/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_0621b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:19:34,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:19:34,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:19:34,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:19:34,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:19:34,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:19:34,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:19:34,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:19:34,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:19:34,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:19:34,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:19:34,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:19:34,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:19:34,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:19:34,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:19:34,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:19:34,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:19:34,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:19:34,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:19:34,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:19:34,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:19:34,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:19:34,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:19:34,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:19:34,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:19:34,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:19:34,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:19:34,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:19:34,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:19:34,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:19:34,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:19:34,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:19:34,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:19:34,150 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:19:34,151 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:19:34,151 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:19:34,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:19:34,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:19:34,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:19:34,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:19:34,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:19:34,154 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 10:19:34,175 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:19:34,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:19:34,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:19:34,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:19:34,177 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:19:34,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:19:34,178 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:19:34,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:19:34,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:19:34,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:19:34,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:19:34,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:19:34,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:19:34,179 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:19:34,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:19:34,179 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:19:34,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:19:34,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:19:34,180 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:19:34,180 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:19:34,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:19:34,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:19:34,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:19:34,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:19:34,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:19:34,181 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:19:34,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:19:34,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:19:34,182 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:19:34,182 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 10:19:34,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:19:34,498 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:19:34,502 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:19:34,503 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:19:34,503 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:19:34,504 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0621b.c [2020-10-13 10:19:34,566 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d977d791/ed08f68511064583967d9c7ada96233d/FLAGfa5e0f016 [2020-10-13 10:19:34,954 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:19:34,954 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0621b.c [2020-10-13 10:19:34,962 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d977d791/ed08f68511064583967d9c7ada96233d/FLAGfa5e0f016 [2020-10-13 10:19:35,375 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d977d791/ed08f68511064583967d9c7ada96233d [2020-10-13 10:19:35,385 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:19:35,387 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:19:35,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:19:35,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:19:35,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:19:35,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:19:35" (1/1) ... [2020-10-13 10:19:35,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c23f4f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:35, skipping insertion in model container [2020-10-13 10:19:35,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:19:35" (1/1) ... [2020-10-13 10:19:35,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:19:35,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:19:35,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:19:35,725 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:19:35,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:19:35,887 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:19:35,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:35 WrapperNode [2020-10-13 10:19:35,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:19:35,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:19:35,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:19:35,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:19:35,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:35" (1/1) ... [2020-10-13 10:19:35,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:35" (1/1) ... [2020-10-13 10:19:35,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:35" (1/1) ... [2020-10-13 10:19:35,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:35" (1/1) ... [2020-10-13 10:19:35,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:35" (1/1) ... [2020-10-13 10:19:35,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:35" (1/1) ... [2020-10-13 10:19:35,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:35" (1/1) ... [2020-10-13 10:19:35,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:19:35,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:19:35,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:19:35,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:19:35,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:35" (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 10:19:36,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:19:36,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:19:36,007 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-13 10:19:36,008 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-13 10:19:36,008 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-13 10:19:36,009 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:19:36,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:19:36,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-13 10:19:36,010 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-13 10:19:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-13 10:19:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:19:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 10:19:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:19:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:19:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:19:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 10:19:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-13 10:19:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:19:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:19:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-13 10:19:36,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:19:36,454 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:19:36,454 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-13 10:19:36,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:19:36 BoogieIcfgContainer [2020-10-13 10:19:36,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:19:36,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:19:36,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:19:36,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:19:36,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:19:35" (1/3) ... [2020-10-13 10:19:36,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305b6961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:19:36, skipping insertion in model container [2020-10-13 10:19:36,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:35" (2/3) ... [2020-10-13 10:19:36,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305b6961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:19:36, skipping insertion in model container [2020-10-13 10:19:36,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:19:36" (3/3) ... [2020-10-13 