/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_0684a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:42:29,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:42:29,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:42:30,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:42:30,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:42:30,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:42:30,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:42:30,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:42:30,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:42:30,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:42:30,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:42:30,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:42:30,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:42:30,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:42:30,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:42:30,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:42:30,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:42:30,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:42:30,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:42:30,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:42:30,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:42:30,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:42:30,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:42:30,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:42:30,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:42:30,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:42:30,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:42:30,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:42:30,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:42:30,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:42:30,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:42:30,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:42:30,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:42:30,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:42:30,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:42:30,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:42:30,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:42:30,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:42:30,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:42:30,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:42:30,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:42:30,157 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 19:42:30,210 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:42:30,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:42:30,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:42:30,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:42:30,215 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:42:30,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:42:30,216 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:42:30,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:42:30,216 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:42:30,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:42:30,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:42:30,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:42:30,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:42:30,218 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:42:30,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:42:30,219 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:42:30,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:42:30,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:42:30,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:42:30,220 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:42:30,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:42:30,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:42:30,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:42:30,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:42:30,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:42:30,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:42:30,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:42:30,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:42:30,222 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:42:30,222 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:42:30,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:42:30,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:42:30,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:42:30,710 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:42:30,711 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:42:30,712 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0684a.c [2020-10-27 19:42:30,798 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bdad99634/c398561812c043c180e67eece8e618e9/FLAG131b0be23 [2020-10-27 19:42:31,415 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:42:31,416 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0684a.c [2020-10-27 19:42:31,429 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bdad99634/c398561812c043c180e67eece8e618e9/FLAG131b0be23 [2020-10-27 19:42:31,775 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bdad99634/c398561812c043c180e67eece8e618e9 [2020-10-27 19:42:31,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:42:31,790 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:42:31,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:42:31,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:42:31,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:42:31,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:42:31" (1/1) ... [2020-10-27 19:42:31,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66fd6623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:31, skipping insertion in model container [2020-10-27 19:42:31,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:42:31" (1/1) ... [2020-10-27 19:42:31,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:42:31,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:42:32,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:42:32,157 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:42:32,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:42:32,251 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:42:32,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:32 WrapperNode [2020-10-27 19:42:32,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:42:32,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:42:32,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:42:32,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:42:32,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:32" (1/1) ... [2020-10-27 19:42:32,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:32" (1/1) ... [2020-10-27 19:42:32,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:32" (1/1) ... [2020-10-27 19:42:32,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:32" (1/1) ... [2020-10-27 19:42:32,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:32" (1/1) ... [2020-10-27 19:42:32,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:32" (1/1) ... [2020-10-27 19:42:32,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:32" (1/1) ... [2020-10-27 19:42:32,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:42:32,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:42:32,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:42:32,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:42:32,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:32" (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 19:42:32,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:42:32,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:42:32,440 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:42:32,440 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-27 19:42:32,441 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-27 19:42:32,441 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-27 19:42:32,442 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-10-27 19:42:32,442 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-10-27 19:42:32,442 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:42:32,442 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:42:32,443 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:42:32,443 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:42:32,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:42:32,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-27 19:42:32,444 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-27 19:42:32,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 19:42:32,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:42:32,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:42:32,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:42:32,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 