/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_0981.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:08:43,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:08:43,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:08:44,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:08:44,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:08:44,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:08:44,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:08:44,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:08:44,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:08:44,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:08:44,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:08:44,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:08:44,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:08:44,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:08:44,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:08:44,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:08:44,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:08:44,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:08:44,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:08:44,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:08:44,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:08:44,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:08:44,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:08:44,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:08:44,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:08:44,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:08:44,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:08:44,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:08:44,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:08:44,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:08:44,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:08:44,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:08:44,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:08:44,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:08:44,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:08:44,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:08:44,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:08:44,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:08:44,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:08:44,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:08:44,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:08:44,153 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 09:08:44,227 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:08:44,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:08:44,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:08:44,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:08:44,233 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:08:44,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:08:44,234 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:08:44,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:08:44,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:08:44,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:08:44,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:08:44,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:08:44,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:08:44,236 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:08:44,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:08:44,237 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:08:44,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:08:44,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:08:44,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:08:44,237 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:08:44,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:08:44,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:08:44,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:08:44,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:08:44,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:08:44,239 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:08:44,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:08:44,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:08:44,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:08:44,239 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:08:44,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:08:44,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:08:44,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:08:44,703 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:08:44,704 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:08:44,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0981.c [2020-10-29 09:08:44,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecc6e90f2/ae5c6ab46af9416f9d037803c558716f/FLAGf818dfa5b [2020-10-29 09:08:45,507 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:08:45,508 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0981.c [2020-10-29 09:08:45,520 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecc6e90f2/ae5c6ab46af9416f9d037803c558716f/FLAGf818dfa5b [2020-10-29 09:08:45,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecc6e90f2/ae5c6ab46af9416f9d037803c558716f [2020-10-29 09:08:45,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:08:45,820 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:08:45,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:08:45,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:08:45,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:08:45,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:08:45" (1/1) ... [2020-10-29 09:08:45,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bd496bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:45, skipping insertion in model container [2020-10-29 09:08:45,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:08:45" (1/1) ... [2020-10-29 09:08:45,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:08:45,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:08:46,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:08:46,088 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:08:46,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:08:46,152 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:08:46,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:46 WrapperNode [2020-10-29 09:08:46,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:08:46,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:08:46,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:08:46,154 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:08:46,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:46" (1/1) ... [2020-10-29 09:08:46,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:46" (1/1) ... [2020-10-29 09:08:46,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:46" (1/1) ... [2020-10-29 09:08:46,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:46" (1/1) ... [2020-10-29 09:08:46,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:46" (1/1) ... [2020-10-29 09:08:46,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:46" (1/1) ... [2020-10-29 09:08:46,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:46" (1/1) ... [2020-10-29 09:08:46,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:08:46,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:08:46,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:08:46,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:08:46,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:46" (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 09:08:46,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:08:46,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:08:46,301 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:08:46,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_logf [2020-10-29 09:08:46,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_log10f [2020-10-29 09:08:46,302 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-10-29 09:08:46,302 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:08:46,302 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:08:46,302 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:08:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:08:46,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:08:46,304 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_logf [2020-10-29 09:08:46,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-29 09:08:46,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:08:46,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:08:46,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:08:46,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-29 09:08:46,306 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_log10f [2020-10-29 09:08:46,306 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-10-29 09:08:46,306 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:08:46,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:08:46,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:08:46,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:08:47,091 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:08:47,091 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-29 09:08:47,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:08:47 BoogieIcfgContainer [2020-10-29 09:08:47,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:08:47,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:08:47,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:08:47,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:08:47,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:08:45" (1/3) ... [2020-10-29 09:08:47,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b276b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:08:47, skipping insertion in model container [2020-10-29 09:08:47,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:46" (2/3) ... [2020-10-29 09:08:47,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b276b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:08:47, skipping insertion in model container [2020-10-29 09:08:47,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:08:47" (3/3) ... [2020-10-29 09:08:47,106 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0981.c [2020-10-29 09:08:47,121 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:08:47,127 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:08:47,141 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:08:47,174 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:08:47,175 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:08:47,175 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:08:47,175 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:08:47,175 