/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_0681a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:06:30,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:06:30,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:06:30,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:06:30,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:06:30,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:06:30,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:06:30,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:06:30,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:06:30,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:06:30,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:06:30,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:06:30,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:06:30,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:06:30,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:06:30,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:06:30,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:06:30,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:06:30,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:06:30,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:06:30,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:06:30,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:06:30,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:06:30,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:06:30,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:06:30,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:06:30,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:06:30,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:06:30,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:06:30,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:06:30,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:06:30,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:06:30,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:06:30,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:06:30,189 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:06:30,189 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:06:30,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:06:30,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:06:30,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:06:30,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:06:30,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:06:30,194 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 09:06:30,253 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:06:30,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:06:30,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:06:30,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:06:30,256 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:06:30,256 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:06:30,257 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:06:30,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:06:30,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:06:30,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:06:30,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:06:30,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:06:30,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:06:30,259 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:06:30,259 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:06:30,260 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:06:30,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:06:30,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:06:30,261 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:06:30,261 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:06:30,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:06:30,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:06:30,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:06:30,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:06:30,262 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:06:30,263 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:06:30,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:06:30,263 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:06:30,263 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:06:30,264 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:06:30,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:06:30,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:06:30,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:06:30,763 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:06:30,763 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:06:30,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0681a.c [2020-10-29 09:06:30,857 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c95ea87a3/5bfedcad6ad84306bf8382ec2cf552a3/FLAGe442d4164 [2020-10-29 09:06:31,502 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:06:31,503 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0681a.c [2020-10-29 09:06:31,512 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c95ea87a3/5bfedcad6ad84306bf8382ec2cf552a3/FLAGe442d4164 [2020-10-29 09:06:31,851 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c95ea87a3/5bfedcad6ad84306bf8382ec2cf552a3 [2020-10-29 09:06:31,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:06:31,862 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:06:31,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:06:31,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:06:31,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:06:31,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:06:31" (1/1) ... [2020-10-29 09:06:31,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22d2294d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:31, skipping insertion in model container [2020-10-29 09:06:31,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:06:31" (1/1) ... [2020-10-29 09:06:31,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:06:31,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:06:32,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:06:32,165 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:06:32,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:06:32,288 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:06:32,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:32 WrapperNode [2020-10-29 09:06:32,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:06:32,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:06:32,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:06:32,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:06:32,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:32" (1/1) ... [2020-10-29 09:06:32,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:32" (1/1) ... [2020-10-29 09:06:32,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:32" (1/1) ... [2020-10-29 09:06:32,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:32" (1/1) ... [2020-10-29 09:06:32,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:32" (1/1) ... [2020-10-29 09:06:32,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:32" (1/1) ... [2020-10-29 09:06:32,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:32" (1/1) ... [2020-10-29 09:06:32,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:06:32,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:06:32,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:06:32,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:06:32,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:32" (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 [2020-10-29 09:06:32,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:06:32,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:06:32,477 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:06:32,477 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-29 09:06:32,477 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-29 09:06:32,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-29 09:06:32,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-29 09:06:32,478 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:06:32,478 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:06:32,478 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:06:32,478 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:06:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:06:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-29 09:06:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-29 09:06:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-29 09:06:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:06:32,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:06:32,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:06:32,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-29 09:06:32,480 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-29 09:06:32,481 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-29 09:06:32,481 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-29 09:06:32,481 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:06:32,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:06:32,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:06:32,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-29 09:06:32,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:06:33,501 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:06:33,501 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-29 09:06:33,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:06:33 BoogieIcfgContainer [2020-10-29 09:06:33,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:06:33,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:06:33,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:06:33,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:06:33,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:06:31" (1/3) ... [2020-10-29 09:06:33,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6c583a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:06:33, skipping insertion in model container [2020-10-29 