/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_0660a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:08:06,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:08:06,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:08:06,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:08:06,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:08:06,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:08:06,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:08:06,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:08:06,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:08:06,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:08:06,235 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:08:06,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:08:06,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:08:06,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:08:06,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:08:06,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:08:06,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:08:06,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:08:06,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:08:06,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:08:06,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:08:06,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:08:06,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:08:06,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:08:06,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:08:06,280 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:08:06,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:08:06,282 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:08:06,283 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:08:06,284 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:08:06,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:08:06,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:08:06,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:08:06,288 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:08:06,289 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:08:06,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:08:06,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:08:06,290 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:08:06,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:08:06,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:08:06,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:08:06,299 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 09:08:06,352 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:08:06,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:08:06,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:08:06,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:08:06,357 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:08:06,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:08:06,358 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:08:06,358 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:08:06,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:08:06,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:08:06,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:08:06,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:08:06,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:08:06,360 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:08:06,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:08:06,360 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:08:06,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:08:06,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:08:06,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:08:06,361 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:08:06,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:08:06,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:08:06,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:08:06,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:08:06,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:08:06,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:08:06,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:08:06,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:08:06,363 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:08:06,363 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:08:06,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:08:06,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:08:06,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:08:06,800 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:08:06,801 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:08:06,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0660a.c [2020-10-29 09:08:06,878 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9263a2d8/3681af7377fc422687e6bb8a682ac11e/FLAG8d6284230 [2020-10-29 09:08:07,435 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:08:07,436 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0660a.c [2020-10-29 09:08:07,445 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9263a2d8/3681af7377fc422687e6bb8a682ac11e/FLAG8d6284230 [2020-10-29 09:08:07,786 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9263a2d8/3681af7377fc422687e6bb8a682ac11e [2020-10-29 09:08:07,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:08:07,798 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:08:07,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:08:07,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:08:07,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:08:07,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:08:07" (1/1) ... [2020-10-29 09:08:07,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c15dc59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:07, skipping insertion in model container [2020-10-29 09:08:07,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:08:07" (1/1) ... [2020-10-29 09:08:07,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:08:07,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:08:08,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:08:08,134 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:08:08,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:08:08,280 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:08:08,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:08 WrapperNode [2020-10-29 09:08:08,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:08:08,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:08:08,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:08:08,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:08:08,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:08" (1/1) ... [2020-10-29 09:08:08,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:08" (1/1) ... [2020-10-29 09:08:08,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:08" (1/1) ... [2020-10-29 09:08:08,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:08" (1/1) ... [2020-10-29 09:08:08,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:08" (1/1) ... [2020-10-29 09:08:08,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:08" (1/1) ... [2020-10-29 09:08:08,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:08" (1/1) ... [2020-10-29 09:08:08,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:08:08,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:08:08,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:08:08,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:08:08,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:08" (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 09:08:08,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:08:08,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:08:08,437 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:08:08,437 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-29 09:08:08,437 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-29 09:08:08,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2f [2020-10-29 09:08:08,438 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:08:08,438 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:08:08,438 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:08:08,438 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:08:08,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:08:08,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-29 09:08:08,439 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-29 09:08:08,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-29 09:08:08,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:08:08,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:08:08,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:08:08,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-29 09:08:08,440 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-29 09:08:08,442 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2f [2020-10-29 09:08:08,443 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:08:08,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:08:08,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:08:08,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-29 09:08:08,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:08:09,114 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:08:09,114 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-29 09:08:09,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:08:09 BoogieIcfgContainer [2020-10-29 09:08:09,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:08:09,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:08:09,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:08:09,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:08:09,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:08:07" (1/3) ... [2020-10-29 09:08:09,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76143ad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:08:09, skipping insertion in model container [2020-10-29 09:08:09,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:08" (2/3) ... [2020-10-29 