/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=DEEPEST --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 language data_model -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0684b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:42:31,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:42:31,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:42:31,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:42:31,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:42:31,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:42:31,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:42:31,774 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:42:31,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:42:31,786 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:42:31,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:42:31,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:42:31,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:42:31,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:42:31,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:42:31,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:42:31,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:42:31,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:42:31,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:42:31,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:42:31,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:42:31,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:42:31,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:42:31,828 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:42:31,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:42:31,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:42:31,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:42:31,863 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:42:31,863 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:42:31,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:42:31,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:42:31,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:42:31,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:42:31,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:42:31,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:42:31,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:42:31,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:42:31,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:42:31,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:42:31,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:42:31,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:42:31,901 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 [2020-10-27 19:42:31,948 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:42:31,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:42:31,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:42:31,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:42:31,954 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:42:31,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:42:31,955 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:42:31,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:42:31,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:42:31,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:42:31,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:42:31,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:42:31,957 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:42:31,957 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:42:31,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:42:31,958 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:42:31,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:42:31,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:42:31,958 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:42:31,959 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:42:31,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:42:31,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:42:31,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:42:31,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:42:31,960 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:42:31,960 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:42:31,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:42:31,960 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:42:31,961 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:42:31,961 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:42:32,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:42:32,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:42:32,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:42:32,377 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:42:32,378 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:42:32,379 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0684b.c [2020-10-27 19:42:32,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74c45038f/37ca2101e65e4b368e0dc456919bd399/FLAG55c3f4f3e [2020-10-27 19:42:33,053 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:42:33,054 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0684b.c [2020-10-27 19:42:33,062 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74c45038f/37ca2101e65e4b368e0dc456919bd399/FLAG55c3f4f3e [2020-10-27 19:42:33,368 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74c45038f/37ca2101e65e4b368e0dc456919bd399 [2020-10-27 19:42:33,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:42:33,377 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:42:33,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:42:33,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:42:33,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:42:33,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:42:33" (1/1) ... [2020-10-27 19:42:33,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a4e9931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:33, skipping insertion in model container [2020-10-27 19:42:33,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:42:33" (1/1) ... [2020-10-27 19:42:33,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:42:33,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:42:33,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:42:33,689 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:42:33,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:42:33,871 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:42:33,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:33 WrapperNode [2020-10-27 19:42:33,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:42:33,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:42:33,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:42:33,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:42:33,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:33" (1/1) ... [2020-10-27 19:42:33,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:33" (1/1) ... [2020-10-27 19:42:33,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:33" (1/1) ... [2020-10-27 19:42:33,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:33" (1/1) ... [2020-10-27 19:42:34,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:33" (1/1) ... [2020-10-27 19:42:34,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:33" (1/1) ... [2020-10-27 19:42:34,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:33" (1/1) ... [2020-10-27 19:42:34,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:42:34,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:42:34,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:42:34,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:42:34,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:33" (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 [2020-10-27 19:42:34,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:42:34,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:42:34,122 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:42:34,122 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-27 19:42:34,122 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-27 19:42:34,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-27 19:42:34,122 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-10-27 19:42:34,123 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-10-27 19:42:34,123 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:42:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:42:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:42:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:42:34,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:42:34,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-27 19:42:34,124 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-27 19:42:34,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 19:42:34,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:42:34,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:42:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:42:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 19:42:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-27 19:42:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-27 19:42:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-10-27 19:42:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-10-27 19:42:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:42:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:42:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:42:34,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-27 19:42:34,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:42:35,171 