09:06:33,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:32" (2/3) ... [2020-10-29 09:06:33,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6c583a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:06:33, skipping insertion in model container [2020-10-29 09:06:33,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:06:33" (3/3) ... [2020-10-29 09:06:33,512 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0681a.c [2020-10-29 09:06:33,524 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:06:33,530 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:06:33,544 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:06:33,572 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:06:33,573 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:06:33,573 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:06:33,573 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:06:33,573 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:06:33,573 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:06:33,573 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:06:33,573 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:06:33,598 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states. [2020-10-29 09:06:33,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 09:06:33,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:33,607 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 09:06:33,607 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:33,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:33,614 INFO L82 PathProgramCache]: Analyzing trace with hash 760112060, now seen corresponding path program 1 times [2020-10-29 09:06:33,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:33,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715981362] [2020-10-29 09:06:33,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:33,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:33,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:34,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:34,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 09:06:34,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:06:34,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-10-29 09:06:34,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:34,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:34,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:34,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 09:06:34,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:34,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 09:06:34,437 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-29 09:06:34,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:06:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:34,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:34,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:34,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:06:34,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:34,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 09:06:34,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:34,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:34,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:34,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:06:34,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:34,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:06:34,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:06:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:34,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:34,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:34,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:34,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 09:06:34,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:06:34,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 09:06:34,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:34,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:34,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:34,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:06:34,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:34,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:06:34,596 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 09:06:34,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715981362] [2020-10-29 09:06:34,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:06:34,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:06:34,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093859306] [2020-10-29 09:06:34,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:06:34,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:06:34,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:06:34,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:06:34,624 INFO L87 Difference]: Start difference. First operand 114 states. Second operand 4 states. [2020-10-29 09:06:34,800 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-29 09:06:35,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:06:35,352 INFO L93 Difference]: Finished difference Result 217 states and 341 transitions. [2020-10-29 09:06:35,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:06:35,355 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-29 09:06:35,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:06:35,366 INFO L225 Difference]: With dead ends: 217 [2020-10-29 09:06:35,366 INFO L226 Difference]: Without dead ends: 107 [2020-10-29 09:06:35,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:06:35,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-29 09:06:35,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-10-29 09:06:35,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-29 09:06:35,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 147 transitions. [2020-10-29 09:06:35,430 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 147 transitions. Word has length 20 [2020-10-29 09:06:35,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:06:35,431 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 147 transitions. [2020-10-29 09:06:35,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:06:35,431 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 147 transitions. [2020-10-29 09:06:35,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 09:06:35,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:35,433 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 09:06:35,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:06:35,433 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:35,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:35,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1505631205, now seen corresponding path program 1 times [2020-10-29 09:06:35,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:35,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003413833] [2020-10-29 09:06:35,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:06:35,515 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:06:35,515 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:06:35,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:06:35,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:06:35 BoogieIcfgContainer [2020-10-29 09:06:35,553 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:06:35,557 INFO L168 Benchmark]: Toolchain (without parser) took 3697.31 ms. Allocated memory was 163.6 MB in the beginning and 205.5 MB in the end (delta: 41.9 MB). Free memory was 138.1 MB in the beginning and 108.2 MB in the end (delta: 29.9 MB). Peak memory consumption was 72.2 MB. Max. memory is 8.0 GB. [2020-10-29 09:06:35,557 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 163.6 MB. Free memory is still 136.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:06:35,559 INFO L168 Benchmark]: CACSL2BoogieTranslator took 425.35 ms. Allocated memory is still 163.6 MB. Free memory was 137.5 MB in the beginning and 122.3 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-29 09:06:35,560 INFO L168 Benchmark]: Boogie Preprocessor took 88.29 ms. Allocated memory is still 163.6 MB. Free memory was 122.3 MB in the beginning and 119.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:06:35,561 INFO L168 Benchmark]: RCFGBuilder took 1124.30 ms. Allocated memory is still 163.6 MB. Free memory was 119.2 MB in the beginning and 109.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 12.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:06:35,562 INFO L168 Benchmark]: TraceAbstraction took 2047.73 ms. Allocated memory was 163.6 MB in the beginning and 205.5 MB in the end (delta: 41.9 MB). Free memory was 108.6 MB in the beginning and 108.2 MB in the end (delta: 392.2 kB). Peak memory consumption was 42.3 MB. Max. memory is 8.0 GB. [2020-10-29 09:06:35,573 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 163.6 MB. Free memory is still 136.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 425.35 ms. Allocated memory is still 163.6 MB. Free memory was 137.5 MB in the beginning and 122.3 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 88.29 ms. Allocated memory is still 163.6 MB. Free memory was 122.3 MB in the beginning and 119.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1124.30 ms. Allocated memory is still 163.6 MB. Free memory was 119.2 MB in the beginning and 109.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 12.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2047.73 ms. Allocated memory was 163.6 MB in the beginning and 205.5 MB in the end (delta: 41.9 MB). Free memory was 108.6 MB in the beginning and 108.2 MB in the end (delta: 392.2 kB). Peak memory consumption was 42.3 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 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) == 0 [L269] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L270] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_0681a.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: 1.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.7s, 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, 0.4s 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, 0.8s 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...