/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=BIGGEST --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 -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0661b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:30:51,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:30:51,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:30:51,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:30:51,144 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:30:51,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:30:51,154 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:30:51,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:30:51,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:30:51,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:30:51,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:30:51,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:30:51,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:30:51,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:30:51,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:30:51,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:30:51,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:30:51,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:30:51,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:30:51,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:30:51,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:30:51,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:30:51,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:30:51,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:30:51,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:30:51,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:30:51,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:30:51,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:30:51,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:30:51,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:30:51,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:30:51,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:30:51,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:30:51,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:30:51,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:30:51,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:30:51,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:30:51,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:30:51,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:30:51,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:30:51,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:30:51,220 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 [2020-10-12 15:30:51,241 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:30:51,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:30:51,242 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:30:51,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:30:51,243 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:30:51,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:30:51,243 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:30:51,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:30:51,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:30:51,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:30:51,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:30:51,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:30:51,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:30:51,244 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:30:51,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:30:51,245 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:30:51,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:30:51,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:30:51,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:30:51,246 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:30:51,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:30:51,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:30:51,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:30:51,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:30:51,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:30:51,247 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:30:51,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:30:51,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:30:51,247 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:30:51,248 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:30:51,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:30:51,557 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:30:51,560 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:30:51,561 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:30:51,562 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:30:51,562 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0661b.c [2020-10-12 15:30:51,640 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/244036570/0f4e9c2aa4be464b8a615500824bd92a/FLAG46aa98ed0 [2020-10-12 15:30:52,102 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:30:52,103 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0661b.c [2020-10-12 15:30:52,112 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/244036570/0f4e9c2aa4be464b8a615500824bd92a/FLAG46aa98ed0 [2020-10-12 15:30:52,472 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/244036570/0f4e9c2aa4be464b8a615500824bd92a [2020-10-12 15:30:52,480 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:30:52,482 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:30:52,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:30:52,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:30:52,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:30:52,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:30:52" (1/1) ... [2020-10-12 15:30:52,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@187bf361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:52, skipping insertion in model container [2020-10-12 15:30:52,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:30:52" (1/1) ... [2020-10-12 15:30:52,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:30:52,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:30:52,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:30:52,792 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:30:52,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:30:52,962 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:30:52,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:52 WrapperNode [2020-10-12 15:30:52,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:30:52,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:30:52,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:30:52,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:30:52,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:52" (1/1) ... [2020-10-12 15:30:52,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:52" (1/1) ... [2020-10-12 15:30:52,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:52" (1/1) ... [2020-10-12 15:30:52,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:52" (1/1) ... [2020-10-12 15:30:53,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:52" (1/1) ... [2020-10-12 15:30:53,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:52" (1/1) ... [2020-10-12 15:30:53,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:52" (1/1) ... [2020-10-12 15:30:53,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:30:53,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:30:53,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:30:53,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:30:53,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:52" (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 [2020-10-12 15:30:53,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:30:53,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:30:53,099 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-12 15:30:53,099 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-12 15:30:53,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-12 15:30:53,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-12 15:30:53,099 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:30:53,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:30:53,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-12 15:30:53,100 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-12 15:30:53,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 15:30:53,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-12 15:30:53,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:30:53,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:30:53,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:30:53,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-12 15:30:53,101 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-12 15:30:53,101 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-12 15:30:53,101 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-12 15:30:53,101 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:30:53,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:30:53,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-12 15:30:53,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:30:53,776 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:30:53,777 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-12 15:30:53,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:30:53 BoogieIcfgContainer [2020-10-12 15:30:53,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:30:53,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:30:53,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:30:53,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:30:53,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:30:52" (1/3) ... [2020-10-12 15:30:53,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c027f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:30:53, skipping insertion in model container [2020-10-12 15:30:53,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:52" (2/3) ... [2020-10-12 15:30:53,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c027f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:30:53, skipping insertion in model container [2020-10-12 15:30:53,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:30:53" (3/3) ... [2020-10-12 15:30:53,798 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0661b.c [2020-10-12 15:30:53,809 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:30:53,820 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:30:53,835 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:30:53,857 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:30:53,858 