/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0910a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:03:40,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:03:40,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:03:41,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:03:41,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:03:41,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:03:41,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:03:41,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:03:41,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:03:41,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:03:41,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:03:41,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:03:41,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:03:41,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:03:41,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:03:41,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:03:41,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:03:41,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:03:41,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:03:41,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:03:41,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:03:41,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:03:41,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:03:41,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:03:41,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:03:41,098 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:03:41,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:03:41,102 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:03:41,102 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:03:41,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:03:41,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:03:41,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:03:41,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:03:41,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:03:41,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:03:41,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:03:41,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:03:41,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:03:41,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:03:41,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:03:41,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:03:41,114 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 01:03:41,175 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:03:41,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:03:41,181 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:03:41,181 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:03:41,181 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:03:41,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:03:41,182 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:03:41,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:03:41,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:03:41,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:03:41,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:03:41,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:03:41,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:03:41,185 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:03:41,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:03:41,185 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:03:41,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:03:41,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:03:41,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:03:41,186 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:03:41,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:03:41,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:03:41,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:03:41,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:03:41,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:03:41,188 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:03:41,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:03:41,188 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:03:41,188 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:03:41,189 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:03:41,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:03:41,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:03:41,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:03:41,694 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:03:41,695 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:03:41,696 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0910a.c [2020-10-27 01:03:41,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/774abf97e/17892c17fe394381905dbfbe77538520/FLAG23d5e33e0 [2020-10-27 01:03:42,496 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:03:42,496 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0910a.c [2020-10-27 01:03:42,509 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/774abf97e/17892c17fe394381905dbfbe77538520/FLAG23d5e33e0 [2020-10-27 01:03:42,859 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/774abf97e/17892c17fe394381905dbfbe77538520 [2020-10-27 01:03:42,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:03:42,870 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:03:42,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:03:42,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:03:42,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:03:42,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:03:42" (1/1) ... [2020-10-27 01:03:42,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22d2294d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:42, skipping insertion in model container [2020-10-27 01:03:42,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:03:42" (1/1) ... [2020-10-27 01:03:42,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:03:42,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:03:43,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:03:43,173 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:03:43,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:03:43,231 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:03:43,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:43 WrapperNode [2020-10-27 01:03:43,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:03:43,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:03:43,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:03:43,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:03:43,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:43" (1/1) ... [2020-10-27 01:03:43,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:43" (1/1) ... [2020-10-27 01:03:43,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:43" (1/1) ... [2020-10-27 01:03:43,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:43" (1/1) ... [2020-10-27 01:03:43,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:43" (1/1) ... [2020-10-27 01:03:43,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:43" (1/1) ... [2020-10-27 01:03:43,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:43" (1/1) ... [2020-10-27 01:03:43,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:03:43,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:03:43,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:03:43,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:03:43,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:03:43,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:03:43,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:03:43,391 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:03:43,391 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-10-27 01:03:43,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_logf [2020-10-27 01:03:43,392 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:03:43,392 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:03:43,392 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:03:43,392 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:03:43,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:03:43,393 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-10-27 01:03:43,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:03:43,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:03:43,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:03:43,393 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_logf [2020-10-27 01:03:43,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:03:43,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:03:43,394 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:03:43,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:03:43,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:03:43,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:03:43,919 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:03:43,919 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-27 01:03:43,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:03:43 BoogieIcfgContainer [2020-10-27 01:03:43,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:03:43,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:03:43,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:03:43,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:03:43,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:03:42" (1/3) ... [2020-10-27 01:03:43,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e96f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:03:43, skipping insertion in model container [2020-10-27 01:03:43,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:03:43" (2/3) ... [2020-10-27 01:03:43,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e96f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:03:43, skipping insertion in model container [2020-10-27 01:03:43,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:03:43" (3/3) ... [2020-10-27 01:03:43,931 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0910a.c [2020-10-27 01:03:43,945 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:03:43,951 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:03:43,964 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:03:43,993 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:03:43,993 