/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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 [2020-10-14 23:13:41,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:13:41,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:13:42,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:13:42,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:13:42,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:13:42,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:13:42,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:13:42,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:13:42,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:13:42,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:13:42,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:13:42,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:13:42,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:13:42,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:13:42,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:13:42,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:13:42,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:13:42,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:13:42,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:13:42,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:13:42,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:13:42,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:13:42,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:13:42,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:13:42,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:13:42,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:13:42,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:13:42,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:13:42,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:13:42,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:13:42,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:13:42,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:13:42,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:13:42,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:13:42,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:13:42,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:13:42,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:13:42,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:13:42,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:13:42,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:13:42,070 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 [2020-10-14 23:13:42,111 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:13:42,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:13:42,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:13:42,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:13:42,114 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:13:42,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:13:42,115 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:13:42,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:13:42,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:13:42,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:13:42,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:13:42,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:13:42,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:13:42,118 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:13:42,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:13:42,118 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:13:42,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:13:42,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:13:42,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:13:42,119 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:13:42,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:13:42,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:13:42,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:13:42,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:13:42,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:13:42,120 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:13:42,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:13:42,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:13:42,121 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:13:42,121 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:13:42,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:13:42,508 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:13:42,515 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:13:42,517 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:13:42,518 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:13:42,519 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/arctan_Pade.c [2020-10-14 23:13:42,600 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfd8aaa22/2a470a06c73245e489168d6874c26440/FLAG80464c896 [2020-10-14 23:13:43,085 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:13:43,086 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/arctan_Pade.c [2020-10-14 23:13:43,093 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfd8aaa22/2a470a06c73245e489168d6874c26440/FLAG80464c896 [2020-10-14 23:13:43,453 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfd8aaa22/2a470a06c73245e489168d6874c26440 [2020-10-14 23:13:43,465 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:13:43,467 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:13:43,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:13:43,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:13:43,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:13:43,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:13:43" (1/1) ... [2020-10-14 23:13:43,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@683cf205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:43, skipping insertion in model container [2020-10-14 23:13:43,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:13:43" (1/1) ... [2020-10-14 23:13:43,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:13:43,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:13:43,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:13:43,744 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:13:43,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:13:43,782 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:13:43,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:43 WrapperNode [2020-10-14 23:13:43,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:13:43,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:13:43,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:13:43,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:13:43,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:43" (1/1) ... [2020-10-14 23:13:43,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:43" (1/1) ... [2020-10-14 23:13:43,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:43" (1/1) ... [2020-10-14 23:13:43,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:43" (1/1) ... [2020-10-14 23:13:43,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:43" (1/1) ... [2020-10-14 23:13:43,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:43" (1/1) ... [2020-10-14 23:13:43,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:43" (1/1) ... [2020-10-14 23:13:43,965 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:13:43,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:13:43,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:13:43,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:13:43,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:43" (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 [2020-10-14 23:13:44,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:13:44,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:13:44,046 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 23:13:44,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 23:13:44,046 INFO L138 BoogieDeclarations]: Found implementation of procedure PADE_2_2 [2020-10-14 23:13:44,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_0_1 [2020-10-14 23:13:44,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_POS [2020-10-14 23:13:44,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN [2020-10-14 23:13:44,048 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:13:44,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:13:44,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-14 23:13:44,048 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:13:44,049 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 23:13:44,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 23:13:44,049 INFO L130 BoogieDeclarations]: Found specification of procedure PADE_2_2 [2020-10-14 23:13:44,050 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_0_1 [2020-10-14 23:13:44,050 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_POS [2020-10-14 23:13:44,050 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN [2020-10-14 23:13:44,050 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:13:44,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:13:44,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:13:44,283 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:13:44,284 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 23:13:44,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:13:44 BoogieIcfgContainer [2020-10-14 23:13:44,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:13:44,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:13:44,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:13:44,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:13:44,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:13:43" (1/3) ... [2020-10-14 23:13:44,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@591993d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:13:44, skipping insertion in model container [2020-10-14 23:13:44,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:43" (2/3) ... [2020-10-14 23:13:44,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@591993d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:13:44, skipping insertion in model container [2020-10-14 23:13:44,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:13:44" (3/3) ... [2020-10-14 23:13:44,303 INFO L109 eAbstractionObserver]: Analyzing ICFG arctan_Pade.c [2020-10-14 23:13:44,321 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:13:44,338 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:13:44,380 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:13:44,435 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:13:44,436 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:13:44,436 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:13:44,436 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:13:44,437 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:13:44,437 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:13:44,437 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:13:44,437 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:13:44,459 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-10-14 23:13:44,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:13:44,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:13:44,468 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] [2020-10-14 23:13:44,469 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:13:44,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:13:44,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1416281359, now seen corresponding path program 1 times [2020-10-14 23:13:44,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:13:44,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188573054] [2020-10-14 23:13:44,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:13:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:13:44,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:13:44,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:13:44,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:13:44,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:13:44,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 23:13:44,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:13:44,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:13:44,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:13:44,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:13:44,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:13:44,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:13:44,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:13:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:13:44,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:13:44,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:13:44,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:13:44,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:13:44,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:13:44,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:13:44,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:13:44,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:13:44,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:13:44,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:13:44,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:13:44,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:13:44,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:13:44,742 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 [2020-10-14 23:13:44,748 INFO L168 Benchmark]: Toolchain (without parser) took 1280.68 ms. Allocated memory was 148.4 MB in the beginning and 206.6 MB in the end (delta: 58.2 MB). Free memory was 103.4 MB in the beginning and 151.0 MB in the end (delta: -47.5 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-10-14 23:13:44,750 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 148.4 MB. Free memory was 121.7 MB in the beginning and 121.2 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 23:13:44,751 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.80 ms. Allocated memory is still 148.4 MB. Free memory was 103.4 MB in the beginning and 93.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-10-14 23:13:44,753 INFO L168 Benchmark]: Boogie Preprocessor took 180.86 ms. Allocated memory was 148.4 MB in the beginning and 206.6 MB in the end (delta: 58.2 MB). Free memory was 93.0 MB in the beginning and 185.0 MB in the end (delta: -92.0 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-10-14 23:13:44,754 INFO L168 Benchmark]: RCFGBuilder took 324.03 ms. Allocated memory is still 206.6 MB. Free memory was 185.0 MB in the beginning and 169.7 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2020-10-14 23:13:44,755 INFO L168 Benchmark]: TraceAbstraction took 452.94 ms. Allocated memory is still 206.6 MB. Free memory was 168.7 MB in the beginning and 151.0 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. [2020-10-14 23:13:44,762 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 148.4 MB. Free memory was 121.7 MB in the beginning and 121.2 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 315.80 ms. Allocated memory is still 148.4 MB. Free memory was 103.4 MB in the beginning and 93.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 180.86 ms. Allocated memory was 148.4 MB in the beginning and 206.6 MB in the end (delta: 58.2 MB). Free memory was 93.0 MB in the beginning and 185.0 MB in the end (delta: -92.0 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 324.03 ms. Allocated memory is still 206.6 MB. Free memory was 185.0 MB in the beginning and 169.7 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 452.94 ms. Allocated memory is still 206.6 MB. Free memory was 168.7 MB in the beginning and 151.0 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 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...