/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_0661b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:06:22,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:06:22,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:06:22,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:06:22,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:06:22,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:06:22,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:06:22,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:06:22,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:06:22,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:06:22,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:06:22,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:06:22,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:06:22,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:06:22,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:06:22,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:06:22,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:06:22,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:06:22,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:06:22,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:06:22,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:06:22,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:06:22,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:06:22,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:06:22,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:06:22,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:06:22,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:06:22,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:06:22,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:06:22,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:06:22,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:06:22,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:06:22,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:06:22,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:06:22,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:06:22,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:06:22,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:06:22,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:06:22,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:06:22,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:06:22,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:06:22,320 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 09:06:22,370 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:06:22,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:06:22,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:06:22,375 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:06:22,375 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:06:22,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:06:22,375 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:06:22,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:06:22,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:06:22,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:06:22,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:06:22,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:06:22,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:06:22,378 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:06:22,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:06:22,378 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:06:22,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:06:22,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:06:22,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:06:22,379 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:06:22,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:06:22,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:06:22,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:06:22,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:06:22,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:06:22,380 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:06:22,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:06:22,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:06:22,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:06:22,381 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:06:22,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:06:22,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:06:22,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:06:22,860 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:06:22,861 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:06:22,862 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0661b.c [2020-10-29 09:06:22,958 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1127404d5/efcc35acb45e474a9d235ac653112bd7/FLAGefe28f3f4 [2020-10-29 09:06:23,804 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:06:23,805 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0661b.c [2020-10-29 09:06:23,824 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1127404d5/efcc35acb45e474a9d235ac653112bd7/FLAGefe28f3f4 [2020-10-29 09:06:24,097 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1127404d5/efcc35acb45e474a9d235ac653112bd7 [2020-10-29 09:06:24,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:06:24,108 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:06:24,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:06:24,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:06:24,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:06:24,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:06:24" (1/1) ... [2020-10-29 09:06:24,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c57803a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:24, skipping insertion in model container [2020-10-29 09:06:24,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:06:24" (1/1) ... [2020-10-29 09:06:24,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:06:24,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:06:24,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:06:24,448 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:06:24,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:06:24,545 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:06:24,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:24 WrapperNode [2020-10-29 09:06:24,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:06:24,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:06:24,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:06:24,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:06:24,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:24" (1/1) ... [2020-10-29 09:06:24,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:24" (1/1) ... [2020-10-29 09:06:24,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:24" (1/1) ... [2020-10-29 09:06:24,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:24" (1/1) ... [2020-10-29 09:06:24,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:24" (1/1) ... [2020-10-29 09:06:24,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:24" (1/1) ... [2020-10-29 09:06:24,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:24" (1/1) ... [2020-10-29 09:06:24,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:06:24,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:06:24,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:06:24,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:06:24,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:24" (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 09:06:24,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:06:24,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:06:24,716 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:06:24,716 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-29 09:06:24,716 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-29 09:06:24,716 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-29 09:06:24,716 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-29 09:06:24,716 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:06:24,717 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:06:24,717 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:06:24,717 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:06:24,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:06:24,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-29 09:06:24,718 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-29 09:06:24,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-29 09:06:24,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:06:24,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:06:24,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:06:24,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-29 09:06:24,719 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-29 09:06:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-29 09:06:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-29 09:06:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:06:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:06:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:06:24,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-29 09:06:24,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:06:25,691 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:06:25,691 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-29 09:06:25,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:06:25 BoogieIcfgContainer [2020-10-29 09:06:25,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:06:25,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:06:25,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:06:25,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:06:25,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:06:24" (1/3) ... [2020-10-29 09:06:25,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f47d2c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:06:25, skipping