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:08:47,175 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:08:47,175 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:08:47,176 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:08:47,195 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-10-29 09:08:47,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-29 09:08:47,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:47,204 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] [2020-10-29 09:08:47,204 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:47,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:47,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1674034590, now seen corresponding path program 1 times [2020-10-29 09:08:47,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:47,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992766419] [2020-10-29 09:08:47,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:47,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:47,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:47,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:47,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 09:08:47,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:08:47,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-29 09:08:47,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:47,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:47,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:47,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 09:08:47,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:47,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 09:08:48,049 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-29 09:08:48,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:08:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:48,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:48,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:48,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:08:48,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:48,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 09:08:48,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:48,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:48,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:48,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:08:48,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:48,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:08:48,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:08:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:48,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:48,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:48,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:08:48,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:48,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:08:48,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:48,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:48,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:48,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 09:08:48,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:48,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:08:48,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 09:08:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:48,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:48,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:48,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:48,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:08:48,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:08:48,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 09:08:48,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:48,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:48,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:48,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 09:08:48,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:48,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:08:48,182 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 09:08:48,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992766419] [2020-10-29 09:08:48,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:08:48,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:08:48,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571826271] [2020-10-29 09:08:48,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:08:48,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:08:48,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:08:48,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:08:48,211 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 4 states. [2020-10-29 09:08:48,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:08:48,622 INFO L93 Difference]: Finished difference Result 123 states and 184 transitions. [2020-10-29 09:08:48,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:08:48,625 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-29 09:08:48,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:08:48,642 INFO L225 Difference]: With dead ends: 123 [2020-10-29 09:08:48,643 INFO L226 Difference]: Without dead ends: 60 [2020-10-29 09:08:48,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:08:48,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-29 09:08:48,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-10-29 09:08:48,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-29 09:08:48,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2020-10-29 09:08:48,754 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 24 [2020-10-29 09:08:48,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:08:48,755 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2020-10-29 09:08:48,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:08:48,755 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2020-10-29 09:08:48,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 09:08:48,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:48,757 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] [2020-10-29 09:08:48,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:08:48,758 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:48,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:48,759 INFO L82 PathProgramCache]: Analyzing trace with hash -783601326, now seen corresponding path program 1 times [2020-10-29 09:08:48,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:48,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861868576] [2020-10-29 09:08:48,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:08:48,805 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:08:48,805 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:08:48,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:08:48,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:08:48 BoogieIcfgContainer [2020-10-29 09:08:48,830 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:08:48,832 INFO L168 Benchmark]: Toolchain (without parser) took 3016.52 ms. Allocated memory was 153.1 MB in the beginning and 195.0 MB in the end (delta: 41.9 MB). Free memory was 127.9 MB in the beginning and 166.2 MB in the end (delta: -38.3 MB). Peak memory consumption was 4.8 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:48,833 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 153.1 MB. Free memory is still 127.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:08:48,834 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.16 ms. Allocated memory is still 153.1 MB. Free memory was 127.2 MB in the beginning and 114.4 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:48,834 INFO L168 Benchmark]: Boogie Preprocessor took 56.26 ms. Allocated memory is still 153.1 MB. Free memory was 114.4 MB in the beginning and 112.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:48,835 INFO L168 Benchmark]: RCFGBuilder took 879.73 ms. Allocated memory is still 153.1 MB. Free memory was 112.0 MB in the beginning and 83.2 MB in the end (delta: 28.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:48,836 INFO L168 Benchmark]: TraceAbstraction took 1732.88 ms. Allocated memory was 153.1 MB in the beginning and 195.0 MB in the end (delta: 41.9 MB). Free memory was 82.8 MB in the beginning and 166.2 MB in the end (delta: -83.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:08:48,840 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 153.1 MB. Free memory is still 127.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 331.16 ms. Allocated memory is still 153.1 MB. Free memory was 127.2 MB in the beginning and 114.4 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.26 ms. Allocated memory is still 153.1 MB. Free memory was 114.4 MB in the beginning and 112.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 879.73 ms. Allocated memory is still 153.1 MB. Free memory was 112.0 MB in the beginning and 83.2 MB in the end (delta: 28.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1732.88 ms. Allocated memory was 153.1 MB in the beginning and 195.0 MB in the end (delta: 41.9 MB). Free memory was 82.8 MB in the beginning and 166.2 MB in the end (delta: -83.3 MB). There was no memory consumed. 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 118, overapproximation of bitwiseAnd at line 153. Possible FailurePath: [L13-L17] 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; [L19] static const float zero_log = 0.0; [L99-L102] static const float two25_log10 = 3.3554432000e+07, ivln10_log10 = 4.3429449201e-01, log10_2hi_log10 = 3.0102920532e-01, log10_2lo_log10 = 7.9034151668e-07; [L104] static const float zero = 0.0; [L165] float x = 1.0f / 0.0f; [L166] CALL, EXPR __ieee754_log10f(x) [L107] float y, z; [L108] __int32_t i, k, hx; [L111] ieee_float_shape_type gf_u; [L112] gf_u.value = (x) [L113] EXPR gf_u.word [L113] (hx) = gf_u.word [L116] k = 0 [L117] COND TRUE ((hx & 0x7fffffff) == 0) [L118] return -two25_log10 / zero; [L166] RET, EXPR __ieee754_log10f(x) [L166] float res = __ieee754_log10f(x); [L169] CALL, EXPR isinf_float(res) [L147] __int32_t ix; [L149] ieee_float_shape_type gf_u; [L150] gf_u.value = (x) [L151] EXPR gf_u.word [L151] (ix) = gf_u.word [L153] ix &= 0x7fffffff [L154] return ((ix) == 0x7f800000L); [L169] RET, EXPR isinf_float(res) [L169] COND TRUE !isinf_float(res) [L170] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0981.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 74 SDtfs, 10 SDslu, 63 SDs, 0 SdLazy, 75 SolverSat, 10 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, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred 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, 0.7s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 2875 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...