/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_1270a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:09:10,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:09:10,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:09:10,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:09:10,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:09:10,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:09:10,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:09:10,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:09:10,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:09:10,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:09:10,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:09:10,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:09:10,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:09:10,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:09:10,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:09:10,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:09:10,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:09:10,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:09:10,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:09:10,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:09:10,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:09:10,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:09:10,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:09:10,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:09:10,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:09:10,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:09:10,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:09:10,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:09:10,275 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:09:10,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:09:10,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:09:10,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:09:10,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:09:10,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:09:10,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:09:10,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:09:10,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:09:10,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:09:10,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:09:10,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:09:10,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:09:10,287 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 09:09:10,334 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:09:10,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:09:10,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:09:10,339 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:09:10,339 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:09:10,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:09:10,340 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:09:10,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:09:10,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:09:10,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:09:10,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:09:10,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:09:10,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:09:10,342 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:09:10,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:09:10,342 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:09:10,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:09:10,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:09:10,343 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:09:10,343 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:09:10,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:09:10,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:09:10,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:09:10,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:09:10,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:09:10,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:09:10,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:09:10,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:09:10,345 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:09:10,345 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:09:10,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:09:10,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:09:10,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:09:10,773 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:09:10,773 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:09:10,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1270a.c [2020-10-29 09:09:10,854 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/209497283/e2c959c2be7145c8ade6b4dfd88082a5/FLAGad2856e95 [2020-10-29 09:09:11,592 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:09:11,593 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1270a.c [2020-10-29 09:09:11,604 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/209497283/e2c959c2be7145c8ade6b4dfd88082a5/FLAGad2856e95 [2020-10-29 09:09:11,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/209497283/e2c959c2be7145c8ade6b4dfd88082a5 [2020-10-29 09:09:11,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:09:11,961 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:09:11,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:09:11,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:09:11,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:09:11,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:09:11" (1/1) ... [2020-10-29 09:09:11,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e09aad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:11, skipping insertion in model container [2020-10-29 09:09:11,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:09:11" (1/1) ... [2020-10-29 09:09:11,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:09:12,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:09:12,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:09:12,330 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:09:12,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:09:12,455 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:09:12,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:12 WrapperNode [2020-10-29 09:09:12,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:09:12,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:09:12,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:09:12,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:09:12,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:12" (1/1) ... [2020-10-29 09:09:12,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:12" (1/1) ... [2020-10-29 09:09:12,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:12" (1/1) ... [2020-10-29 09:09:12,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:12" (1/1) ... [2020-10-29 09:09:12,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:12" (1/1) ... [2020-10-29 09:09:12,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:12" (1/1) ... [2020-10-29 09:09:12,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:12" (1/1) ... [2020-10-29 09:09:12,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:09:12,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:09:12,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:09:12,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:09:12,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:12" (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 09:09:12,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:09:12,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:09:12,623 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:09:12,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-10-29 09:09:12,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_hypotf [2020-10-29 09:09:12,624 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-10-29 09:09:12,625 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:09:12,625 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:09:12,626 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:09:12,626 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:09:12,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:09:12,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-29 09:09:12,628 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-10-29 09:09:12,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-29 09:09:12,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:09:12,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:09:12,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:09:12,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-29 09:09:12,630 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_hypotf [2020-10-29 09:09:12,630 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-10-29 09:09:12,631 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:09:12,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:09:12,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:09:12,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:09:13,414 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:09:13,417 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-10-29 09:09:13,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:09:13 BoogieIcfgContainer [2020-10-29 09:09:13,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:09:13,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:09:13,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:09:13,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:09:13,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:09:11" (1/3) ... [2020-10-29 09:09:13,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5787b65f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:09:13, skipping insertion in model container [2020-10-29 09:09:13,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:12" (2/3) ... [2020-10-29 09:09:13,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5787b65f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:09:13, skipping insertion in model container [2020-10-29 09:09:13,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:09:13" (3/3) ... [2020-10-29 09:09:13,435 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1270a.c [2020-10-29 09:09:13,447 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:09:13,453 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:09:13,467 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:09:13,524 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:09:13,524 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:09:13,524 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:09:13,524 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:09:13,524 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:09:13,524 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:09:13,525 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:09:13,525 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:09:13,552 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states. [2020-10-29 