/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/double_req_bl_0660a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:17:54,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:17:54,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:17:54,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:17:54,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:17:54,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:17:54,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:17:54,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:17:54,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:17:54,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:17:54,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:17:54,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:17:54,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:17:54,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:17:54,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:17:54,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:17:54,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:17:54,381 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:17:54,383 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:17:54,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:17:54,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:17:54,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:17:54,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:17:54,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:17:54,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:17:54,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:17:54,404 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:17:54,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:17:54,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:17:54,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:17:54,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:17:54,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:17:54,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:17:54,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:17:54,412 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:17:54,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:17:54,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:17:54,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:17:54,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:17:54,414 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:17:54,415 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:17:54,416 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 10:17:54,444 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:17:54,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:17:54,446 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:17:54,446 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:17:54,446 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:17:54,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:17:54,447 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:17:54,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:17:54,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:17:54,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:17:54,447 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:17:54,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:17:54,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:17:54,448 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:17:54,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:17:54,449 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:17:54,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:17:54,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:17:54,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:17:54,449 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:17:54,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:17:54,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:17:54,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:17:54,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:17:54,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:17:54,456 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:17:54,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:17:54,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:17:54,457 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:17:54,457 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 10:17:54,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:17:54,786 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:17:54,790 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:17:54,791 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:17:54,792 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:17:54,793 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0660a.c [2020-10-13 10:17:54,867 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bfb153a1/b757f9f6918042d1b7b9f37f39a30b6f/FLAG418d14132 [2020-10-13 10:17:55,402 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:17:55,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0660a.c [2020-10-13 10:17:55,412 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bfb153a1/b757f9f6918042d1b7b9f37f39a30b6f/FLAG418d14132 [2020-10-13 10:17:55,752 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bfb153a1/b757f9f6918042d1b7b9f37f39a30b6f [2020-10-13 10:17:55,763 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:17:55,766 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:17:55,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:17:55,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:17:55,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:17:55,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:17:55" (1/1) ... [2020-10-13 10:17:55,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2088d45a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:17:55, skipping insertion in model container [2020-10-13 10:17:55,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:17:55" (1/1) ... [2020-10-13 10:17:55,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:17:55,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:17:56,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:17:56,226 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:17:56,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:17:56,314 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:17:56,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:17:56 WrapperNode [2020-10-13 10:17:56,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:17:56,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:17:56,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:17:56,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:17:56,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:17:56" (1/1) ... [2020-10-13 10:17:56,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:17:56" (1/1) ... [2020-10-13 10:17:56,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:17:56" (1/1) ... [2020-10-13 10:17:56,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:17:56" (1/1) ... [2020-10-13 10:17:56,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:17:56" (1/1) ... [2020-10-13 10:17:56,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:17:56" (1/1) ... [2020-10-13 10:17:56,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:17:56" (1/1) ... [2020-10-13 10:17:56,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:17:56,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:17:56,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:17:56,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:17:56,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:17:56" (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 10:17:56,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:17:56,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:17:56,470 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-13 10:17:56,471 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-13 10:17:56,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-13 10:17:56,471 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:17:56,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:17:56,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-13 10:17:56,473 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-13 10:17:56,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:17:56,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 10:17:56,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:17:56,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:17:56,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:17:56,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 10:17:56,475 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-13 10:17:56,475 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-13 10:17:56,475 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:17:56,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:17:56,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-13 10:17:56,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:17:57,156 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:17:57,157 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-13 10:17:57,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:17:57 BoogieIcfgContainer [2020-10-13 10:17:57,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:17:57,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:17:57,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:17:57,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:17:57,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:17:55" (1/3) ... [2020-10-13 10:17:57,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218ea92f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:17:57, skipping insertion in model container [2020-10-13 10:17:57,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:17:56" (2/3) ... [2020-10-13 10:17:57,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218ea92f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:17:57, skipping insertion in model container [2020-10-13 10:17:57,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:17:57" (3/3) ... [2020-10-13 10:17:57,175 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0660a.c [2020-10-13 10:17:57,186 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:17:57,195 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:17:57,211 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:17:57,237 