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:42:35,171 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-27 19:42:35,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:42:35 BoogieIcfgContainer [2020-10-27 19:42:35,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:42:35,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:42:35,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:42:35,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:42:35,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:42:33" (1/3) ... [2020-10-27 19:42:35,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2568dd8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:42:35, skipping insertion in model container [2020-10-27 19:42:35,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:33" (2/3) ... [2020-10-27 19:42:35,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2568dd8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:42:35, skipping insertion in model container [2020-10-27 19:42:35,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:42:35" (3/3) ... [2020-10-27 19:42:35,186 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0684b.c [2020-10-27 19:42:35,198 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:42:35,204 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:42:35,217 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:42:35,243 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:42:35,243 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:42:35,244 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:42:35,244 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:42:35,244 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:42:35,244 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:42:35,244 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:42:35,244 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:42:35,265 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states. [2020-10-27 19:42:35,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 19:42:35,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:42:35,274 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] [2020-10-27 19:42:35,275 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:42:35,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:42:35,282 INFO L82 PathProgramCache]: Analyzing trace with hash -986197150, now seen corresponding path program 1 times [2020-10-27 19:42:35,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:42:35,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168046229] [2020-10-27 19:42:35,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:42:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:42:35,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:35,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:35,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:35,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:36,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:42:36,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 19:42:36,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:42:36,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 829 [2020-10-27 19:42:36,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:42:36,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:42:36,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 19:42:36,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:42:36,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:42:36,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:42:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:42:36,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:36,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:42:36,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:42:36,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:42:36,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 19:42:36,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:42:36,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:42:36,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:42:36,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:42:36,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:42:36,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:42:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:42:36,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:36,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:36,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:42:36,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:42:36,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:42:36,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 19:42:36,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:42:36,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:42:36,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 19:42:36,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:42:36,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:42:36,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 19:42:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:42:36,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:36,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:36,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:42:36,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 19:42:36,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:42:36,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 19:42:36,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:42:36,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:42:36,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:42:36,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:42:36,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:42:36,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:42:36,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168046229] [2020-10-27 19:42:36,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:42:36,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:42:36,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931763436] [2020-10-27 19:42:36,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:42:36,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:42:36,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:42:36,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:42:36,555 INFO L87 Difference]: Start difference. First operand 124 states. Second operand 4 states. [2020-10-27 19:42:37,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:42:37,098 INFO L93 Difference]: Finished difference Result 237 states and 368 transitions. [2020-10-27 19:42:37,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 19:42:37,099 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-27 19:42:37,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:42:37,111 INFO L225 Difference]: With dead ends: 237 [2020-10-27 19:42:37,111 INFO L226 Difference]: Without dead ends: 116 [2020-10-27 19:42:37,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:42:37,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-27 19:42:37,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-10-27 19:42:37,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-27 19:42:37,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 156 transitions. [2020-10-27 19:42:37,184 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 156 transitions. Word has length 28 [2020-10-27 19:42:37,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:42:37,185 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 156 transitions. [2020-10-27 19:42:37,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:42:37,185 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 156 transitions. [2020-10-27 19:42:37,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 19:42:37,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:42:37,187 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] [2020-10-27 19:42:37,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:42:37,187 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:42:37,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:42:37,188 INFO L82 PathProgramCache]: Analyzing trace with hash -2111058175, now seen corresponding path program 1 times [2020-10-27 19:42:37,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:42:37,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068777922] [2020-10-27 19:42:37,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:42:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:42:37,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:37,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:42:37,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 19:42:37,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:42:37,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-27 19:42:37,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:42:37,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:42:37,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 19:42:37,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:42:37,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:42:37,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:42:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:42:37,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:37,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:42:37,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:42:37,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:42:37,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 