/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/float_req_bl_0720.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:08:26,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:08:26,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:08:26,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:08:26,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:08:26,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:08:26,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:08:26,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:08:26,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:08:26,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:08:26,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:08:26,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:08:26,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:08:26,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:08:26,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:08:26,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:08:26,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:08:26,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:08:26,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:08:26,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:08:26,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:08:26,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:08:26,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:08:26,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:08:26,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:08:26,172 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:08:26,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:08:26,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:08:26,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:08:26,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:08:26,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:08:26,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:08:26,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:08:26,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:08:26,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:08:26,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:08:26,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:08:26,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:08:26,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:08:26,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:08:26,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:08:26,192 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 09:08:26,246 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:08:26,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:08:26,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:08:26,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:08:26,252 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:08:26,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:08:26,253 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:08:26,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:08:26,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:08:26,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:08:26,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:08:26,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:08:26,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:08:26,255 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:08:26,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:08:26,255 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:08:26,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:08:26,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:08:26,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:08:26,256 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:08:26,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:08:26,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:08:26,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:08:26,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:08:26,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:08:26,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:08:26,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:08:26,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:08:26,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:08:26,258 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:08:26,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:08:26,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:08:26,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:08:26,743 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:08:26,744 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:08:26,745 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0720.c [2020-10-29 09:08:26,829 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c1d81c89/749f80c3786446eca031f39d30c275a2/FLAG7afed015e [2020-10-29 09:08:27,532 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:08:27,533 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0720.c [2020-10-29 09:08:27,541 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c1d81c89/749f80c3786446eca031f39d30c275a2/FLAG7afed015e [2020-10-29 09:08:27,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c1d81c89/749f80c3786446eca031f39d30c275a2 [2020-10-29 09:08:27,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:08:27,895 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:08:27,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:08:27,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:08:27,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:08:27,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:08:27" (1/1) ... [2020-10-29 09:08:27,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65e41b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:27, skipping insertion in model container [2020-10-29 09:08:27,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:08:27" (1/1) ... [2020-10-29 09:08:27,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:08:27,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:08:28,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:08:28,129 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:08:28,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:08:28,229 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:08:28,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:28 WrapperNode [2020-10-29 09:08:28,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:08:28,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:08:28,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:08:28,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:08:28,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:28" (1/1) ... [2020-10-29 09:08:28,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:28" (1/1) ... [2020-10-29 09:08:28,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:28" (1/1) ... [2020-10-29 09:08:28,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:28" (1/1) ... [2020-10-29 09:08:28,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:28" (1/1) ... [2020-10-29 09:08:28,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:28" (1/1) ... [2020-10-29 09:08:28,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:28" (1/1) ... [2020-10-29 09:08:28,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:08:28,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:08:28,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:08:28,349 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:08:28,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:28" (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 09:08:28,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:08:28,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:08:28,454 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:08:28,454 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-29 09:08:28,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-10-29 09:08:28,455 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:08:28,455 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:08:28,455 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:08:28,455 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:08:28,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:08:28,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-29 09:08:28,456 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-29 09:08:28,456 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-10-29 09:08:28,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-29 09:08:28,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:08:28,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:08:28,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:08:28,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-29 09:08:28,457 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:08:28,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:08:28,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:08:28,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:08:29,088 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:08:29,088 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-29 09:08:29,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:08:29 BoogieIcfgContainer [2020-10-29 09:08:29,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:08:29,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:08:29,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:08:29,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:08:29,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:08:27" (1/3) ... [2020-10-29 09:08:29,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5a7afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:08:29, skipping insertion in model container [2020-10-29 09:08:29,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:28" (2/3) ... [2020-10-29 09:08:29,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5a7afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:08:29, skipping insertion in model container [2020-10-29 09:08:29,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:08:29" (3/3) ... [2020-10-29 