/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_0681b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:06:30,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:06:30,983 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:06:31,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:06:31,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:06:31,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:06:31,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:06:31,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:06:31,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:06:31,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:06:31,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:06:31,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:06:31,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:06:31,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:06:31,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:06:31,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:06:31,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:06:31,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:06:31,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:06:31,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:06:31,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:06:31,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:06:31,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:06:31,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:06:31,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:06:31,117 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:06:31,118 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:06:31,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:06:31,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:06:31,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:06:31,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:06:31,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:06:31,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:06:31,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:06:31,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:06:31,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:06:31,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:06:31,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:06:31,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:06:31,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:06:31,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:06:31,130 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 [2020-10-29 09:06:31,156 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:06:31,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:06:31,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:06:31,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:06:31,158 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:06:31,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:06:31,159 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:06:31,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:06:31,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:06:31,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:06:31,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:06:31,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:06:31,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:06:31,160 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:06:31,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:06:31,160 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:06:31,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:06:31,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:06:31,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:06:31,161 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:06:31,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:06:31,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:06:31,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:06:31,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:06:31,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:06:31,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:06:31,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:06:31,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:06:31,163 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:06:31,163 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:06:31,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:06:31,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:06:31,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:06:31,596 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:06:31,597 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:06:31,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0681b.c [2020-10-29 09:06:31,681 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd517ea64/c1a86be06d004e539f38f68a83cfac1a/FLAG0d342294c [2020-10-29 09:06:32,280 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:06:32,281 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0681b.c [2020-10-29 09:06:32,294 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd517ea64/c1a86be06d004e539f38f68a83cfac1a/FLAG0d342294c [2020-10-29 09:06:32,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd517ea64/c1a86be06d004e539f38f68a83cfac1a [2020-10-29 09:06:32,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:06:32,644 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:06:32,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:06:32,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:06:32,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:06:32,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:06:32" (1/1) ... [2020-10-29 09:06:32,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f0572f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:32, skipping insertion in model container [2020-10-29 09:06:32,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:06:32" (1/1) ... [2020-10-29 09:06:32,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:06:32,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:06:32,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:06:32,953 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:06:33,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:06:33,035 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:06:33,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:33 WrapperNode [2020-10-29 09:06:33,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:06:33,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:06:33,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:06:33,037 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:06:33,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:33" (1/1) ... [2020-10-29 09:06:33,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:33" (1/1) ... [2020-10-29 09:06:33,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:33" (1/1) ... [2020-10-29 09:06:33,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:33" (1/1) ... [2020-10-29 09:06:33,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:33" (1/1) ... [2020-10-29 09:06:33,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:33" (1/1) ... [2020-10-29 09:06:33,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:33" (1/1) ... [2020-10-29 09:06:33,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:06:33,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:06:33,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:06:33,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:06:33,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:33" (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 [2020-10-29 09:06:33,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:06:33,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:06:33,201 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:06:33,201 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-29 09:06:33,201 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-29 09:06:33,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-29 09:06:33,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-29 09:06:33,202 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:06:33,203 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:06:33,203 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:06:33,204 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:06:33,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:06:33,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-29 09:06:33,205 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-29 09:06:33,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-29 09:06:33,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:06:33,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:06:33,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:06:33,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-29 09:06:33,207 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-29 09:06:33,207 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-29 09:06:33,207 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-29 09:06:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:06:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:06:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:06:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-29 09:06:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:06:34,110 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:06:34,110 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-29 09:06:34,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:06:34 BoogieIcfgContainer [2020-10-29 09:06:34,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:06:34,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:06:34,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:06:34,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:06:34,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:06:32" (1/3) ... [2020-10-29 09:06:34,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af9378c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:06:34, skipping insertion in model container [2020-10-29 09:06:34,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:33" (2/3) ... [2020-10-29 