] iy = hy & 0x7fffffff [L136] COND TRUE ((ix) > 0x7f800000L) || ((iy) > 0x7f800000L) [L137] return x + y; [L226] RET, EXPR __ieee754_atan2f(y, x) [L226] float res = __ieee754_atan2f(y, x); [L229] COND TRUE res != -pi [L230] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0680b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 103 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 10 SDslu, 124 SDs, 0 SdLazy, 132 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred 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, 0.6s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 1836 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...