09:08:29,102 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0720.c [2020-10-29 09:08:29,117 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:08:29,123 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:08:29,139 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:08:29,168 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:08:29,168 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:08:29,168 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:08:29,168 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:08:29,168 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:08:29,169 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:08:29,169 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:08:29,169 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:08:29,187 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-10-29 09:08:29,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 09:08:29,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:29,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:08:29,199 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:29,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:29,207 INFO L82 PathProgramCache]: Analyzing trace with hash -538607920, now seen corresponding path program 1 times [2020-10-29 09:08:29,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:29,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674341419] [2020-10-29 09:08:29,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:29,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:29,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:29,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:29,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 09:08:29,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:29,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-29 09:08:29,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:29,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 09:08:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:29,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:08:29,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:08:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:29,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:29,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:29,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:08:29,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:29,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 09:08:29,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:29,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:29,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:29,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:08:29,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:29,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:08:29,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:08:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:29,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:29,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:29,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:08:29,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:29,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:08:29,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:29,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:29,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:29,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 09:08:29,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:29,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:08:29,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 09:08:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:29,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:29,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:29,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:08:29,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:29,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:08:29,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:29,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:29,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:29,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:08:29,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:29,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:08:29,781 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 09:08:29,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674341419] [2020-10-29 09:08:29,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:08:29,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:08:29,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391328413] [2020-10-29 09:08:29,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:08:29,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:08:29,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:08:29,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:08:29,809 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 4 states. [2020-10-29 09:08:30,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:08:30,074 INFO L93 Difference]: Finished difference Result 89 states and 124 transitions. [2020-10-29 09:08:30,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:08:30,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-29 09:08:30,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:08:30,087 INFO L225 Difference]: With dead ends: 89 [2020-10-29 09:08:30,087 INFO L226 Difference]: Without dead ends: 43 [2020-10-29 09:08:30,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:08:30,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-29 09:08:30,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-29 09:08:30,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 09:08:30,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2020-10-29 09:08:30,139 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 22 [2020-10-29 09:08:30,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:08:30,140 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2020-10-29 09:08:30,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:08:30,141 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2020-10-29 09:08:30,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 09:08:30,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:30,142 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 09:08:30,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:08:30,143 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:30,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:30,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1113394345, now seen corresponding path program 1 times [2020-10-29 09:08:30,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:30,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729237928] [2020-10-29 09:08:30,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:08:30,186 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:08:30,187 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:08:30,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:08:30,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:08:30 BoogieIcfgContainer [2020-10-29 09:08:30,221 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:08:30,226 INFO L168 Benchmark]: Toolchain (without parser) took 2330.99 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 63.0 MB in the end (delta: 62.4 MB). Peak memory consumption was 63.2 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:30,227 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:08:30,228 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.53 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 113.6 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:30,230 INFO L168 Benchmark]: Boogie Preprocessor took 114.02 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 111.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:30,231 INFO L168 Benchmark]: RCFGBuilder took 742.31 ms. Allocated memory is still 151.0 MB. Free memory was 111.6 MB in the beginning and 127.0 MB in the end (delta: -15.4 MB). Peak memory consumption was 18.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:30,233 INFO L168 Benchmark]: TraceAbstraction took 1128.14 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 63.0 MB in the end (delta: 63.4 MB). Peak memory consumption was 64.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:30,244 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 335.53 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 113.6 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 114.02 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 111.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 742.31 ms. Allocated memory is still 151.0 MB. Free memory was 111.6 MB in the beginning and 127.0 MB in the end (delta: -15.4 MB). Peak memory consumption was 18.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1128.14 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 63.0 MB in the end (delta: 63.4 MB). Peak memory consumption was 64.0 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 someBinaryFLOATComparisonOperation at line 15, overapproximation of someBinaryArithmeticFLOAToperation at line 32, overapproximation of bitwiseAnd at line 29. Possible FailurePath: [L17] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L93] float x = 0.0f / 0.0f; [L94] CALL, EXPR __ieee754_sqrtf(x) [L20] float z; [L21] __uint32_t r, hx; [L22] __int32_t ix, s, q, m, t, i; [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (ix) = gf_u.word [L29] hx = ix & 0x7fffffff [L31] COND TRUE !((hx) < 0x7f800000L) [L32] return x * x + x; [L94] RET, EXPR __ieee754_sqrtf(x) [L94] float res = __ieee754_sqrtf(x); [L97] CALL, EXPR isnan_float(res) [L15] return x != x; [L97] RET, EXPR isnan_float(res) [L97] COND TRUE !isnan_float(res) [L98] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0720.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 10 SDslu, 45 SDs, 0 SdLazy, 51 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 1449 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...