insertion in model container [2020-10-29 09:06:25,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:24" (2/3) ... [2020-10-29 09:06:25,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f47d2c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:06:25, skipping insertion in model container [2020-10-29 09:06:25,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:06:25" (3/3) ... [2020-10-29 09:06:25,707 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0661b.c [2020-10-29 09:06:25,721 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:06:25,727 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:06:25,742 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:06:25,783 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:06:25,783 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:06:25,784 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:06:25,784 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:06:25,784 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:06:25,784 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:06:25,784 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:06:25,784 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:06:25,815 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2020-10-29 09:06:25,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 09:06:25,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:25,825 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] [2020-10-29 09:06:25,826 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:25,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:25,836 INFO L82 PathProgramCache]: Analyzing trace with hash -809391335, now seen corresponding path program 1 times [2020-10-29 09:06:25,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:25,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130319614] [2020-10-29 09:06:25,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:26,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:26,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:26,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:26,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:06:26,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:06:26,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-10-29 09:06:26,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:26,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:26,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:26,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 09:06:26,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:26,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 09:06:26,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:06:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:26,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:26,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:26,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:06:26,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:06:26,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 09:06:26,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:26,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:26,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:26,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:06:26,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:26,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:06:26,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:06:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:06:26,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:26,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:06:26,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:06:26,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 09:06:26,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:06:26,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:06:26,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:06:26,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:06:26,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:06:26,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 09:06:26,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:06:26,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:06:26,618 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 09:06:26,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130319614] [2020-10-29 09:06:26,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:06:26,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:06:26,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422535860] [2020-10-29 09:06:26,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:06:26,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:06:26,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:06:26,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:06:26,645 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 4 states. [2020-10-29 09:06:26,787 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-29 09:06:27,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:06:27,165 INFO L93 Difference]: Finished difference Result 223 states and 348 transitions. [2020-10-29 09:06:27,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:06:27,167 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-29 09:06:27,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:06:27,179 INFO L225 Difference]: With dead ends: 223 [2020-10-29 09:06:27,179 INFO L226 Difference]: Without dead ends: 108 [2020-10-29 09:06:27,184 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 09:06:27,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-29 09:06:27,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-10-29 09:06:27,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-29 09:06:27,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 148 transitions. [2020-10-29 09:06:27,242 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 148 transitions. Word has length 21 [2020-10-29 09:06:27,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:06:27,242 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 148 transitions. [2020-10-29 09:06:27,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:06:27,243 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 148 transitions. [2020-10-29 09:06:27,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 09:06:27,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:06:27,244 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] [2020-10-29 09:06:27,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:06:27,245 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:06:27,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:06:27,246 INFO L82 PathProgramCache]: Analyzing trace with hash 115837474, now seen corresponding path program 1 times [2020-10-29 09:06:27,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:06:27,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846133200] [2020-10-29 09:06:27,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:06:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:06:27,324 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:06:27,324 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:06:27,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:06:27,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:06:27 BoogieIcfgContainer [2020-10-29 09:06:27,353 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:06:27,359 INFO L168 Benchmark]: Toolchain (without parser) took 3252.13 ms. Allocated memory is still 164.6 MB. Free memory was 139.4 MB in the beginning and 81.9 MB in the end (delta: 57.5 MB). Peak memory consumption was 58.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:06:27,360 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 125.8 MB. Free memory is still 84.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:06:27,361 INFO L168 Benchmark]: CACSL2BoogieTranslator took 435.93 ms. Allocated memory is still 164.6 MB. Free memory was 138.9 MB in the beginning and 124.3 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-29 09:06:27,362 INFO L168 Benchmark]: Boogie Preprocessor took 81.61 ms. Allocated memory is still 164.6 MB. Free memory was 124.3 MB in the beginning and 121.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:06:27,366 INFO L168 Benchmark]: RCFGBuilder took 1065.12 ms. Allocated memory is still 164.6 MB. Free memory was 121.0 MB in the beginning and 126.0 MB in the end (delta: -5.0 MB). Peak memory consumption was 29.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:06:27,367 INFO L168 Benchmark]: TraceAbstraction took 1655.64 ms. Allocated memory is still 164.6 MB. Free memory was 125.5 MB in the beginning and 81.9 MB in the end (delta: 43.5 MB). Peak memory consumption was 44.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:06:27,370 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 125.8 MB. Free memory is still 84.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 435.93 ms. Allocated memory is still 164.6 MB. Free memory was 138.9 MB in the beginning and 124.3 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 81.61 ms. Allocated memory is still 164.6 MB. Free memory was 124.3 MB in the beginning and 121.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1065.12 ms. Allocated memory is still 164.6 MB. Free memory was 121.0 MB in the beginning and 126.0 MB in the end (delta: -5.0 MB). Peak memory consumption was 29.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1655.64 ms. Allocated memory is still 164.6 MB. Free memory was 125.5 MB in the beginning and 81.9 MB in the end (delta: 43.5 MB). Peak memory consumption was 44.1 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 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) == 0 [L272] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L273] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_0661b.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: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, 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, 0.2s 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...