19:42:32,446 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-27 19:42:32,446 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-27 19:42:32,446 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-10-27 19:42:32,446 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-10-27 19:42:32,446 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:42:32,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:42:32,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:42:32,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-27 19:42:32,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:42:33,326 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:42:33,326 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-27 19:42:33,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:42:33 BoogieIcfgContainer [2020-10-27 19:42:33,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:42:33,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:42:33,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:42:33,334 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:42:33,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:42:31" (1/3) ... [2020-10-27 19:42:33,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eec64f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:42:33, skipping insertion in model container [2020-10-27 19:42:33,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:32" (2/3) ... [2020-10-27 19:42:33,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eec64f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:42:33, skipping insertion in model container [2020-10-27 19:42:33,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:42:33" (3/3) ... [2020-10-27 19:42:33,337 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0684a.c [2020-10-27 19:42:33,349 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:42:33,354 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:42:33,367 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:42:33,396 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:42:33,396 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:42:33,396 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:42:33,396 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:42:33,396 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:42:33,396 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:42:33,396 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:42:33,397 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:42:33,418 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states. [2020-10-27 19:42:33,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 19:42:33,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:42:33,426 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 19:42:33,426 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:42:33,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:42:33,433 INFO L82 PathProgramCache]: Analyzing trace with hash -986197150, now seen corresponding path program 1 times [2020-10-27 19:42:33,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:42:33,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34769632] [2020-10-27 19:42:33,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:42:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:42:33,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:33,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:33,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:34,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:34,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:42:34,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 19:42:34,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:42:34,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 940 [2020-10-27 19:42:34,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:42:34,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:42:34,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 19:42:34,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:42:34,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:42:34,745 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-27 19:42:34,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:42:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:42:34,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:34,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:42:34,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:42:34,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:42:34,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 19:42:34,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:42:34,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:42:34,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:42:34,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:42:34,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:42:34,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:42:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:42:34,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:34,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:34,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:42:34,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:42:34,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:42:34,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 19:42:34,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:42:34,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:42:34,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 19:42:34,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:42:34,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:42:34,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 19:42:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:42:34,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:34,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:34,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:42:34,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 19:42:34,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:42:34,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 19:42:34,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:42:34,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:42:34,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:42:34,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:42:34,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:42:34,897 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 19:42:34,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34769632] [2020-10-27 19:42:34,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:42:34,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:42:34,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843558926] [2020-10-27 19:42:34,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:42:34,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:42:34,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:42:34,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:42:34,929 INFO L87 Difference]: Start difference. First operand 124 states. Second operand 4 states. [2020-10-27 19:42:35,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:42:35,513 INFO L93 Difference]: Finished difference Result 237 states and 368 transitions. [2020-10-27 19:42:35,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 19:42:35,515 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-27 19:42:35,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:42:35,527 INFO L225 Difference]: With dead ends: 237 [2020-10-27 19:42:35,527 INFO L226 Difference]: Without dead ends: 116 [2020-10-27 19:42:35,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:42:35,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-27 19:42:35,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-10-27 19:42:35,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-27 19:42:35,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 156 transitions. [2020-10-27 19:42:35,592 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 156 transitions. Word has length 28 [2020-10-27 19:42:35,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:42:35,593 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 156 transitions. [2020-10-27 19:42:35,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:42:35,593 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 156 transitions. [2020-10-27 19:42:35,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 19:42:35,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:42:35,595 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 19:42:35,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:42:35,596 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:42:35,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:42:35,596 INFO L82 PathProgramCache]: Analyzing trace with hash -2111058175, now seen corresponding