/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_0686b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:46:31,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:46:31,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:46:31,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:46:31,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:46:31,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:46:31,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:46:31,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:46:31,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:46:31,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:46:31,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:46:31,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:46:31,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:46:31,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:46:31,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:46:31,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:46:31,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:46:31,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:46:31,964 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:46:31,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:46:31,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:46:31,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:46:31,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:46:31,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:46:31,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:46:31,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:46:31,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:46:31,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:46:31,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:46:31,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:46:31,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:46:31,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:46:31,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:46:31,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:46:31,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:46:31,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:46:31,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:46:31,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:46:31,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:46:31,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:46:31,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:46:31,982 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 04:46:32,004 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:46:32,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:46:32,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:46:32,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:46:32,006 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:46:32,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:46:32,007 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:46:32,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:46:32,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:46:32,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:46:32,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:46:32,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:46:32,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:46:32,008 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:46:32,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:46:32,008 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:46:32,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:46:32,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:46:32,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:46:32,009 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:46:32,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:46:32,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:46:32,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:46:32,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:46:32,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:46:32,010 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:46:32,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:46:32,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:46:32,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:46:32,011 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:46:32,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:46:32,363 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:46:32,367 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:46:32,369 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:46:32,369 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:46:32,370 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0686b.c [2020-10-14 04:46:32,456 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0cb203312/486d0fdfe92f49678fee0a9a87049f05/FLAG6a532b720 [2020-10-14 04:46:32,923 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:46:32,923 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0686b.c [2020-10-14 04:46:32,933 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0cb203312/486d0fdfe92f49678fee0a9a87049f05/FLAG6a532b720 [2020-10-14 04:46:33,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0cb203312/486d0fdfe92f49678fee0a9a87049f05 [2020-10-14 04:46:33,290 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:46:33,293 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:46:33,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:46:33,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:46:33,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:46:33,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:46:33" (1/1) ... [2020-10-14 04:46:33,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ebe5ffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:33, skipping insertion in model container [2020-10-14 04:46:33,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:46:33" (1/1) ... [2020-10-14 04:46:33,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:46:33,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:46:33,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:46:33,596 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:46:33,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:46:33,799 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:46:33,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:33 WrapperNode [2020-10-14 04:46:33,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:46:33,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:46:33,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:46:33,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:46:33,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:33" (1/1) ... [2020-10-14 04:46:33,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:33" (1/1) ... [2020-10-14 04:46:33,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:33" (1/1) ... [2020-10-14 04:46:33,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:33" (1/1) ... [2020-10-14 04:46:33,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:33" (1/1) ... [2020-10-14 04:46:33,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:33" (1/1) ... [2020-10-14 04:46:33,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:33" (1/1) ... [2020-10-14 04:46:33,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:46:33,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:46:33,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:46:33,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:46:33,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:33" (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 04:46:33,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:46:33,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:46:33,948 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-14 04:46:33,949 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-14 04:46:33,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-14 04:46:33,949 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:46:33,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:46:33,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-14 04:46:33,949 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-14 04:46:33,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 04:46:33,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 04:46:33,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:46:33,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:46:33,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:46:33,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 04:46:33,951 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-14 04:46:33,951 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-14 04:46:33,951 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:46:33,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:46:33,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-14 04:46:33,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:46:34,629 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:46:34,629 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-14 04:46:34,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:46:34 BoogieIcfgContainer [2020-10-14 04:46:34,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:46:34,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:46:34,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:46:34,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:46:34,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:46:33" (1/3) ... [2020-10-14 04:46:34,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2646b1c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:46:34, skipping insertion in model container [2020-10-14 04:46:34,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:33" (2/3) ... [2020-10-14 04:46:34,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2646b1c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:46:34, skipping insertion in model container [2020-10-14 04:46:34,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:46:34" (3/3) ... [2020-10-14 04:46:34,645 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0686b.c [2020-10-14 04:46:34,657 