/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-benchs/arctan_Pade.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:14:18,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:14:18,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:14:18,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:14:18,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:14:18,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:14:18,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:14:18,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:14:18,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:14:18,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:14:18,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:14:18,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:14:18,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:14:18,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:14:18,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:14:18,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:14:18,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:14:18,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:14:18,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:14:18,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:14:18,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:14:18,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:14:18,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:14:18,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:14:18,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:14:18,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:14:18,625 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:14:18,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:14:18,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:14:18,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:14:18,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:14:18,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:14:18,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:14:18,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:14:18,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:14:18,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:14:18,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:14:18,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:14:18,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:14:18,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:14:18,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:14:18,642 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 10:14:18,693 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:14:18,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:14:18,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:14:18,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:14:18,698 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:14:18,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:14:18,699 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:14:18,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:14:18,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:14:18,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:14:18,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:14:18,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:14:18,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:14:18,701 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:14:18,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:14:18,702 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:14:18,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:14:18,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:14:18,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:14:18,703 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:14:18,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:14:18,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:14:18,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:14:18,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:14:18,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:14:18,705 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:14:18,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:14:18,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:14:18,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:14:18,706 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 10:14:19,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:14:19,110 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:14:19,115 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:14:19,117 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:14:19,118 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:14:19,118 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/arctan_Pade.c [2020-10-13 10:14:19,217 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3ed2c0e7/a2bd3b0bb35948e084d0fb263058fa25/FLAG38925bbf9 [2020-10-13 10:14:19,883 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:14:19,885 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/arctan_Pade.c [2020-10-13 10:14:19,897 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3ed2c0e7/a2bd3b0bb35948e084d0fb263058fa25/FLAG38925bbf9 [2020-10-13 10:14:20,149 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3ed2c0e7/a2bd3b0bb35948e084d0fb263058fa25 [2020-10-13 10:14:20,161 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:14:20,163 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:14:20,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:14:20,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:14:20,170 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:14:20,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:14:20" (1/1) ... [2020-10-13 10:14:20,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18153661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:20, skipping insertion in model container [2020-10-13 10:14:20,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:14:20" (1/1) ... [2020-10-13 10:14:20,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:14:20,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:14:20,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:14:20,441 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:14:20,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:14:20,483 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:14:20,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:20 WrapperNode [2020-10-13 10:14:20,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:14:20,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:14:20,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:14:20,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:14:20,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:20" (1/1) ... [2020-10-13 10:14:20,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:20" (1/1) ... [2020-10-13 10:14:20,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:20" (1/1) ... [2020-10-13 10:14:20,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:20" (1/1) ... [2020-10-13 10:14:20,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:20" (1/1) ... [2020-10-13 10:14:20,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:20" (1/1) ... [2020-10-13 10:14:20,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:20" (1/1) ... [2020-10-13 10:14:20,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:14:20,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:14:20,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:14:20,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:14:20,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:20" (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 10:14:20,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:14:20,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:14:20,677 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 10:14:20,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 10:14:20,677 INFO L138 BoogieDeclarations]: Found implementation of procedure PADE_2_2 [2020-10-13 10:14:20,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_0_1 [2020-10-13 10:14:20,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_POS [2020-10-13 10:14:20,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN [2020-10-13 10:14:20,678 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:14:20,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:14:20,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-13 10:14:20,679 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 10:14:20,679 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 10:14:20,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 10:14:20,679 INFO L130 BoogieDeclarations]: Found specification of procedure PADE_2_2 [2020-10-13 10:14:20,679 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_0_1 [2020-10-13 10:14:20,679 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_POS [2020-10-13 10:14:20,679 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN [2020-10-13 10:14:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:14:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:14:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:14:20,938 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:14:20,938 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 10:14:20,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:14:20 BoogieIcfgContainer [2020-10-13 10:14:20,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:14:20,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:14:20,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:14:20,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:14:20,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:14:20" (1/3) ... [2020-10-13 10:14:20,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411330d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:14:20, skipping insertion in model container [2020-10-13 10:14:20,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:20" (2/3) ... [2020-10-13 10:14:20,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411330d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:14:20, skipping insertion in model container [2020-10-13 10:14:20,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:14:20" (3/3) ... [2020-10-13 10:14:20,964 INFO L109 eAbstractionObserver]: Analyzing ICFG arctan_Pade.c [2020-10-13 10:14:20,981 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:14:20,993 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:14:21,015 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:14:21,048 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:14:21,048 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:14:21,048 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:14:21,049 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:14:21,049 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:14:21,049 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:14:21,049 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:14:21,049 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:14:21,073 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-10-13 10:14:21,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-13 10:14:21,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:14:21,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:14:21,087 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:14:21,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:14:21,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1416281359, now seen corresponding path program 1 times [2020-10-13 10:14:21,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:14:21,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845509972] [2020-10-13 10:14:21,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:14:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:21,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:21,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:21,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 10:14:21,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:21,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 10:14:21,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:21,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:14:21,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 10:14:21,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:14:21,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 18 [2020-10-13 10:14:21,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:14:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:21,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:21,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:21,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:14:21,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:21,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:14:21,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:21,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:14:21,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:14:21,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:14:21,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:14:21,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:14:21,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:14:21,453 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:235) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:378) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms at de.uni_freiburg.informatik.ultimate.logic.NoopScript.annotate(NoopScript.java:557) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertCodeBlocks.annotateAndAssertTerm(AnnotateAndAssertCodeBlocks.java:192) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertCodeBlocks.annotateAndAssertLocalVarAssignemntPendingContext(AnnotateAndAssertCodeBlocks.java:169) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:120) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:295) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:206) ... 30 more [2020-10-13 10:14:21,462 INFO L168 Benchmark]: Toolchain (without parser) took 1297.94 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 102.8 MB in the beginning and 146.2 MB in the end (delta: -43.4 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-10-13 10:14:21,464 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-13 10:14:21,465 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.33 ms. Allocated memory is still 139.5 MB. Free memory was 102.6 MB in the beginning and 92.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-10-13 10:14:21,467 INFO L168 Benchmark]: Boogie Preprocessor took 126.00 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 92.4 MB in the beginning and 180.3 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-10-13 10:14:21,468 INFO L168 Benchmark]: RCFGBuilder took 336.06 ms. Allocated memory is still 202.4 MB. Free memory was 180.3 MB in the beginning and 164.8 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. [2020-10-13 10:14:21,469 INFO L168 Benchmark]: TraceAbstraction took 508.40 ms. Allocated memory is still 202.4 MB. Free memory was 164.1 MB in the beginning and 146.2 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. [2020-10-13 10:14:21,474 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 320.33 ms. Allocated memory is still 139.5 MB. Free memory was 102.6 MB in the beginning and 92.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.00 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 92.4 MB in the beginning and 180.3 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 336.06 ms. Allocated memory is still 202.4 MB. Free memory was 180.3 MB in the beginning and 164.8 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 508.40 ms. Allocated memory is still 202.4 MB. Free memory was 164.1 MB in the beginning and 146.2 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:235) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...