10:19:36,470 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0621b.c [2020-10-13 10:19:36,481 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:19:36,489 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:19:36,503 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:19:36,521 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:19:36,522 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:19:36,522 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:19:36,522 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:19:36,522 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:19:36,522 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:19:36,522 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:19:36,523 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:19:36,540 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-10-13 10:19:36,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-13 10:19:36,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:19:36,546 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 10:19:36,546 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:19:36,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:19:36,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1201089506, now seen corresponding path program 1 times [2020-10-13 10:19:36,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:19:36,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142414488] [2020-10-13 10:19:36,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:19:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:36,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:36,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:36,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 10:19:36,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:36,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-13 10:19:36,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:36,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:36,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 10:19:36,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:36,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:19:36,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:19:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:36,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:37,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:37,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:19:37,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:37,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 10:19:37,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:37,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:37,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:19:37,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:37,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:19:37,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:19:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:19:37,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:19:37,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:19:37,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:19:37,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:19:37,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:19:37,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:19:37,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:19:37,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:19:37,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:19:37,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:19:37,069 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 10:19:37,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142414488] [2020-10-13 10:19:37,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:19:37,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:19:37,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771677267] [2020-10-13 10:19:37,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:19:37,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:19:37,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:19:37,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:19:37,094 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 4 states. [2020-10-13 10:19:37,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:19:37,389 INFO L93 Difference]: Finished difference Result 82 states and 117 transitions. [2020-10-13 10:19:37,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:19:37,392 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-13 10:19:37,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:19:37,405 INFO L225 Difference]: With dead ends: 82 [2020-10-13 10:19:37,406 INFO L226 Difference]: Without dead ends: 41 [2020-10-13 10:19:37,410 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 10:19:37,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-13 10:19:37,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-13 10:19:37,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 10:19:37,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2020-10-13 10:19:37,478 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 17 [2020-10-13 10:19:37,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:19:37,478 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2020-10-13 10:19:37,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:19:37,479 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2020-10-13 10:19:37,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-13 10:19:37,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:19:37,483 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 10:19:37,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:19:37,484 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:19:37,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:19:37,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1896479864, now seen corresponding path program 1 times [2020-10-13 10:19:37,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:19:37,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023831000] [2020-10-13 10:19:37,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:19:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:19:37,600 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:19:37,601 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:19:37,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:19:37,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:19:37 BoogieIcfgContainer [2020-10-13 10:19:37,643 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:19:37,647 INFO L168 Benchmark]: Toolchain (without parser) took 2258.42 ms. Allocated memory was 147.3 MB in the beginning and 227.0 MB in the end (delta: 79.7 MB). Free memory was 102.8 MB in the beginning and 106.8 MB in the end (delta: -3.9 MB). Peak memory consumption was 75.7 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:37,649 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 10:19:37,650 INFO L168 Benchmark]: CACSL2BoogieTranslator took 500.24 ms. Allocated memory was 147.3 MB in the beginning and 227.0 MB in the end (delta: 79.7 MB). Free memory was 102.6 MB in the beginning and 212.1 MB in the end (delta: -109.4 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:37,651 INFO L168 Benchmark]: Boogie Preprocessor took 53.60 ms. Allocated memory is still 227.0 MB. Free memory was 212.1 MB in the beginning and 209.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:37,652 INFO L168 Benchmark]: RCFGBuilder took 517.47 ms. Allocated memory is still 227.0 MB. Free memory was 209.3 MB in the beginning and 183.7 MB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:37,653 INFO L168 Benchmark]: TraceAbstraction took 1180.82 ms. Allocated memory is still 227.0 MB. Free memory was 183.7 MB in the beginning and 106.8 MB in the end (delta: 76.9 MB). Peak memory consumption was 76.9 MB. Max. memory is 7.1 GB. [2020-10-13 10:19:37,662 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 500.24 ms. Allocated memory was 147.3 MB in the beginning and 227.0 MB in the end (delta: 79.7 MB). Free memory was 102.6 MB in the beginning and 212.1 MB in the end (delta: -109.4 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.60 ms. Allocated memory is still 227.0 MB. Free memory was 212.1 MB in the beginning and 209.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 517.47 ms. Allocated memory is still 227.0 MB. Free memory was 209.3 MB in the beginning and 183.7 MB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1180.82 ms. Allocated memory is still 227.0 MB. Free memory was 183.7 MB in the beginning and 106.8 MB in the end (delta: 76.9 MB). Peak memory consumption was 76.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 130]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 129, overapproximation of someUnaryDOUBLEoperation at line 47, overapproximation of bitwiseAnd at line 65, overapproximation of someBinaryArithmeticFLOAToperation at line 68. Possible FailurePath: [L12] static const float huge_floor = 1.0e30; [L32-L37] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L39-L44] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L46-L50] 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, }; [L52-L54] 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; [L126] float x = -1.0f / 0.0f; [L127] CALL, EXPR atan_float(x) [L57] float w, s1, s2, z; [L58] __int32_t ix, hx, id; [L61] ieee_float_shape_type gf_u; [L62] gf_u.value = (x) [L63] EXPR gf_u.word [L63] (hx) = gf_u.word [L65] ix = hx & 0x7fffffff [L66] COND TRUE ix >= 0x50800000 [L67] COND TRUE ((ix) > 0x7f800000L) [L68] return x + x; [L127] RET, EXPR atan_float(x) [L127] float res = atan_float(x); [L129] COND TRUE res != -pi_o_2 [L130] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 6 SDslu, 47 SDs, 0 SdLazy, 52 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=45occurred 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, 0.3s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 1216 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...