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:46:34,666 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:46:34,681 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:46:34,706 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:46:34,706 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:46:34,707 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:46:34,707 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:46:34,707 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:46:34,707 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:46:34,708 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:46:34,708 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:46:34,727 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-10-14 04:46:34,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 04:46:34,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:46:34,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:46:34,735 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:46:34,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:46:34,740 INFO L82 PathProgramCache]: Analyzing trace with hash 947216650, now seen corresponding path program 1 times [2020-10-14 04:46:34,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:46:34,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323260598] [2020-10-14 04:46:34,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:46:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:34,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:35,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:35,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:35,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 04:46:35,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:46:35,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-14 04:46:35,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:35,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:35,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:35,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 04:46:35,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:35,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:46:35,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:46:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:35,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:35,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:35,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:46:35,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:46:35,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 04:46:35,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:35,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:35,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:35,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:46:35,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:35,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:46:35,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:46:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:35,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:35,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:35,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:35,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 04:46:35,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:46:35,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 04:46:35,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:35,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:35,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:35,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:46:35,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:35,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:46:35,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:46:35,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323260598] [2020-10-14 04:46:35,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:46:35,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:46:35,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747392116] [2020-10-14 04:46:35,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:46:35,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:46:35,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:46:35,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:46:35,481 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 4 states. [2020-10-14 04:46:35,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:46:35,893 INFO L93 Difference]: Finished difference Result 194 states and 310 transitions. [2020-10-14 04:46:35,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 04:46:35,895 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-14 04:46:35,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:46:35,908 INFO L225 Difference]: With dead ends: 194 [2020-10-14 04:46:35,909 INFO L226 Difference]: Without dead ends: 97 [2020-10-14 04:46:35,913 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 [2020-10-14 04:46:35,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-14 04:46:35,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-14 04:46:35,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 04:46:35,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 136 transitions. [2020-10-14 04:46:35,979 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 136 transitions. Word has length 18 [2020-10-14 04:46:35,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:46:35,979 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 136 transitions. [2020-10-14 04:46:35,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:46:35,980 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 136 transitions. [2020-10-14 04:46:35,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 04:46:35,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:46:35,983 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] [2020-10-14 04:46:35,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:46:35,984 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:46:35,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:46:35,985 INFO L82 PathProgramCache]: Analyzing trace with hash -246249165, now seen corresponding path program 1 times [2020-10-14 04:46:35,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:46:35,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370675141] [2020-10-14 04:46:35,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:46:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 04:46:36,036 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 04:46:36,037 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 04:46:36,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:46:36,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:46:36 BoogieIcfgContainer [2020-10-14 04:46:36,061 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 04:46:36,064 INFO L168 Benchmark]: Toolchain (without parser) took 2770.42 ms. Allocated memory was 145.2 MB in the beginning and 232.8 MB in the end (delta: 87.6 MB). Free memory was 101.3 MB in the beginning and 129.2 MB in the end (delta: -28.0 MB). Peak memory consumption was 59.6 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:36,065 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 145.2 MB. Free memory was 119.7 MB in the beginning and 119.3 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-14 04:46:36,066 INFO L168 Benchmark]: CACSL2BoogieTranslator took 505.76 ms. Allocated memory was 145.2 MB in the beginning and 200.8 MB in the end (delta: 55.6 MB). Free memory was 101.3 MB in the beginning and 174.9 MB in the end (delta: -73.6 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:36,066 INFO L168 Benchmark]: Boogie Preprocessor took 77.38 ms. Allocated memory is still 200.8 MB. Free memory was 174.9 MB in the beginning and 171.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:36,067 INFO L168 Benchmark]: RCFGBuilder took 756.60 ms. Allocated memory is still 200.8 MB. Free memory was 171.9 MB in the beginning and 128.8 MB in the end (delta: 43.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:36,068 INFO L168 Benchmark]: TraceAbstraction took 1424.47 ms. Allocated memory was 200.8 MB in the beginning and 232.8 MB in the end (delta: 32.0 MB). Free memory was 127.8 MB in the beginning and 129.2 MB in the end (delta: -1.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:36,072 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 145.2 MB. Free memory was 119.7 MB in the beginning and 119.3 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 505.76 ms. Allocated memory was 145.2 MB in the beginning and 200.8 MB in the end (delta: 55.6 MB). Free memory was 101.3 MB in the beginning and 174.9 MB in the end (delta: -73.6 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.38 ms. Allocated memory is still 200.8 MB. Free memory was 174.9 MB in the beginning and 171.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 756.60 ms. Allocated memory is still 200.8 MB. Free memory was 171.9 MB in the beginning and 128.8 MB in the end (delta: 43.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1424.47 ms. Allocated memory was 200.8 MB in the beginning and 232.8 MB in the end (delta: 32.0 MB). Free memory was 127.8 MB in the beginning and 129.2 MB in the end (delta: -1.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 256]: 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 52, overapproximation of someBinaryArithmeticDOUBLEoperation at line 163, overapproximation of bitwiseAnd at line 160, overapproximation of someBinaryDOUBLEComparisonOperation at line 255. 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 = 1.0 / 0.0; [L251] double y = -1.0 / 0.0; [L253] 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; [L253] RET, EXPR __ieee754_atan2(y, x) [L253] double res = __ieee754_atan2(y, x); [L255] COND TRUE res != -pi_o_4 [L256] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 101 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 136 SDtfs, 8 SDslu, 126 SDs, 0 SdLazy, 136 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=101occurred 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, 0.5s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 1411 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...