path program 1 times [2020-10-27 19:42:35,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:42:35,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184371184] [2020-10-27 19:42:35,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:42:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:42:35,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:35,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:42:35,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 19:42:35,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:42:35,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-27 19:42:35,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:42:35,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:42:35,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 19:42:35,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:42:35,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:42:35,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:42:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:42:36,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:36,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:42:36,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:42:36,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:42:36,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 19:42:36,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:42:36,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:42:36,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:42:36,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:42:36,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:42:36,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:42:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:42:36,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:36,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:42:36,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 19:42:36,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:42:36,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 19:42:36,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:42:36,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:42:36,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:42:36,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:42:36,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:42:36,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 19:42:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:42:36,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:36,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:42:36,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:42:36,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:42:36,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 19:42:36,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:42:36,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:42:36,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 19:42:36,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:42:36,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:42:36,182 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 19:42:36,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184371184] [2020-10-27 19:42:36,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:42:36,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 19:42:36,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894334639] [2020-10-27 19:42:36,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:42:36,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:42:36,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:42:36,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:42:36,187 INFO L87 Difference]: Start difference. First operand 116 states and 156 transitions. Second operand 5 states. [2020-10-27 19:42:36,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:42:36,668 INFO L93 Difference]: Finished difference Result 209 states and 288 transitions. [2020-10-27 19:42:36,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 19:42:36,669 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-27 19:42:36,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:42:36,671 INFO L225 Difference]: With dead ends: 209 [2020-10-27 19:42:36,672 INFO L226 Difference]: Without dead ends: 116 [2020-10-27 19:42:36,673 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 19:42:36,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-27 19:42:36,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-10-27 19:42:36,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-27 19:42:36,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 155 transitions. [2020-10-27 19:42:36,690 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 155 transitions. Word has length 31 [2020-10-27 19:42:36,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:42:36,690 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 155 transitions. [2020-10-27 19:42:36,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:42:36,691 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 155 transitions. [2020-10-27 19:42:36,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 19:42:36,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:42:36,692 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 19:42:36,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:42:36,693 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:42:36,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:42:36,693 INFO L82 PathProgramCache]: Analyzing trace with hash 2032723797, now seen corresponding path program 1 times [2020-10-27 19:42:36,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:42:36,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785271726] [2020-10-27 19:42:36,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:42:36,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 19:42:36,763 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 19:42:36,764 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 19:42:36,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:42:36,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:42:36 BoogieIcfgContainer [2020-10-27 19:42:36,788 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:42:36,790 INFO L168 Benchmark]: Toolchain (without parser) took 5006.06 ms. Allocated memory was 163.6 MB in the beginning and 199.2 MB in the end (delta: 35.7 MB). Free memory was 137.9 MB in the beginning and 99.7 MB in the end (delta: 38.2 MB). Peak memory consumption was 74.6 MB. Max. memory is 8.0 GB. [2020-10-27 19:42:36,791 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 163.6 MB. Free memory is still 135.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:42:36,792 INFO L168 Benchmark]: CACSL2BoogieTranslator took 457.89 ms. Allocated memory is still 163.6 MB. Free memory was 137.2 MB in the beginning and 122.4 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-27 19:42:36,793 INFO L168 Benchmark]: Boogie Preprocessor took 94.59 ms. Allocated memory is still 163.6 MB. Free memory was 122.4 MB in the beginning and 119.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:42:36,794 INFO L168 Benchmark]: RCFGBuilder took 978.77 ms. Allocated memory is still 163.6 MB. Free memory was 119.0 MB in the beginning and 108.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 15.0 MB. Max. memory is 8.0 GB. [2020-10-27 19:42:36,795 INFO L168 Benchmark]: TraceAbstraction took 3458.59 ms. Allocated memory was 163.6 MB in the beginning and 199.2 MB in the end (delta: 35.7 MB). Free memory was 107.9 MB in the beginning and 99.7 MB in the end (delta: 8.2 MB). Peak memory consumption was 44.9 MB. Max. memory is 8.0 GB. [2020-10-27 19:42:36,798 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 163.6 MB. Free memory is still 135.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 457.89 ms. Allocated memory is still 163.6 MB. Free memory was 137.2 MB in the beginning and 122.4 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 94.59 ms. Allocated memory is still 163.6 MB. Free memory was 122.4 MB in the beginning and 119.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 978.77 ms. Allocated memory is still 163.6 MB. Free memory was 119.0 MB in the beginning and 108.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 15.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3458.59 ms. Allocated memory was 163.6 MB in the beginning and 199.2 MB in the end (delta: 35.7 MB). Free memory was 107.9 MB in the beginning and 99.7 MB in the end (delta: 8.2 MB). Peak memory consumption was 44.9 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_0684a.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: 3.3s, 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, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s 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, 0.1s SatisfiabilityAnalysisTime, 1.8s 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...