/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_0681a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:27:59,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:27:59,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:27:59,212 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:27:59,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:27:59,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:27:59,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:27:59,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:27:59,221 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:27:59,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:27:59,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:27:59,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:27:59,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:27:59,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:27:59,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:27:59,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:27:59,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:27:59,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:27:59,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:27:59,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:27:59,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:27:59,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:27:59,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:27:59,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:27:59,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:27:59,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:27:59,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:27:59,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:27:59,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:27:59,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:27:59,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:27:59,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:27:59,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:27:59,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:27:59,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:27:59,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:27:59,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:27:59,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:27:59,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:27:59,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:27:59,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:27:59,277 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 14:27:59,343 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:27:59,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:27:59,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:27:59,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:27:59,349 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:27:59,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:27:59,349 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:27:59,350 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:27:59,350 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:27:59,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:27:59,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:27:59,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:27:59,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:27:59,351 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:27:59,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:27:59,352 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:27:59,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:27:59,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:27:59,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:27:59,352 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:27:59,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:27:59,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:27:59,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:27:59,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:27:59,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:27:59,358 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:27:59,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:27:59,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:27:59,363 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:27:59,364 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:27:59,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:27:59,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:27:59,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:27:59,841 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:27:59,842 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:27:59,844 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0681a.c [2020-10-28 14:27:59,935 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c063ac5b5/19038fe484a5466d832afe159bd827f7/FLAG01f893608 [2020-10-28 14:28:00,702 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:28:00,702 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0681a.c [2020-10-28 14:28:00,713 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c063ac5b5/19038fe484a5466d832afe159bd827f7/FLAG01f893608 [2020-10-28 14:28:01,030 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c063ac5b5/19038fe484a5466d832afe159bd827f7 [2020-10-28 14:28:01,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:28:01,045 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:28:01,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:28:01,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:28:01,052 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:28:01,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:28:01" (1/1) ... [2020-10-28 14:28:01,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fb375de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:01, skipping insertion in model container [2020-10-28 14:28:01,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:28:01" (1/1) ... [2020-10-28 14:28:01,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:28:01,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:28:01,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:28:01,389 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:28:01,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:28:01,470 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:28:01,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:01 WrapperNode [2020-10-28 14:28:01,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:28:01,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:28:01,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:28:01,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:28:01,488 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 14:28:01,488 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 14:28:01,509 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 14:28:01,509 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 14:28:01,534 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 14:28:01,545 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 14:28:01,549 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 14:28:01,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:28:01,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:28:01,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:28:01,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:28:01,559 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 14:28:01,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:28:01,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:28:01,653 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:28:01,653 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-28 14:28:01,654 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-28 14:28:01,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2f [2020-10-28 14:28:01,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-28 14:28:01,654 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:28:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:28:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:28:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:28:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:28:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-28 14:28:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-28 14:28:01,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:28:01,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:28:01,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:28:01,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:28:01,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:28:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-28 14:28:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2f [2020-10-28 14:28:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-28 14:28:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:28:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:28:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:28:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-28 14:28:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:28:02,422 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:28:02,423 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-28 14:28:02,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:28:02 BoogieIcfgContainer [2020-10-28 14:28:02,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:28:02,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:28:02,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:28:02,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:28:02,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:28:01" (1/3) ... [2020-10-28 14:28:02,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f78d9a 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 14:28:02,433 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 14:28:02,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f78d9a 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 14:28:02,434 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 14:28:02,435 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0681a.c [2020-10-28 14:28:02,449 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:28:02,455 