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:03:43,993 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:03:43,993 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:03:43,993 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:03:43,994 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:03:43,994 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:03:43,994 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:03:44,015 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-10-27 01:03:44,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 01:03:44,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:03:44,023 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, 1] [2020-10-27 01:03:44,024 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:03:44,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:03:44,030 INFO L82 PathProgramCache]: Analyzing trace with hash -874580844, now seen corresponding path program 1 times [2020-10-27 01:03:44,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:03:44,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523722123] [2020-10-27 01:03:44,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:03:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:44,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:44,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:44,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:44,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 01:03:44,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:03:44,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-27 01:03:44,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:44,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:44,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 01:03:44,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:44,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 01:03:44,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:03:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:44,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:44,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:44,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:03:44,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:03:44,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 01:03:44,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:44,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:44,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:03:44,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:44,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:03:44,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:03:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:44,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:44,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:44,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:03:44,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:03:44,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:03:44,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:44,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:44,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:03:44,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:44,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 01:03:44,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 01:03:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:03:44,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:44,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:03:44,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:03:44,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:03:44,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:03:44,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 01:03:44,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:03:44,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:03:44,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:03:44,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:03:44,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:03:44,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:03:44,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523722123] [2020-10-27 01:03:44,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:03:44,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:03:44,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923054749] [2020-10-27 01:03:44,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:03:44,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:03:44,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:03:44,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:03:44,765 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 4 states. [2020-10-27 01:03:45,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:03:45,055 INFO L93 Difference]: Finished difference Result 89 states and 129 transitions. [2020-10-27 01:03:45,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:03:45,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-27 01:03:45,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:03:45,085 INFO L225 Difference]: With dead ends: 89 [2020-10-27 01:03:45,086 INFO L226 Difference]: Without dead ends: 43 [2020-10-27 01:03:45,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:03:45,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-27 01:03:45,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-27 01:03:45,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-27 01:03:45,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2020-10-27 01:03:45,140 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 24 [2020-10-27 01:03:45,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:03:45,141 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2020-10-27 01:03:45,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:03:45,141 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2020-10-27 01:03:45,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 01:03:45,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:03:45,143 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, 1, 1, 1] [2020-10-27 01:03:45,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:03:45,144 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:03:45,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:03:45,145 INFO L82 PathProgramCache]: Analyzing trace with hash 2053326009, now seen corresponding path program 1 times [2020-10-27 01:03:45,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:03:45,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844502338] [2020-10-27 01:03:45,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:03:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:03:45,196 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:03:45,196 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:03:45,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:03:45,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:03:45 BoogieIcfgContainer [2020-10-27 01:03:45,220 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:03:45,223 INFO L168 Benchmark]: Toolchain (without parser) took 2358.07 ms. Allocated memory is still 156.2 MB. Free memory was 131.2 MB in the beginning and 127.1 MB in the end (delta: 4.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:45,223 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 156.2 MB. Free memory is still 128.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:03:45,224 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.25 ms. Allocated memory is still 156.2 MB. Free memory was 130.6 MB in the beginning and 118.9 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:45,225 INFO L168 Benchmark]: Boogie Preprocessor took 74.72 ms. Allocated memory is still 156.2 MB. Free memory was 118.9 MB in the beginning and 116.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:45,226 INFO L168 Benchmark]: RCFGBuilder took 613.43 ms. Allocated memory is still 156.2 MB. Free memory was 116.8 MB in the beginning and 128.8 MB in the end (delta: -11.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:45,227 INFO L168 Benchmark]: TraceAbstraction took 1296.61 ms. Allocated memory is still 156.2 MB. Free memory was 128.3 MB in the beginning and 127.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 8.0 GB. [2020-10-27 01:03:45,231 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 156.2 MB. Free memory is still 128.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 358.25 ms. Allocated memory is still 156.2 MB. Free memory was 130.6 MB in the beginning and 118.9 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 74.72 ms. Allocated memory is still 156.2 MB. Free memory was 118.9 MB in the beginning and 116.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 613.43 ms. Allocated memory is still 156.2 MB. Free memory was 116.8 MB in the beginning and 128.8 MB in the end (delta: -11.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1296.61 ms. Allocated memory is still 156.2 MB. Free memory was 128.3 MB in the beginning and 127.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.2 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 someBinaryArithmeticFLOAToperation at line 45, overapproximation of bitwiseAnd at line 21. Possible FailurePath: [L25-L29] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L31] static const float zero_log = 0.0; [L117] float x = 0.0f; [L118] CALL, EXPR __ieee754_logf(x) [L34] float hfsq, f, s, z, R, w, t1, t2, dk; [L35] __int32_t k, ix, i, j; [L38] ieee_float_shape_type gf_u; [L39] gf_u.value = (x) [L40] EXPR gf_u.word [L40] (ix) = gf_u.word [L43] k = 0 [L44] COND TRUE ((ix & 0x7fffffff) == 0) [L45] return -two25_log / zero_log; [L118] RET, EXPR __ieee754_logf(x) [L118] float res = __ieee754_logf(x); [L121] CALL, EXPR isinf_float(res) [L15] __int32_t ix; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (ix) = gf_u.word [L21] ix &= 0x7fffffff [L22] return ((ix) == 0x7f800000L); [L121] RET, EXPR isinf_float(res) [L121] COND TRUE !isinf_float(res) [L122] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0910a.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: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 8 SDslu, 46 SDs, 0 SdLazy, 53 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 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, 0.5s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 2530 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...