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:30:53,858 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:30:53,858 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:30:53,858 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:30:53,858 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:30:53,859 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:30:53,859 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:30:53,879 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states. [2020-10-12 15:30:53,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 15:30:53,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:30:53,887 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] [2020-10-12 15:30:53,887 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:30:53,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:30:53,892 INFO L82 PathProgramCache]: Analyzing trace with hash 913677384, now seen corresponding path program 1 times [2020-10-12 15:30:53,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:30:53,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958581188] [2020-10-12 15:30:53,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:30:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:30:54,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:30:54,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:30:54,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:30:54,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 15:30:54,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:30:54,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-12 15:30:54,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:30:54,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:30:54,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 15:30:54,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:30:54,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 15:30:54,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:30:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:30:54,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:30:54,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:30:54,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:30:54,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:30:54,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 15:30:54,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:30:54,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:30:54,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:30:54,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:30:54,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:30:54,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 15:30:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:30:54,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:30:54,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:30:54,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:30:54,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 15:30:54,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:30:54,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 15:30:54,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:30:54,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:30:54,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:30:54,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:30:54,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:30:54,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:30:54,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958581188] [2020-10-12 15:30:54,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:30:54,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:30:54,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652540582] [2020-10-12 15:30:54,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:30:54,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:30:54,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:30:54,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:30:54,651 INFO L87 Difference]: Start difference. First operand 112 states. Second operand 4 states. [2020-10-12 15:30:55,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:30:55,076 INFO L93 Difference]: Finished difference Result 218 states and 342 transitions. [2020-10-12 15:30:55,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:30:55,078 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-12 15:30:55,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:30:55,090 INFO L225 Difference]: With dead ends: 218 [2020-10-12 15:30:55,091 INFO L226 Difference]: Without dead ends: 107 [2020-10-12 15:30:55,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:30:55,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-12 15:30:55,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-10-12 15:30:55,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-12 15:30:55,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 147 transitions. [2020-10-12 15:30:55,153 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 147 transitions. Word has length 20 [2020-10-12 15:30:55,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:30:55,154 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 147 transitions. [2020-10-12 15:30:55,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:30:55,154 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 147 transitions. [2020-10-12 15:30:55,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-12 15:30:55,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:30:55,156 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] [2020-10-12 15:30:55,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:30:55,156 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:30:55,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:30:55,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1713483969, now seen corresponding path program 1 times [2020-10-12 15:30:55,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:30:55,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305699925] [2020-10-12 15:30:55,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:30:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 15:30:55,203 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 15:30:55,203 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 15:30:55,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:30:55,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:30:55 BoogieIcfgContainer [2020-10-12 15:30:55,227 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:30:55,230 INFO L168 Benchmark]: Toolchain (without parser) took 2748.08 ms. Allocated memory was 141.0 MB in the beginning and 234.4 MB in the end (delta: 93.3 MB). Free memory was 103.9 MB in the beginning and 119.1 MB in the end (delta: -15.2 MB). Peak memory consumption was 78.1 MB. Max. memory is 7.1 GB. [2020-10-12 15:30:55,231 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 15:30:55,235 INFO L168 Benchmark]: CACSL2BoogieTranslator took 479.71 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 103.7 MB in the beginning and 178.0 MB in the end (delta: -74.3 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-10-12 15:30:55,236 INFO L168 Benchmark]: Boogie Preprocessor took 74.42 ms. Allocated memory is still 203.4 MB. Free memory was 178.0 MB in the beginning and 174.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-10-12 15:30:55,237 INFO L168 Benchmark]: RCFGBuilder took 749.84 ms. Allocated memory is still 203.4 MB. Free memory was 174.1 MB in the beginning and 128.8 MB in the end (delta: 45.3 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. [2020-10-12 15:30:55,238 INFO L168 Benchmark]: TraceAbstraction took 1437.39 ms. Allocated memory was 203.4 MB in the beginning and 234.4 MB in the end (delta: 30.9 MB). Free memory was 128.2 MB in the beginning and 119.1 MB in the end (delta: 9.0 MB). Peak memory consumption was 40.0 MB. Max. memory is 7.1 GB. [2020-10-12 15:30:55,247 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 479.71 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 103.7 MB in the beginning and 178.0 MB in the end (delta: -74.3 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 74.42 ms. Allocated memory is still 203.4 MB. Free memory was 178.0 MB in the beginning and 174.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 749.84 ms. Allocated memory is still 203.4 MB. Free memory was 174.1 MB in the beginning and 128.8 MB in the end (delta: 45.3 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1437.39 ms. Allocated memory was 203.4 MB in the beginning and 234.4 MB in the end (delta: 30.9 MB). Free memory was 128.2 MB in the beginning and 119.1 MB in the end (delta: 9.0 MB). Peak memory consumption was 40.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 271]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 162, overapproximation of someUnaryDOUBLEoperation at line 52, overapproximation of bitwiseAnd at line 160, overapproximation of someBinaryArithmeticDOUBLEoperation at line 163, overapproximation of someBinaryDOUBLEComparisonOperation at line 270. Possible FailurePath: [L37-L42] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L44-L49] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L51-L58] 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, }; [L60-L62] 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; [L139-L140] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L264] double x = __VERIFIER_nondet_double(); [L265] double y = 0.0; [L267] COND TRUE x > 0.0 [L268] CALL, EXPR __ieee754_atan2(y, x) [L143] double z; [L144] __int32_t k, m, hx, hy, ix, iy; [L145] __uint32_t lx, ly; [L148] ieee_double_shape_type ew_u; [L149] ew_u.value = (x) [L150] EXPR ew_u.parts.msw [L150] (hx) = ew_u.parts.msw [L151] EXPR ew_u.parts.lsw [L151] (lx) = ew_u.parts.lsw [L153] ix = hx & 0x7fffffff [L155] ieee_double_shape_type ew_u; [L156] ew_u.value = (y) [L157] EXPR ew_u.parts.msw [L157] (hy) = ew_u.parts.msw [L158] EXPR ew_u.parts.lsw [L158] (ly) = ew_u.parts.lsw [L160] iy = hy & 0x7fffffff [L161-L162] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L163] return x + y; [L268] RET, EXPR __ieee754_atan2(y, x) [L268] double res = __ieee754_atan2(y, x); [L270] EXPR res == 0.0 && __signbit_double(res) == 0 [L270] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L271] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 112 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 148 SDtfs, 18 SDslu, 133 SDs, 0 SdLazy, 148 SolverSat, 14 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred 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, 0.5s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 1615 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...