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:28:02,472 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:28:02,509 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:28:02,509 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:28:02,509 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:28:02,510 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:28:02,510 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:28:02,510 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:28:02,510 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:28:02,510 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:28:02,535 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states. [2020-10-28 14:28:02,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-28 14:28:02,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:28:02,545 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] [2020-10-28 14:28:02,545 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:28:02,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:28:02,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1855715709, now seen corresponding path program 1 times [2020-10-28 14:28:02,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:28:02,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839940542] [2020-10-28 14:28:02,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:28:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:02,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:02,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:03,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:03,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 14:28:03,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:28:03,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-28 14:28:03,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:03,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:03,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:03,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 14:28:03,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:03,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 14:28:03,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:28:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:03,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:03,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:03,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:28:03,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:28:03,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 14:28:03,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:03,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:03,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:03,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:28:03,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:03,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:03,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:28:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:03,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:03,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:03,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:03,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:28:03,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:28:03,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:28:03,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:03,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:03,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:03,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:28:03,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:03,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:28:03,368 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 14:28:03,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839940542] [2020-10-28 14:28:03,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:28:03,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:28:03,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569162700] [2020-10-28 14:28:03,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:28:03,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:28:03,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:28:03,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:28:03,399 INFO L87 Difference]: Start difference. First operand 112 states. Second operand 4 states. [2020-10-28 14:28:03,555 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-28 14:28:03,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:28:03,970 INFO L93 Difference]: Finished difference Result 213 states and 333 transitions. [2020-10-28 14:28:03,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:28:03,972 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-28 14:28:03,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:28:03,983 INFO L225 Difference]: With dead ends: 213 [2020-10-28 14:28:03,983 INFO L226 Difference]: Without dead ends: 105 [2020-10-28 14:28:03,988 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 14:28:04,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-28 14:28:04,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-10-28 14:28:04,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-28 14:28:04,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 145 transitions. [2020-10-28 14:28:04,049 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 145 transitions. Word has length 20 [2020-10-28 14:28:04,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:28:04,049 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 145 transitions. [2020-10-28 14:28:04,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:28:04,050 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 145 transitions. [2020-10-28 14:28:04,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 14:28:04,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:28:04,051 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] [2020-10-28 14:28:04,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:28:04,052 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:28:04,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:28:04,053 INFO L82 PathProgramCache]: Analyzing trace with hash -328213370, now seen corresponding path program 1 times [2020-10-28 14:28:04,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:28:04,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874667437] [2020-10-28 14:28:04,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:28:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:28:04,116 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:28:04,117 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:28:04,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:28:04,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:28:04 BoogieIcfgContainer [2020-10-28 14:28:04,157 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:28:04,162 INFO L168 Benchmark]: Toolchain (without parser) took 3120.02 ms. Allocated memory was 161.5 MB in the beginning and 202.4 MB in the end (delta: 40.9 MB). Free memory was 137.2 MB in the beginning and 99.2 MB in the end (delta: 38.1 MB). Peak memory consumption was 79.2 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:04,163 INFO L168 Benchmark]: CDTParser took 0.64 ms. Allocated memory is still 161.5 MB. Free memory is still 136.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:28:04,164 INFO L168 Benchmark]: CACSL2BoogieTranslator took 423.89 ms. Allocated memory is still 161.5 MB. Free memory was 136.6 MB in the beginning and 122.6 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:04,166 INFO L168 Benchmark]: Boogie Preprocessor took 83.51 ms. Allocated memory is still 161.5 MB. Free memory was 122.6 MB in the beginning and 119.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:04,167 INFO L168 Benchmark]: RCFGBuilder took 868.18 ms. Allocated memory is still 161.5 MB. Free memory was 119.7 MB in the beginning and 117.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 20.3 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:04,168 INFO L168 Benchmark]: TraceAbstraction took 1730.08 ms. Allocated memory was 161.5 MB in the beginning and 202.4 MB in the end (delta: 40.9 MB). Free memory was 116.6 MB in the beginning and 99.2 MB in the end (delta: 17.4 MB). Peak memory consumption was 57.8 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:04,179 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.64 ms. Allocated memory is still 161.5 MB. Free memory is still 136.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 423.89 ms. Allocated memory is still 161.5 MB. Free memory was 136.6 MB in the beginning and 122.6 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 83.51 ms. Allocated memory is still 161.5 MB. Free memory was 122.6 MB in the beginning and 119.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 868.18 ms. Allocated memory is still 161.5 MB. Free memory was 119.7 MB in the beginning and 117.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 20.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1730.08 ms. Allocated memory was 161.5 MB in the beginning and 202.4 MB in the end (delta: 40.9 MB). Free memory was 116.6 MB in the beginning and 99.2 MB in the end (delta: 17.4 MB). Peak memory consumption was 57.8 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 240, overapproximation of someUnaryDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 135, overapproximation of someUnaryFLOAToperation at line 236, 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; [L235] float x = 0.0f; [L236] float y = -0.0f; [L237] 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; [L237] RET, EXPR __ieee754_atan2f(y, x) [L237] float res = __ieee754_atan2f(y, x); [L240] EXPR res == -0.0f && __signbit_float(res) == 1 [L240] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L241] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0681a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 112 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 144 SDtfs, 12 SDslu, 132 SDs, 0 SdLazy, 141 SolverSat, 16 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=112occurred 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, 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...