/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_0661a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:08:10,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:08:10,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:08:10,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:08:10,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:08:10,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:08:10,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:08:10,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:08:10,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:08:10,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:08:10,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:08:10,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:08:10,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:08:10,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:08:10,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:08:10,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:08:10,311 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:08:10,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:08:10,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:08:10,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:08:10,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:08:10,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:08:10,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:08:10,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:08:10,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:08:10,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:08:10,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:08:10,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:08:10,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:08:10,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:08:10,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:08:10,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:08:10,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:08:10,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:08:10,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:08:10,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:08:10,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:08:10,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:08:10,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:08:10,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:08:10,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:08:10,355 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 09:08:10,401 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:08:10,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:08:10,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:08:10,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:08:10,406 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:08:10,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:08:10,407 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:08:10,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:08:10,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:08:10,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:08:10,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:08:10,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:08:10,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:08:10,409 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:08:10,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:08:10,409 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:08:10,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:08:10,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:08:10,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:08:10,410 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:08:10,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:08:10,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:08:10,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:08:10,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:08:10,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:08:10,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:08:10,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:08:10,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:08:10,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:08:10,412 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:08:10,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:08:10,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:08:10,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:08:10,847 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:08:10,851 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:08:10,852 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0661a.c [2020-10-29 09:08:10,943 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee4289dea/fd4a3078f5304558afbf2ae2e8a7ca11/FLAG96b4d5e63 [2020-10-29 09:08:11,668 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:08:11,672 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0661a.c [2020-10-29 09:08:11,686 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee4289dea/fd4a3078f5304558afbf2ae2e8a7ca11/FLAG96b4d5e63 [2020-10-29 09:08:11,970 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee4289dea/fd4a3078f5304558afbf2ae2e8a7ca11 [2020-10-29 09:08:11,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:08:11,981 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:08:11,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:08:11,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:08:11,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:08:11,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:08:11" (1/1) ... [2020-10-29 09:08:12,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ce40035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:11, skipping insertion in model container [2020-10-29 09:08:12,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:08:11" (1/1) ... [2020-10-29 09:08:12,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:08:12,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:08:12,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:08:12,305 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:08:12,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:08:12,398 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:08:12,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:12 WrapperNode [2020-10-29 09:08:12,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:08:12,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:08:12,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:08:12,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:08:12,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:12" (1/1) ... [2020-10-29 09:08:12,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:12" (1/1) ... [2020-10-29 09:08:12,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:12" (1/1) ... [2020-10-29 09:08:12,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:12" (1/1) ... [2020-10-29 09:08:12,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:12" (1/1) ... [2020-10-29 09:08:12,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:12" (1/1) ... [2020-10-29 09:08:12,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:12" (1/1) ... [2020-10-29 09:08:12,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:08:12,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:08:12,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:08:12,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:08:12,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:12" (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 09:08:12,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:08:12,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:08:12,551 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:08:12,551 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-29 09:08:12,551 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-29 09:08:12,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2f [2020-10-29 09:08:12,552 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:08:12,552 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:08:12,552 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:08:12,552 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:08:12,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:08:12,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-29 09:08:12,553 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-29 09:08:12,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-29 09:08:12,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:08:12,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:08:12,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:08:12,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-29 09:08:12,554 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-29 09:08:12,554 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2f [2020-10-29 09:08:12,554 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:08:12,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:08:12,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:08:12,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-29 09:08:12,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:08:13,403 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:08:13,404 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-29 09:08:13,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:08:13 BoogieIcfgContainer [2020-10-29 09:08:13,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:08:13,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:08:13,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:08:13,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:08:13,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:08:11" (1/3) ... [2020-10-29 09:08:13,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602b0ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:08:13, skipping insertion in model container [2020-10-29 