/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=SHALLOWEST --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_0661a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:01:24,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:01:24,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:01:24,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:01:24,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:01:24,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:01:24,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:01:24,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:01:24,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:01:24,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:01:24,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:01:24,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:01:24,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:01:24,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:01:24,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:01:24,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:01:24,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:01:24,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:01:24,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:01:24,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:01:24,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:01:24,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:01:24,548 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:01:24,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:01:24,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:01:24,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:01:24,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:01:24,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:01:24,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:01:24,556 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:01:24,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:01:24,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:01:24,558 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:01:24,559 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:01:24,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:01:24,561 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:01:24,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:01:24,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:01:24,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:01:24,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:01:24,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:01:24,582 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 01:01:24,638 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:01:24,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:01:24,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:01:24,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:01:24,641 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:01:24,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:01:24,642 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:01:24,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:01:24,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:01:24,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:01:24,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:01:24,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:01:24,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:01:24,643 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:01:24,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:01:24,643 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:01:24,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:01:24,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:01:24,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:01:24,646 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:01:24,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:01:24,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:01:24,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:01:24,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:01:24,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:01:24,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:01:24,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:01:24,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:01:24,647 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:01:24,647 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:01:25,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:01:25,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:01:25,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:01:25,126 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:01:25,127 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:01:25,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0661a.c [2020-10-27 01:01:25,214 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c17da204/490f6c3ed47b4b0999331308126a8812/FLAG94761857f [2020-10-27 01:01:25,891 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:01:25,892 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0661a.c [2020-10-27 01:01:25,910 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c17da204/490f6c3ed47b4b0999331308126a8812/FLAG94761857f [2020-10-27 01:01:26,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c17da204/490f6c3ed47b4b0999331308126a8812 [2020-10-27 01:01:26,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:01:26,203 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:01:26,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:01:26,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:01:26,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:01:26,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:01:26" (1/1) ... [2020-10-27 01:01:26,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@95aae74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:26, skipping insertion in model container [2020-10-27 01:01:26,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:01:26" (1/1) ... [2020-10-27 01:01:26,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:01:26,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:01:26,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:01:26,532 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:01:26,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:01:26,631 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:01:26,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:26 WrapperNode [2020-10-27 01:01:26,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:01:26,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:01:26,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:01:26,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:01:26,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:26" (1/1) ... [2020-10-27 01:01:26,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:26" (1/1) ... [2020-10-27 01:01:26,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:26" (1/1) ... [2020-10-27 01:01:26,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:26" (1/1) ... [2020-10-27 01:01:26,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:26" (1/1) ... [2020-10-27 01:01:26,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:26" (1/1) ... [2020-10-27 01:01:26,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:26" (1/1) ... [2020-10-27 01:01:26,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:01:26,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:01:26,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:01:26,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:01:26,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:26" (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 01:01:26,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:01:26,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:01:26,922 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:01:26,922 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-27 01:01:26,923 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-27 01:01:26,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-27 01:01:26,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-27 01:01:26,923 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:01:26,924 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:01:26,924 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:01:26,925 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:01:26,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:01:26,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-27 01:01:26,925 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-27 01:01:26,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:01:26,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:01:26,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:01:26,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:01:26,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:01:26,928 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-27 01:01:26,928 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-27 01:01:26,928 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-27 01:01:26,928 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:01:26,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:01:26,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:01:26,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-27 01:01:26,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:01:28,192 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:01:28,193 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-27 01:01:28,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:01:28 BoogieIcfgContainer [2020-10-27 01:01:28,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:01:28,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:01:28,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:01:28,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:01:28,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:01:26" (1/3) ... [2020-10-27 01:01:28,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e4c939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:01:28, skipping insertion in model container [2020-10-27 01:01:28,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:26" (2/3) ... [2020-10-27 