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:17:57,238 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:17:57,238 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:17:57,238 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:17:57,238 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:17:57,239 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:17:57,239 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:17:57,239 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:17:57,260 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-10-13 10:17:57,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-13 10:17:57,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:17:57,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:17:57,271 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:17:57,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:17:57,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1380022172, now seen corresponding path program 1 times [2020-10-13 10:17:57,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:17:57,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591230034] [2020-10-13 10:17:57,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:17:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:17:57,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:17:57,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:17:57,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:17:57,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 10:17:57,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:17:57,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-10-13 10:17:57,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:17:57,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:17:57,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 10:17:57,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:17:57,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 10:17:57,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:17:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:17:57,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:17:57,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:17:58,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:17:58,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:17:58,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 10:17:58,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:17:58,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:17:58,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:17:58,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:17:58,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:17:58,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 10:17:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:17:58,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:17:58,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:17:58,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:17:58,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 10:17:58,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:17:58,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 10:17:58,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:17:58,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:17:58,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:17:58,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:17:58,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:17:58,099 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 10:17:58,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591230034] [2020-10-13 10:17:58,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:17:58,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:17:58,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145703596] [2020-10-13 10:17:58,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:17:58,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:17:58,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:17:58,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:17:58,130 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 4 states. [2020-10-13 10:17:58,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:17:58,631 INFO L93 Difference]: Finished difference Result 200 states and 317 transitions. [2020-10-13 10:17:58,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:17:58,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-13 10:17:58,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:17:58,647 INFO L225 Difference]: With dead ends: 200 [2020-10-13 10:17:58,647 INFO L226 Difference]: Without dead ends: 98 [2020-10-13 10:17:58,652 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 10:17:58,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-13 10:17:58,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-10-13 10:17:58,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-13 10:17:58,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 137 transitions. [2020-10-13 10:17:58,735 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 137 transitions. Word has length 19 [2020-10-13 10:17:58,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:17:58,736 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 137 transitions. [2020-10-13 10:17:58,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:17:58,738 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 137 transitions. [2020-10-13 10:17:58,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 10:17:58,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:17:58,740 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] [2020-10-13 10:17:58,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:17:58,742 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:17:58,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:17:58,744 INFO L82 PathProgramCache]: Analyzing trace with hash 959017453, now seen corresponding path program 1 times [2020-10-13 10:17:58,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:17:58,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030951895] [2020-10-13 10:17:58,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:17:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:17:58,838 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:17:58,838 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:17:58,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:17:58,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:17:58 BoogieIcfgContainer [2020-10-13 10:17:58,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:17:58,878 INFO L168 Benchmark]: Toolchain (without parser) took 3112.17 ms. Allocated memory was 147.8 MB in the beginning and 234.9 MB in the end (delta: 87.0 MB). Free memory was 103.7 MB in the beginning and 123.1 MB in the end (delta: -19.5 MB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:17:58,881 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 147.8 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-13 10:17:58,882 INFO L168 Benchmark]: CACSL2BoogieTranslator took 548.98 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 103.4 MB in the beginning and 176.4 MB in the end (delta: -73.0 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. [2020-10-13 10:17:58,883 INFO L168 Benchmark]: Boogie Preprocessor took 79.00 ms. Allocated memory is still 204.5 MB. Free memory was 176.4 MB in the beginning and 173.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-10-13 10:17:58,884 INFO L168 Benchmark]: RCFGBuilder took 769.48 ms. Allocated memory is still 204.5 MB. Free memory was 173.2 MB in the beginning and 130.2 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 7.1 GB. [2020-10-13 10:17:58,886 INFO L168 Benchmark]: TraceAbstraction took 1708.52 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 129.5 MB in the beginning and 123.1 MB in the end (delta: 6.4 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. [2020-10-13 10:17:58,896 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 147.8 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 548.98 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 103.4 MB in the beginning and 176.4 MB in the end (delta: -73.0 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 79.00 ms. Allocated memory is still 204.5 MB. Free memory was 176.4 MB in the beginning and 173.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 769.48 ms. Allocated memory is still 204.5 MB. Free memory was 173.2 MB in the beginning and 130.2 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1708.52 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 129.5 MB in the beginning and 123.1 MB in the end (delta: 6.4 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 259]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 162, overapproximation of someUnaryDOUBLEoperation at line 251, overapproximation of bitwiseAnd at line 160, overapproximation of someBinaryArithmeticDOUBLEoperation at line 163, overapproximation of someBinaryDOUBLEComparisonOperation at line 258. Possible FailurePath: [L37-L42] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L44-L49] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L51-L58] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L60-L62] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L139-L140] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L250] double x = __VERIFIER_nondet_double(); [L251] double y = -0.0; [L253] COND TRUE x < 0.0 [L255] CALL, EXPR __ieee754_atan2(y, x) [L143] double z; [L144] __int32_t k, m, hx, hy, ix, iy; [L145] __uint32_t lx, ly; [L148] ieee_double_shape_type ew_u; [L149] ew_u.value = (x) [L150] EXPR ew_u.parts.msw [L150] (hx) = ew_u.parts.msw [L151] EXPR ew_u.parts.lsw [L151] (lx) = ew_u.parts.lsw [L153] ix = hx & 0x7fffffff [L155] ieee_double_shape_type ew_u; [L156] ew_u.value = (y) [L157] EXPR ew_u.parts.msw [L157] (hy) = ew_u.parts.msw [L158] EXPR ew_u.parts.lsw [L158] (ly) = ew_u.parts.lsw [L160] iy = hy & 0x7fffffff [L161-L162] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L163] return x + y; [L255] RET, EXPR __ieee754_atan2(y, x) [L255] double res = __ieee754_atan2(y, x); [L258] COND TRUE res != -pi [L259] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 103 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: 139 SDtfs, 16 SDslu, 125 SDs, 0 SdLazy, 139 SolverSat, 12 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=103occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 1512 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...