09:06:34,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af9378c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:06:34, skipping insertion in model container [2020-10-29 09:06:34,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:06:34" (3/3) ... [2020-10-29 09:06:34,122 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0681b.c [2020-10-29 09:06:34,135 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:06:34,142 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:06:34,156 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:06:34,185 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:06:34,185 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:06:34,185 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:06:34,185 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:06:34,185 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:06:34,186 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:06:34,186 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:06:34,186 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:06:34,207 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states. [2020-10-29 09:06:34,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 09:06:34,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:34,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:06:34,216 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:34,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:34,223 INFO L82 PathProgramCache]: Analyzing trace with hash 760112060, now seen corresponding path program 1 times [2020-10-29 09:06:34,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:34,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679654403] [2020-10-29 09:06:34,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:34,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:34,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:34,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:34,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 09:06:34,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:06:34,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-29 09:06:34,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:34,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:34,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:34,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 09:06:34,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:34,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:06:34,908 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-29 09:06:34,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:06:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:34,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:34,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:34,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:06:34,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:34,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 09:06:34,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:34,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:34,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:34,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:06:34,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:34,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:06:34,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:06:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:34,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:34,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:35,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:35,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 09:06:35,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:06:35,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 09:06:35,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:35,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:35,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:35,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:06:35,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:35,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:06:35,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:06:35,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679654403] [2020-10-29 09:06:35,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:06:35,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:06:35,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520858907] [2020-10-29 09:06:35,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:06:35,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:06:35,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:06:35,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:06:35,052 INFO L87 Difference]: Start difference. First operand 114 states. Second operand 4 states. [2020-10-29 09:06:35,227 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-29 09:06:35,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:06:35,694 INFO L93 Difference]: Finished difference Result 217 states and 341 transitions. [2020-10-29 09:06:35,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:06:35,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-29 09:06:35,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:06:35,707 INFO L225 Difference]: With dead ends: 217 [2020-10-29 09:06:35,707 INFO L226 Difference]: Without dead ends: 107 [2020-10-29 09:06:35,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:06:35,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-29 09:06:35,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-10-29 09:06:35,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-29 09:06:35,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 147 transitions. [2020-10-29 09:06:35,772 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 147 transitions. Word has length 20 [2020-10-29 09:06:35,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:06:35,773 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 147 transitions. [2020-10-29 09:06:35,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:06:35,773 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 147 transitions. [2020-10-29 09:06:35,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 09:06:35,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:35,775 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] [2020-10-29 09:06:35,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:06:35,775 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:35,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:35,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1505631205, now seen corresponding path program 1 times [2020-10-29 09:06:35,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:35,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877504831] [2020-10-29 09:06:35,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:06:35,844 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:06:35,844 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:06:35,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:06:35,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:06:35 BoogieIcfgContainer [2020-10-29 09:06:35,869 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:06:35,871 INFO L168 Benchmark]: Toolchain (without parser) took 3230.73 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 125.2 MB in the beginning and 101.7 MB in the end (delta: 23.4 MB). Peak memory consumption was 67.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:06:35,872 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory was 123.9 MB in the beginning and 123.8 MB in the end (delta: 108.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:06:35,873 INFO L168 Benchmark]: CACSL2BoogieTranslator took 389.70 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 109.8 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-29 09:06:35,874 INFO L168 Benchmark]: Boogie Preprocessor took 78.31 ms. Allocated memory is still 151.0 MB. Free memory was 109.8 MB in the beginning and 106.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:06:35,874 INFO L168 Benchmark]: RCFGBuilder took 997.15 ms. Allocated memory is still 151.0 MB. Free memory was 106.7 MB in the beginning and 110.2 MB in the end (delta: -3.5 MB). Peak memory consumption was 28.2 MB. Max. memory is 8.0 GB. [2020-10-29 09:06:35,875 INFO L168 Benchmark]: TraceAbstraction took 1754.49 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 109.7 MB in the beginning and 101.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 51.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:06:35,879 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory was 123.9 MB in the beginning and 123.8 MB in the end (delta: 108.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 389.70 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 109.8 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 78.31 ms. Allocated memory is still 151.0 MB. Free memory was 109.8 MB in the beginning and 106.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 997.15 ms. Allocated memory is still 151.0 MB. Free memory was 106.7 MB in the beginning and 110.2 MB in the end (delta: -3.5 MB). Peak memory consumption was 28.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1754.49 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 109.7 MB in the beginning and 101.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 51.5 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 266, overapproximation of bitwiseAnd at line 162, overapproximation of someBinaryArithmeticDOUBLEoperation at line 165, overapproximation of someBinaryDOUBLEComparisonOperation at line 269. 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; [L265] double x = 0.0; [L266] double y = -0.0; [L267] 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; [L267] RET, EXPR __ieee754_atan2(y, x) [L267] double res = __ieee754_atan2(y, x); [L269] EXPR res == -0.0 && __signbit_double(res) == 1 [L269] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L270] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_0681b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 114 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 146 SDtfs, 12 SDslu, 133 SDs, 0 SdLazy, 144 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 1957 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...