01:01:28,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e4c939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:01:28, skipping insertion in model container [2020-10-27 01:01:28,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:01:28" (3/3) ... [2020-10-27 01:01:28,204 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0661a.c [2020-10-27 01:01:28,216 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:01:28,222 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:01:28,235 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:01:28,286 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:01:28,286 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:01:28,286 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:01:28,287 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:01:28,287 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:01:28,287 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:01:28,287 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:01:28,287 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:01:28,312 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2020-10-27 01:01:28,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 01:01:28,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:01:28,320 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] [2020-10-27 01:01:28,320 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:01:28,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:01:28,327 INFO L82 PathProgramCache]: Analyzing trace with hash -809391335, now seen corresponding path program 1 times [2020-10-27 01:01:28,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:01:28,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994501183] [2020-10-27 01:01:28,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:01:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:01:28,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:28,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:28,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:01:28,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 01:01:28,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:01:28,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-27 01:01:28,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:01:28,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:01:28,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 01:01:28,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:01:28,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:01:29,093 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-27 01:01:29,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:01:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:01:29,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:29,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:01:29,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:01:29,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:01:29,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 01:01:29,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:01:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:01:29,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:01:29,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:01:29,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:01:29,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 01:01:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:01:29,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:29,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:29,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:01:29,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:01:29,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:01:29,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 01:01:29,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:01:29,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:01:29,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:01:29,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:01:29,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:01:29,255 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 01:01:29,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994501183] [2020-10-27 01:01:29,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:01:29,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:01:29,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265858473] [2020-10-27 01:01:29,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:01:29,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:01:29,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:01:29,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:01:29,283 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 4 states. [2020-10-27 01:01:29,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:01:29,921 INFO L93 Difference]: Finished difference Result 223 states and 348 transitions. [2020-10-27 01:01:29,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:01:29,923 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-27 01:01:29,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:01:29,935 INFO L225 Difference]: With dead ends: 223 [2020-10-27 01:01:29,935 INFO L226 Difference]: Without dead ends: 108 [2020-10-27 01:01:29,940 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 [2020-10-27 01:01:29,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-27 01:01:29,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-10-27 01:01:29,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-27 01:01:29,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 148 transitions. [2020-10-27 01:01:30,000 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 148 transitions. Word has length 21 [2020-10-27 01:01:30,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:01:30,001 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 148 transitions. [2020-10-27 01:01:30,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:01:30,003 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 148 transitions. [2020-10-27 01:01:30,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 01:01:30,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:01:30,004 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] [2020-10-27 01:01:30,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:01:30,005 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:01:30,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:01:30,006 INFO L82 PathProgramCache]: Analyzing trace with hash 115837474, now seen corresponding path program 1 times [2020-10-27 01:01:30,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:01:30,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135863673] [2020-10-27 01:01:30,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:01:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:01:30,103 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:01:30,104 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:01:30,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:01:30,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:01:30 BoogieIcfgContainer [2020-10-27 01:01:30,133 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:01:30,137 INFO L168 Benchmark]: Toolchain (without parser) took 3936.56 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 125.2 MB in the beginning and 107.6 MB in the end (delta: 17.6 MB). Peak memory consumption was 54.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:01:30,145 INFO L168 Benchmark]: CDTParser took 0.62 ms. Allocated memory is still 151.0 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:01:30,147 INFO L168 Benchmark]: CACSL2BoogieTranslator took 427.38 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 109.5 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:01:30,148 INFO L168 Benchmark]: Boogie Preprocessor took 173.76 ms. Allocated memory is still 151.0 MB. Free memory was 109.5 MB in the beginning and 106.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:01:30,149 INFO L168 Benchmark]: RCFGBuilder took 1385.05 ms. Allocated memory is still 151.0 MB. Free memory was 106.0 MB in the beginning and 127.1 MB in the end (delta: -21.1 MB). Peak memory consumption was 47.0 MB. Max. memory is 8.0 GB. [2020-10-27 01:01:30,150 INFO L168 Benchmark]: TraceAbstraction took 1936.80 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 126.6 MB in the beginning and 107.6 MB in the end (delta: 19.0 MB). Peak memory consumption was 54.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:01:30,161 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62 ms. Allocated memory is still 151.0 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 427.38 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 109.5 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 173.76 ms. Allocated memory is still 151.0 MB. Free memory was 109.5 MB in the beginning and 106.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1385.05 ms. Allocated memory is still 151.0 MB. Free memory was 106.0 MB in the beginning and 127.1 MB in the end (delta: -21.1 MB). Peak memory consumption was 47.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1936.80 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 126.6 MB in the beginning and 107.6 MB in the end (delta: 19.0 MB). Peak memory consumption was 54.6 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 267, overapproximation of bitwiseAnd at line 162, overapproximation of someBinaryArithmeticDOUBLEoperation at line 165, overapproximation of someBinaryDOUBLEComparisonOperation at line 272. 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; [L266] double x = __VERIFIER_nondet_double(); [L267] double y = -0.0; [L269] COND TRUE x > 0.0 [L270] 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; [L270] RET, EXPR __ieee754_atan2(y, x) [L270] double res = __ieee754_atan2(y, x); [L272] EXPR res == -0.0 && __signbit_double(res) == 1 [L272] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L273] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_0661a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 116 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 149 SDtfs, 20 SDslu, 132 SDs, 0 SdLazy, 147 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=116occurred 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, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 2080 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...