09:08:13,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:12" (2/3) ... [2020-10-29 09:08:13,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602b0ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:08:13, skipping insertion in model container [2020-10-29 09:08:13,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:08:13" (3/3) ... [2020-10-29 09:08:13,416 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0661a.c [2020-10-29 09:08:13,430 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:08:13,436 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:08:13,454 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:08:13,501 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:08:13,502 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:08:13,502 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:08:13,502 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:08:13,502 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:08:13,502 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:08:13,502 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:08:13,503 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:08:13,531 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2020-10-29 09:08:13,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 09:08:13,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:13,544 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 09:08:13,545 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:13,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:13,554 INFO L82 PathProgramCache]: Analyzing trace with hash -36538095, now seen corresponding path program 1 times [2020-10-29 09:08:13,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:13,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912790725] [2020-10-29 09:08:13,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:13,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:13,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:14,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:14,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:14,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 09:08:14,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:08:14,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-29 09:08:14,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:14,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:14,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:14,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 09:08:14,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:14,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:08:14,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:08:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:14,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:14,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:14,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:08:14,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:14,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 09:08:14,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:14,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:14,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:14,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:08:14,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:14,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:08:14,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:08:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:14,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:14,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:14,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:14,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 09:08:14,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:08:14,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 09:08:14,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:14,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:14,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:14,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:08:14,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:14,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:08:14,455 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 09:08:14,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912790725] [2020-10-29 09:08:14,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:08:14,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:08:14,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508135353] [2020-10-29 09:08:14,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:08:14,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:08:14,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:08:14,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:08:14,483 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 4 states. [2020-10-29 09:08:14,623 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-29 09:08:15,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:08:15,042 INFO L93 Difference]: Finished difference Result 201 states and 315 transitions. [2020-10-29 09:08:15,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:08:15,044 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-29 09:08:15,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:08:15,056 INFO L225 Difference]: With dead ends: 201 [2020-10-29 09:08:15,056 INFO L226 Difference]: Without dead ends: 97 [2020-10-29 09:08:15,061 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 09:08:15,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-29 09:08:15,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-29 09:08:15,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-29 09:08:15,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 136 transitions. [2020-10-29 09:08:15,122 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 136 transitions. Word has length 20 [2020-10-29 09:08:15,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:08:15,123 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 136 transitions. [2020-10-29 09:08:15,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:08:15,123 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 136 transitions. [2020-10-29 09:08:15,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 09:08:15,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:15,125 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 09:08:15,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:08:15,125 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:15,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:15,126 INFO L82 PathProgramCache]: Analyzing trace with hash 972539240, now seen corresponding path program 1 times [2020-10-29 09:08:15,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:15,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486317634] [2020-10-29 09:08:15,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:08:15,187 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:08:15,188 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:08:15,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:08:15,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:08:15 BoogieIcfgContainer [2020-10-29 09:08:15,211 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:08:15,214 INFO L168 Benchmark]: Toolchain (without parser) took 3236.96 ms. Allocated memory was 159.4 MB in the beginning and 213.9 MB in the end (delta: 54.5 MB). Free memory was 134.0 MB in the beginning and 129.7 MB in the end (delta: 4.3 MB). Peak memory consumption was 59.3 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:15,214 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 159.4 MB. Free memory is still 130.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:08:15,215 INFO L168 Benchmark]: CACSL2BoogieTranslator took 417.26 ms. Allocated memory is still 159.4 MB. Free memory was 133.3 MB in the beginning and 119.4 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:15,216 INFO L168 Benchmark]: Boogie Preprocessor took 74.09 ms. Allocated memory is still 159.4 MB. Free memory was 119.4 MB in the beginning and 116.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:15,217 INFO L168 Benchmark]: RCFGBuilder took 928.68 ms. Allocated memory is still 159.4 MB. Free memory was 116.7 MB in the beginning and 115.9 MB in the end (delta: 773.7 kB). Peak memory consumption was 18.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:15,218 INFO L168 Benchmark]: TraceAbstraction took 1803.25 ms. Allocated memory was 159.4 MB in the beginning and 213.9 MB in the end (delta: 54.5 MB). Free memory was 115.4 MB in the beginning and 129.7 MB in the end (delta: -14.3 MB). Peak memory consumption was 39.7 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:15,222 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 159.4 MB. Free memory is still 130.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 417.26 ms. Allocated memory is still 159.4 MB. Free memory was 133.3 MB in the beginning and 119.4 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 74.09 ms. Allocated memory is still 159.4 MB. Free memory was 119.4 MB in the beginning and 116.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 928.68 ms. Allocated memory is still 159.4 MB. Free memory was 116.7 MB in the beginning and 115.9 MB in the end (delta: 773.7 kB). Peak memory consumption was 18.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1803.25 ms. Allocated memory was 159.4 MB in the beginning and 213.9 MB in the end (delta: 54.5 MB). Free memory was 115.4 MB in the beginning and 129.7 MB in the end (delta: -14.3 MB). Peak memory consumption was 39.7 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 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 [L227] 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; [L227] RET, EXPR __ieee754_atan2f(y, x) [L227] float res = __ieee754_atan2f(y, x); [L229] COND TRUE res != -0.0f [L230] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0661a.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: 1.6s, 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...