/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=NARROWEST --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 -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0270a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:19:16,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:19:16,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:19:16,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:19:16,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:19:16,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:19:16,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:19:16,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:19:16,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:19:16,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:19:16,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:19:16,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:19:16,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:19:16,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:19:16,371 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:19:16,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:19:16,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:19:16,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:19:16,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:19:16,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:19:16,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:19:16,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:19:16,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:19:16,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:19:16,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:19:16,384 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:19:16,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:19:16,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:19:16,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:19:16,387 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:19:16,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:19:16,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:19:16,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:19:16,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:19:16,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:19:16,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:19:16,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:19:16,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:19:16,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:19:16,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:19:16,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:19:16,394 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 [2020-10-13 10:19:16,439 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:19:16,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:19:16,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:19:16,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:19:16,441 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:19:16,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:19:16,442 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:19:16,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:19:16,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:19:16,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:19:16,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:19:16,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:19:16,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:19:16,443 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:19:16,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:19:16,443 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:19:16,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:19:16,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:19:16,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:19:16,447 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:19:16,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:19:16,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:19:16,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:19:16,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:19:16,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:19:16,448 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:19:16,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:19:16,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:19:16,449 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:19:16,449 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:19:16,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:19:16,779 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:19:16,782 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:19:16,784 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:19:16,784 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:19:16,785 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0270a.c [2020-10-13 10:19:16,839 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45a559059/3a0bcec4de5a4bf3abd4a9ea41669802/FLAGd92d5d070 [2020-10-13 10:19:17,285 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:19:17,286 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0270a.c [2020-10-13 10:19:17,298 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45a559059/3a0bcec4de5a4bf3abd4a9ea41669802/FLAGd92d5d070 [2020-10-13 10:19:17,663 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45a559059/3a0bcec4de5a4bf3abd4a9ea41669802 [2020-10-13 10:19:17,671 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:19:17,673 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:19:17,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:19:17,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:19:17,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:19:17,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:19:17" (1/1) ... [2020-10-13 10:19:17,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f2210ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:17, skipping insertion in model container [2020-10-13 10:19:17,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:19:17" (1/1) ... [2020-10-13 10:19:17,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:19:17,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:19:17,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:19:17,933 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:19:18,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:19:18,128 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:19:18,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:18 WrapperNode [2020-10-13 10:19:18,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:19:18,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:19:18,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:19:18,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:19:18,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:18" (1/1) ... [2020-10-13 10:19:18,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:18" (1/1) ... [2020-10-13 10:19:18,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:18" (1/1) ... [2020-10-13 10:19:18,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:18" (1/1) ... [2020-10-13 10:19:18,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:18" (1/1) ... [2020-10-13 10:19:18,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:18" (1/1) ... [2020-10-13 10:19:18,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:18" (1/1) ... [2020-10-13 10:19:18,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:19:18,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:19:18,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:19:18,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:19:18,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:18" (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 [2020-10-13 10:19:18,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:19:18,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:19:18,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-13 10:19:18,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-10-13 10:19:18,252 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-13 10:19:18,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_asinf [2020-10-13 10:19:18,252 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:19:18,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:19:18,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-13 10:19:18,252 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-13 10:19:18,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:19:18,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 10:19:18,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:19:18,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:19:18,253 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-10-13 10:19:18,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:19:18,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 10:19:18,254 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-13 10:19:18,254 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_asinf [2020-10-13 10:19:18,254 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:19:18,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:19:18,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:19:18,781 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:19:18,782 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-13 10:19:18,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:19:18 BoogieIcfgContainer [2020-10-13 10:19:18,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:19:18,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:19:18,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:19:18,791 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:19:18,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:19:17" (1/3) ... [2020-10-13 10:19:18,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3172c296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:19:18, skipping insertion in model container [2020-10-13 10:19:18,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:18" (2/3) ... [2020-10-13 10:19:18,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3172c296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:19:18, skipping insertion in model container [2020-10-13 10:19:18,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:19:18" (3/3) ... [2020-10-13 10:19:18,795 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0270a.c [2020-10-13 10:19:18,805 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:19:18,813 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:19:18,827 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:19:18,853 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:19:18,853 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:19:18,853 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:19:18,853 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:19:18,854 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:19:18,854 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:19:18,854 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:19:18,854 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:19:18,873 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-10-13 10:19:18,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-13 10:19:18,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:19:18,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:19:18,881 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:19:18,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:19:18,888 INFO L82 PathProgramCache]: Analyzing trace with hash -874682043, now seen corresponding path program 1 times [2020-10-13 10:19:18,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:19:18,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180321611] [2020-10-13 10:19:18,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:19:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:19,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:19,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:19,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 10:19:19,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:19,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-13 10:19:19,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:19,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:19,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 10:19:19,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:19,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 10:19:19,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:19:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:19,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:19,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:19,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:19:19,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:19,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 10:19:19,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:19,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:19,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:19:19,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:19,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:19:19,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:19:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:19,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:19,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:19,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:19:19,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:19,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 10:19:19,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:19,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:19,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:19:19,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:19,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:19:19,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:19:19,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180321611] [2020-10-13 10:19:19,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:19:19,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:19:19,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823242667] [2020-10-13 10:19:19,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:19:19,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:19:19,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:19:19,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:19:19,437 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 4 states. [2020-10-13 10:19:19,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:19:19,890 INFO L93 Difference]: Finished difference Result 152 states and 229 transitions. [2020-10-13 10:19:19,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:19:19,893 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-13 10:19:19,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:19:19,904 INFO L225 Difference]: With dead ends: 152 [2020-10-13 10:19:19,904 INFO L226 Difference]: Without dead ends: 76 [2020-10-13 10:19:19,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:19:19,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-13 10:19:19,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-13 10:19:19,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-13 10:19:19,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 94 transitions. [2020-10-13 10:19:19,961 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 94 transitions. Word has length 17 [2020-10-13 10:19:19,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:19:19,962 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 94 transitions. [2020-10-13 10:19:19,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:19:19,962 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 94 transitions. [2020-10-13 10:19:19,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-13 10:19:19,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:19:19,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:19:19,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:19:19,964 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:19:19,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:19:19,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1166852346, now seen corresponding path program 1 times [2020-10-13 10:19:19,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:19:19,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083840607] [2020-10-13 10:19:19,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:19:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:19:20,012 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:19:20,012 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:19:20,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:19:20,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:19:20 BoogieIcfgContainer [2020-10-13 10:19:20,050 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:19:20,054 INFO L168 Benchmark]: Toolchain (without parser) took 2379.14 ms. Allocated memory was 143.7 MB in the beginning and 234.9 MB in the end (delta: 91.2 MB). Free memory was 102.9 MB in the beginning and 148.4 MB in the end (delta: -45.5 MB). Peak memory consumption was 45.7 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:20,056 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 143.7 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-13 10:19:20,057 INFO L168 Benchmark]: CACSL2BoogieTranslator took 454.83 ms. Allocated memory was 143.7 MB in the beginning and 203.9 MB in the end (delta: 60.3 MB). Free memory was 102.7 MB in the beginning and 179.0 MB in the end (delta: -76.3 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:20,058 INFO L168 Benchmark]: Boogie Preprocessor took 58.06 ms. Allocated memory is still 203.9 MB. Free memory was 179.0 MB in the beginning and 176.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:20,059 INFO L168 Benchmark]: RCFGBuilder took 598.73 ms. Allocated memory is still 203.9 MB. Free memory was 176.3 MB in the beginning and 141.8 MB in the end (delta: 34.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:20,061 INFO L168 Benchmark]: TraceAbstraction took 1262.51 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 141.8 MB in the beginning and 148.4 MB in the end (delta: -6.6 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:20,071 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 143.7 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 454.83 ms. Allocated memory was 143.7 MB in the beginning and 203.9 MB in the end (delta: 60.3 MB). Free memory was 102.7 MB in the beginning and 179.0 MB in the end (delta: -76.3 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.06 ms. Allocated memory is still 203.9 MB. Free memory was 179.0 MB in the beginning and 176.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 598.73 ms. Allocated memory is still 203.9 MB. Free memory was 176.3 MB in the beginning and 141.8 MB in the end (delta: 34.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1262.51 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 141.8 MB in the beginning and 148.4 MB in the end (delta: -6.6 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 198]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 197, overapproximation of someUnaryDOUBLEoperation at line 111, overapproximation of bitwiseAnd at line 125, overapproximation of someUnaryFLOAToperation at line 193, overapproximation of someBinaryArithmeticFLOAToperation at line 128. Possible FailurePath: [L24] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L107-L115] static const float one_asin = 1.0000000000e+00, huge_asin = 1.000e+30, pio2_hi_asin = 1.57079637050628662109375f, pio2_lo_asin = -4.37113900018624283e-8f, pio4_hi_asin = 0.785398185253143310546875f, pS0_asin = 1.6666667163e-01, pS1_asin = -3.2556581497e-01, pS2_asin = 2.0121252537e-01, pS3_asin = -4.0055535734e-02, pS4_asin = 7.9153501429e-04, pS5_asin = 3.4793309169e-05, qS1_asin = -2.4033949375e+00, qS2_asin = 2.0209457874e+00, qS3_asin = -6.8828397989e-01, qS4_asin = 7.7038154006e-02; [L193] float x = -0.0f; [L194] CALL, EXPR __ieee754_asinf(x) [L118] float t, w, p, q, c, r, s; [L119] __int32_t hx, ix; [L121] ieee_float_shape_type gf_u; [L122] gf_u.value = (x) [L123] EXPR gf_u.word [L123] (hx) = gf_u.word [L125] ix = hx & 0x7fffffff [L126] COND TRUE ix == 0x3f800000 [L128] return x * pio2_hi_asin + x * pio2_lo_asin; [L194] RET, EXPR __ieee754_asinf(x) [L194] float res = __ieee754_asinf(x); [L197] EXPR res == -0.0f && __signbit_float(res) == 1 [L197] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L198] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 85 SDtfs, 80 SDslu, 5 SDs, 0 SdLazy, 100 SolverSat, 22 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 1408 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...