09:08:09,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76143ad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:08:09, skipping insertion in model container [2020-10-29 09:08:09,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:08:09" (3/3) ... [2020-10-29 09:08:09,127 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0660a.c [2020-10-29 09:08:09,141 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:08:09,146 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:08:09,160 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:08:09,188 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:08:09,189 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:08:09,189 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:08:09,189 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:08:09,189 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:08:09,189 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:08:09,189 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:08:09,190 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:08:09,213 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2020-10-29 09:08:09,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 09:08:09,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:09,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:08:09,221 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:09,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:09,228 INFO L82 PathProgramCache]: Analyzing trace with hash -36538095, now seen corresponding path program 1 times [2020-10-29 09:08:09,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:09,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711879407] [2020-10-29 09:08:09,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:09,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:09,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:09,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:09,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 09:08:09,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:08:09,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-10-29 09:08:09,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:09,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:09,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:09,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 09:08:09,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:09,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:08:09,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:08:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:09,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:09,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:09,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:08:09,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:09,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 09:08:09,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:09,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:09,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:09,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:08:09,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:09,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:08:10,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:08:10,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:10,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:10,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:10,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:10,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 09:08:10,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:08:10,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 09:08:10,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:10,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:10,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:10,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:08:10,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:10,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:08:10,041 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 09:08:10,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711879407] [2020-10-29 09:08:10,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:08:10,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:08:10,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569916227] [2020-10-29 09:08:10,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:08:10,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:08:10,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:08:10,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:08:10,066 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 4 states. [2020-10-29 09:08:10,197 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-29 09:08:10,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:08:10,559 INFO L93 Difference]: Finished difference Result 201 states and 315 transitions. [2020-10-29 09:08:10,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:08:10,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-29 09:08:10,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:08:10,571 INFO L225 Difference]: With dead ends: 201 [2020-10-29 09:08:10,572 INFO L226 Difference]: Without dead ends: 97 [2020-10-29 09:08:10,576 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 [2020-10-29 09:08:10,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-29 09:08:10,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-29 09:08:10,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-29 09:08:10,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 136 transitions. [2020-10-29 09:08:10,632 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 136 transitions. Word has length 20 [2020-10-29 09:08:10,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:08:10,633 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 136 transitions. [2020-10-29 09:08:10,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:08:10,633 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 136 transitions. [2020-10-29 09:08:10,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 09:08:10,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:10,634 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 09:08:10,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:08:10,635 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:10,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:10,636 INFO L82 PathProgramCache]: Analyzing trace with hash 972539240, now seen corresponding path program 1 times [2020-10-29 09:08:10,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:10,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799976469] [2020-10-29 09:08:10,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:08:10,719 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:08:10,720 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:08:10,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:08:10,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:08:10 BoogieIcfgContainer [2020-10-29 09:08:10,746 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:08:10,748 INFO L168 Benchmark]: Toolchain (without parser) took 2954.45 ms. Allocated memory is still 159.4 MB. Free memory was 135.2 MB in the beginning and 71.0 MB in the end (delta: 64.2 MB). Peak memory consumption was 65.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:10,754 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 125.8 MB. Free memory is still 106.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:08:10,755 INFO L168 Benchmark]: CACSL2BoogieTranslator took 478.06 ms. Allocated memory is still 159.4 MB. Free memory was 134.6 MB in the beginning and 120.5 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:10,756 INFO L168 Benchmark]: Boogie Preprocessor took 69.41 ms. Allocated memory is still 159.4 MB. Free memory was 120.5 MB in the beginning and 117.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:10,757 INFO L168 Benchmark]: RCFGBuilder took 763.94 ms. Allocated memory is still 159.4 MB. Free memory was 117.7 MB in the beginning and 106.5 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.3 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:10,758 INFO L168 Benchmark]: TraceAbstraction took 1626.23 ms. Allocated memory is still 159.4 MB. Free memory was 106.0 MB in the beginning and 71.0 MB in the end (delta: 35.0 MB). Peak memory consumption was 35.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:10,761 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 125.8 MB. Free memory is still 106.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 478.06 ms. Allocated memory is still 159.4 MB. Free memory was 134.6 MB in the beginning and 120.5 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 69.41 ms. Allocated memory is still 159.4 MB. Free memory was 120.5 MB in the beginning and 117.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 763.94 ms. Allocated memory is still 159.4 MB. Free memory was 117.7 MB in the beginning and 106.5 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1626.23 ms. Allocated memory is still 159.4 MB. Free memory was 106.0 MB in the beginning and 71.0 MB in the end (delta: 35.0 MB). Peak memory consumption was 35.0 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 231, overapproximation of someUnaryDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 135, overapproximation of someUnaryFLOAToperation at line 219, 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; [L218] float x = __VERIFIER_nondet_float(); [L219] float y = -0.0f; [L226] COND TRUE x < 0.0f && y == -0.0f [L228] 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; [L228] RET, EXPR __ieee754_atan2f(y, x) [L228] float res = __ieee754_atan2f(y, x); [L231] COND TRUE res != -pi [L232] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0660a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 105 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 138 SDtfs, 18 SDslu, 123 SDs, 0 SdLazy, 135 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=105occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 1957 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...