09:09:13,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 09:09:13,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:09:13,564 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, 1, 1, 1] [2020-10-29 09:09:13,564 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:09:13,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:09:13,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1055086694, now seen corresponding path program 1 times [2020-10-29 09:09:13,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:09:13,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845525213] [2020-10-29 09:09:13,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:09:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:13,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:13,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:13,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:13,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:14,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:14,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:14,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 09:09:14,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:09:14,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-29 09:09:14,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:14,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:14,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:09:14,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 09:09:14,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:09:14,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:09:14,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:09:14,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:14,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:14,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:14,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:09:14,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:09:14,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 09:09:14,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:14,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:14,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:09:14,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:09:14,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:09:14,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:09:14,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:09:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:14,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:14,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:14,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:14,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:14,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:14,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 09:09:14,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:09:14,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 09:09:14,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:14,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:14,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:09:14,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:09:14,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:09:14,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:09:14,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 09:09:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:14,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:14,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:14,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:14,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:09:14,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:09:14,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:09:14,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:14,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:14,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:09:14,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 09:09:14,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:09:14,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:09:14,369 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 09:09:14,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845525213] [2020-10-29 09:09:14,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:09:14,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:09:14,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954357924] [2020-10-29 09:09:14,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:09:14,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:09:14,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:09:14,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:09:14,399 INFO L87 Difference]: Start difference. First operand 106 states. Second operand 4 states. [2020-10-29 09:09:14,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:09:14,786 INFO L93 Difference]: Finished difference Result 201 states and 319 transitions. [2020-10-29 09:09:14,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:09:14,788 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-29 09:09:14,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:09:14,799 INFO L225 Difference]: With dead ends: 201 [2020-10-29 09:09:14,800 INFO L226 Difference]: Without dead ends: 99 [2020-10-29 09:09:14,805 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 09:09:14,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-29 09:09:14,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-10-29 09:09:14,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-29 09:09:14,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 121 transitions. [2020-10-29 09:09:14,864 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 121 transitions. Word has length 29 [2020-10-29 09:09:14,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:09:14,864 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 121 transitions. [2020-10-29 09:09:14,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:09:14,865 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 121 transitions. [2020-10-29 09:09:14,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 09:09:14,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:09:14,867 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:09:14,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:09:14,867 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:09:14,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:09:14,868 INFO L82 PathProgramCache]: Analyzing trace with hash 489362538, now seen corresponding path program 1 times [2020-10-29 09:09:14,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:09:14,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428172451] [2020-10-29 09:09:14,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:09:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:09:14,943 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:09:14,944 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:09:14,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:09:14,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:09:14 BoogieIcfgContainer [2020-10-29 09:09:14,969 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:09:14,971 INFO L168 Benchmark]: Toolchain (without parser) took 3015.50 ms. Allocated memory is still 160.4 MB. Free memory was 135.0 MB in the beginning and 111.6 MB in the end (delta: 23.3 MB). Peak memory consumption was 24.2 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:14,972 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory was 99.0 MB in the beginning and 98.9 MB in the end (delta: 69.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:09:14,973 INFO L168 Benchmark]: CACSL2BoogieTranslator took 490.11 ms. Allocated memory is still 160.4 MB. Free memory was 134.4 MB in the beginning and 120.8 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:14,974 INFO L168 Benchmark]: Boogie Preprocessor took 74.65 ms. Allocated memory is still 160.4 MB. Free memory was 120.8 MB in the beginning and 118.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:14,975 INFO L168 Benchmark]: RCFGBuilder took 887.52 ms. Allocated memory is still 160.4 MB. Free memory was 118.0 MB in the beginning and 109.9 MB in the end (delta: 8.1 MB). Peak memory consumption was 10.7 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:14,975 INFO L168 Benchmark]: TraceAbstraction took 1543.39 ms. Allocated memory is still 160.4 MB. Free memory was 109.5 MB in the beginning and 111.6 MB in the end (delta: -2.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:09:14,979 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory was 99.0 MB in the beginning and 98.9 MB in the end (delta: 69.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 490.11 ms. Allocated memory is still 160.4 MB. Free memory was 134.4 MB in the beginning and 120.8 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 74.65 ms. Allocated memory is still 160.4 MB. Free memory was 120.8 MB in the beginning and 118.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 887.52 ms. Allocated memory is still 160.4 MB. Free memory was 118.0 MB in the beginning and 109.9 MB in the end (delta: 8.1 MB). Peak memory consumption was 10.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1543.39 ms. Allocated memory is still 160.4 MB. Free memory was 109.5 MB in the beginning and 111.6 MB in the end (delta: -2.2 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 120, overapproximation of bitwiseAnd at line 220. Possible FailurePath: [L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L231] float x = 1.0f / 0.0f; [L232] float y = __VERIFIER_nondet_float(); [L233] CALL, EXPR __ieee754_hypotf(x, y) [L84] float a = x, b = y, t1, t2, y1, y2, w; [L85] __int32_t j, k, ha, hb; [L88] ieee_float_shape_type gf_u; [L89] gf_u.value = (x) [L90] EXPR gf_u.word [L90] (ha) = gf_u.word [L92] ha &= 0x7fffffffL [L94] ieee_float_shape_type gf_u; [L95] gf_u.value = (y) [L96] EXPR gf_u.word [L96] (hb) = gf_u.word [L98] hb &= 0x7fffffffL [L99] COND TRUE hb > ha [L100] a = y [L101] b = x [L102] j = ha [L103] ha = hb [L104] hb = j [L110] ieee_float_shape_type sf_u; [L111] sf_u.word = (ha) [L112] EXPR sf_u.value [L112] (a) = sf_u.value [L115] ieee_float_shape_type sf_u; [L116] sf_u.word = (hb) [L117] EXPR sf_u.value [L117] (b) = sf_u.value [L119] COND TRUE (ha - hb) > 0xf000000L [L120] return a + b; [L233] RET, EXPR __ieee754_hypotf(x, y) [L233] float res = __ieee754_hypotf(x, y); [L235] CALL, EXPR isinf_float(res) [L214] __int32_t ix; [L216] ieee_float_shape_type gf_u; [L217] gf_u.value = (x) [L218] EXPR gf_u.word [L218] (ix) = gf_u.word [L220] ix &= 0x7fffffff [L221] return ((ix) == 0x7f800000L); [L235] RET, EXPR isinf_float(res) [L235] COND TRUE !isinf_float(res) [L236] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1270a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 106 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 121 SDtfs, 10 SDslu, 101 SDs, 0 SdLazy, 129 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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=106occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 2464 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...