19:42:37,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:42:37,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:42:37,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:42:37,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:42:37,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:42:37,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:42:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:42:37,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:37,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:42:37,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 19:42:37,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:42:37,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 19:42:37,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:42:37,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:42:37,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:42:37,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:42:37,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:42:37,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 19:42:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:42:37,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:37,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:42:37,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:42:37,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:42:37,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 19:42:37,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:42:37,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:42:37,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 19:42:37,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:42:37,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:42:37,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:42:37,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068777922] [2020-10-27 19:42:37,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:42:37,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 19:42:37,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340444874] [2020-10-27 19:42:37,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:42:37,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:42:37,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:42:37,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:42:37,629 INFO L87 Difference]: Start difference. First operand 116 states and 156 transitions. Second operand 5 states. [2020-10-27 19:42:38,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:42:38,167 INFO L93 Difference]: Finished difference Result 209 states and 288 transitions. [2020-10-27 19:42:38,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 19:42:38,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-27 19:42:38,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:42:38,170 INFO L225 Difference]: With dead ends: 209 [2020-10-27 19:42:38,170 INFO L226 Difference]: Without dead ends: 116 [2020-10-27 19:42:38,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:42:38,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-27 19:42:38,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-10-27 19:42:38,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-27 19:42:38,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 155 transitions. [2020-10-27 19:42:38,189 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 155 transitions. Word has length 31 [2020-10-27 19:42:38,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:42:38,190 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 155 transitions. [2020-10-27 19:42:38,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:42:38,190 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 155 transitions. [2020-10-27 19:42:38,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 19:42:38,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:42:38,192 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, 1, 1] [2020-10-27 19:42:38,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:42:38,192 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:42:38,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:42:38,193 INFO L82 PathProgramCache]: Analyzing trace with hash 2032723797, now seen corresponding path program 1 times [2020-10-27 19:42:38,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:42:38,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402384215] [2020-10-27 19:42:38,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:42:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 19:42:38,339 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 19:42:38,339 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 19:42:38,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:42:38,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:42:38 BoogieIcfgContainer [2020-10-27 19:42:38,373 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:42:38,376 INFO L168 Benchmark]: Toolchain (without parser) took 5001.54 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 137.6 MB in the beginning and 83.4 MB in the end (delta: 54.2 MB). Peak memory consumption was 85.6 MB. Max. memory is 8.0 GB. [2020-10-27 19:42:38,378 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 156.2 MB. Free memory was 129.5 MB in the beginning and 129.4 MB in the end (delta: 137.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:42:38,379 INFO L168 Benchmark]: CACSL2BoogieTranslator took 493.99 ms. Allocated memory is still 156.2 MB. Free memory was 136.9 MB in the beginning and 135.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 14.3 MB. Max. memory is 8.0 GB. [2020-10-27 19:42:38,382 INFO L168 Benchmark]: Boogie Preprocessor took 159.23 ms. Allocated memory is still 156.2 MB. Free memory was 135.8 MB in the beginning and 132.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-27 19:42:38,383 INFO L168 Benchmark]: RCFGBuilder took 1141.74 ms. Allocated memory is still 156.2 MB. Free memory was 132.3 MB in the beginning and 129.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 42.7 MB. Max. memory is 8.0 GB. [2020-10-27 19:42:38,386 INFO L168 Benchmark]: TraceAbstraction took 3195.40 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 129.2 MB in the beginning and 83.4 MB in the end (delta: 45.8 MB). Peak memory consumption was 76.7 MB. Max. memory is 8.0 GB. [2020-10-27 19:42:38,397 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 156.2 MB. Free memory was 129.5 MB in the beginning and 129.4 MB in the end (delta: 137.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 493.99 ms. Allocated memory is still 156.2 MB. Free memory was 136.9 MB in the beginning and 135.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 14.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 159.23 ms. Allocated memory is still 156.2 MB. Free memory was 135.8 MB in the beginning and 132.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1141.74 ms. Allocated memory is still 156.2 MB. Free memory was 132.3 MB in the beginning and 129.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 42.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3195.40 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 129.2 MB in the beginning and 83.4 MB in the end (delta: 45.8 MB). Peak memory consumption was 76.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 164, overapproximation of someUnaryDOUBLEoperation at line 54, overapproximation of someBinaryArithmeticDOUBLEoperation at line 165, overapproximation of bitwiseAnd at line 162, overapproximation of someBinaryDOUBLEComparisonOperation at line 287. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] 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, }; [L62-L64] 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; [L141-L142] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L278] double x = __VERIFIER_nondet_double(); [L279] double y = -1.0 / 0.0; [L282] CALL, EXPR isfinite_double(x) [L262] __int32_t hx; [L264] ieee_double_shape_type gh_u; [L265] gh_u.value = (x) [L266] EXPR gh_u.parts.msw [L266] (hx) = gh_u.parts.msw [L268] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L282] RET, EXPR isfinite_double(x) [L282] isfinite_double(x) && isinf_double(y) [L282] CALL, EXPR isinf_double(y) [L248] __int32_t hx, lx; [L250] ieee_double_shape_type ew_u; [L251] ew_u.value = (x) [L252] EXPR ew_u.parts.msw [L252] (hx) = ew_u.parts.msw [L253] EXPR ew_u.parts.lsw [L253] (lx) = ew_u.parts.lsw [L255] hx &= 0x7fffffff [L256] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L257] hx = 0x7ff00000 - hx [L258] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L282] RET, EXPR isinf_double(y) [L282] isfinite_double(x) && isinf_double(y) [L282] COND TRUE isfinite_double(x) && isinf_double(y) [L284] CALL, EXPR __ieee754_atan2(y, x) [L145] double z; [L146] __int32_t k, m, hx, hy, ix, iy; [L147] __uint32_t lx, ly; [L150] ieee_double_shape_type ew_u; [L151] ew_u.value = (x) [L152] EXPR ew_u.parts.msw [L152] (hx) = ew_u.parts.msw [L153] EXPR ew_u.parts.lsw [L153] (lx) = ew_u.parts.lsw [L155] ix = hx & 0x7fffffff [L157] ieee_double_shape_type ew_u; [L158] ew_u.value = (y) [L159] EXPR ew_u.parts.msw [L159] (hy) = ew_u.parts.msw [L160] EXPR ew_u.parts.lsw [L160] (ly) = ew_u.parts.lsw [L162] iy = hy & 0x7fffffff [L163-L164] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L165] return x + y; [L284] RET, EXPR __ieee754_atan2(y, x) [L284] double res = __ieee754_atan2(y, x); [L287] COND TRUE res != -pi_o_2 [L288] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_0684b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 124 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 306 SDtfs, 28 SDslu, 414 SDs, 0 SdLazy, 321 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 7131 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...