/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_0250a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:27:22,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:27:22,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:27:23,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:27:23,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:27:23,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:27:23,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:27:23,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:27:23,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:27:23,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:27:23,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:27:23,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:27:23,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:27:23,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:27:23,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:27:23,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:27:23,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:27:23,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:27:23,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:27:23,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:27:23,114 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:27:23,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:27:23,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:27:23,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:27:23,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:27:23,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:27:23,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:27:23,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:27:23,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:27:23,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:27:23,126 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:27:23,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:27:23,128 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:27:23,129 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:27:23,131 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:27:23,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:27:23,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:27:23,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:27:23,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:27:23,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:27:23,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:27:23,136 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 [2020-10-28 14:27:23,163 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:27:23,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:27:23,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:27:23,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:27:23,165 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:27:23,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:27:23,166 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:27:23,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:27:23,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:27:23,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:27:23,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:27:23,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:27:23,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:27:23,167 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:27:23,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:27:23,168 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:27:23,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:27:23,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:27:23,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:27:23,168 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:27:23,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:27:23,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:27:23,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:27:23,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:27:23,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:27:23,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:27:23,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:27:23,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:27:23,170 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:27:23,170 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:27:23,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:27:23,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:27:23,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:27:23,588 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:27:23,589 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:27:23,590 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0250a.c [2020-10-28 14:27:23,692 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a2df0c7b/5d15c3eef1e94c3b8fd41ed6fe276dbf/FLAG5dfe5691f [2020-10-28 14:27:24,293 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:27:24,294 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0250a.c [2020-10-28 14:27:24,313 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a2df0c7b/5d15c3eef1e94c3b8fd41ed6fe276dbf/FLAG5dfe5691f [2020-10-28 14:27:24,646 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a2df0c7b/5d15c3eef1e94c3b8fd41ed6fe276dbf [2020-10-28 14:27:24,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:27:24,657 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:27:24,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:27:24,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:27:24,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:27:24,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:27:24" (1/1) ... [2020-10-28 14:27:24,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4be1764f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:24, skipping insertion in model container [2020-10-28 14:27:24,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:27:24" (1/1) ... [2020-10-28 14:27:24,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:27:24,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:27:24,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:27:25,020 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:27:25,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:27:25,191 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:27:25,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:25 WrapperNode [2020-10-28 14:27:25,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:27:25,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:27:25,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:27:25,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:27:25,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:25" (1/1) ... [2020-10-28 14:27:25,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:25" (1/1) ... [2020-10-28 14:27:25,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:25" (1/1) ... [2020-10-28 14:27:25,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:25" (1/1) ... [2020-10-28 14:27:25,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:25" (1/1) ... [2020-10-28 14:27:25,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:25" (1/1) ... [2020-10-28 14:27:25,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:25" (1/1) ... [2020-10-28 14:27:25,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:27:25,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:27:25,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:27:25,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:27:25,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:25" (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 [2020-10-28 14:27:25,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:27:25,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:27:25,408 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:27:25,408 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2020-10-28 14:27:25,408 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-28 14:27:25,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-10-28 14:27:25,408 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-28 14:27:25,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_asinf [2020-10-28 14:27:25,409 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:27:25,409 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:27:25,409 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:27:25,409 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:27:25,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:27:25,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-28 14:27:25,410 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2020-10-28 14:27:25,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:27:25,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:27:25,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:27:25,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:27:25,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:27:25,411 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-28 14:27:25,411 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-10-28 14:27:25,411 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-28 14:27:25,412 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_asinf [2020-10-28 14:27:25,412 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:27:25,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:27:25,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:27:25,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:27:26,233 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:27:26,233 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-28 14:27:26,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:27:26 BoogieIcfgContainer [2020-10-28 14:27:26,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:27:26,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:27:26,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:27:26,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:27:26,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:27:24" (1/3) ... [2020-10-28 14:27:26,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b11ee2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:27:26, skipping insertion in model container [2020-10-28 14:27:26,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:25" (2/3) ... [2020-10-28 14:27:26,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b11ee2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:27:26, skipping insertion in model container [2020-10-28 14:27:26,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:27:26" (3/3) ... [2020-10-28 14:27:26,247 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0250a.c [2020-10-28 14:27:26,261 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:27:26,267 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:27:26,284 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:27:26,315 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:27:26,315 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:27:26,315 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:27:26,315 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:27:26,316 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:27:26,316 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:27:26,316 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:27:26,316 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:27:26,336 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-10-28 14:27:26,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 14:27:26,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:27:26,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:27:26,344 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:27:26,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:27:26,351 INFO L82 PathProgramCache]: Analyzing trace with hash -284303133, now seen corresponding path program 1 times [2020-10-28 14:27:26,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:27:26,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568801423] [2020-10-28 14:27:26,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:27:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:26,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:26,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:26,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 14:27:26,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:26,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-28 14:27:26,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:26,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:26,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:26,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 14:27:26,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:26,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:27:27,069 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-28 14:27:27,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:27:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:27,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:27,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:27,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:27:27,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:27,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 14:27:27,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:27,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:27,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:27,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:27:27,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:27,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:27:27,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:27:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:27,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:27,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:27,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:27:27,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:27,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:27:27,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:27,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:27,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:27,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:27:27,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:27,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:27:27,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 14:27:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:27,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:27,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:27,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:27:27,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:27,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:27:27,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:27,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:27,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:27,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:27:27,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:27,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:27:27,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:27:27,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568801423] [2020-10-28 14:27:27,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:27:27,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:27:27,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820585256] [2020-10-28 14:27:27,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:27:27,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:27:27,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:27:27,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:27:27,278 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 4 states. [2020-10-28 14:27:27,561 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 14:27:27,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:27:27,958 INFO L93 Difference]: Finished difference Result 149 states and 220 transitions. [2020-10-28 14:27:27,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:27:27,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-28 14:27:27,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:27:27,972 INFO L225 Difference]: With dead ends: 149 [2020-10-28 14:27:27,973 INFO L226 Difference]: Without dead ends: 73 [2020-10-28 14:27:27,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:27:27,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-28 14:27:28,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-10-28 14:27:28,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-28 14:27:28,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 90 transitions. [2020-10-28 14:27:28,034 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 90 transitions. Word has length 22 [2020-10-28 14:27:28,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:27:28,034 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 90 transitions. [2020-10-28 14:27:28,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:27:28,035 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 90 transitions. [2020-10-28 14:27:28,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 14:27:28,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:27:28,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:27:28,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:27:28,037 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:27:28,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:27:28,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1150570991, now seen corresponding path program 1 times [2020-10-28 14:27:28,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:27:28,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024738303] [2020-10-28 14:27:28,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:27:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:27:28,090 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:27:28,091 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:27:28,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:27:28,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:27:28 BoogieIcfgContainer [2020-10-28 14:27:28,120 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:27:28,124 INFO L168 Benchmark]: Toolchain (without parser) took 3469.01 ms. Allocated memory was 151.0 MB in the beginning and 190.8 MB in the end (delta: 39.8 MB). Free memory was 125.3 MB in the beginning and 121.8 MB in the end (delta: 3.5 MB). Peak memory consumption was 43.7 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:28,125 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:27:28,129 INFO L168 Benchmark]: CACSL2BoogieTranslator took 533.45 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 110.4 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:28,129 INFO L168 Benchmark]: Boogie Preprocessor took 121.87 ms. Allocated memory is still 151.0 MB. Free memory was 110.4 MB in the beginning and 107.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:28,132 INFO L168 Benchmark]: RCFGBuilder took 918.37 ms. Allocated memory is still 151.0 MB. Free memory was 107.7 MB in the beginning and 108.1 MB in the end (delta: -393.3 kB). Peak memory consumption was 16.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:28,134 INFO L168 Benchmark]: TraceAbstraction took 1882.50 ms. Allocated memory was 151.0 MB in the beginning and 190.8 MB in the end (delta: 39.8 MB). Free memory was 107.5 MB in the beginning and 121.8 MB in the end (delta: -14.3 MB). Peak memory consumption was 25.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:28,140 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 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 533.45 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 110.4 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 121.87 ms. Allocated memory is still 151.0 MB. Free memory was 110.4 MB in the beginning and 107.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 918.37 ms. Allocated memory is still 151.0 MB. Free memory was 107.7 MB in the beginning and 108.1 MB in the end (delta: -393.3 kB). Peak memory consumption was 16.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1882.50 ms. Allocated memory was 151.0 MB in the beginning and 190.8 MB in the end (delta: 39.8 MB). Free memory was 107.5 MB in the beginning and 121.8 MB in the end (delta: -14.3 MB). Peak memory consumption was 25.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 60, overapproximation of someUnaryDOUBLEoperation at line 149, overapproximation of bitwiseAnd at line 163, overapproximation of someUnaryFLOAToperation at line 147, overapproximation of someBinaryArithmeticFLOAToperation at line 166. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L62] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L145-L153] static const float one_asin = 1.0000000000e+00, huge_asin = 1.000e+30, pio2_hi_asin = 1.57079637050628662109375f, pio2_lo_asin = -4.37113900018624283e-8f, pio4_hi_asin = 0.785398185253143310546875f, pS0_asin = 1.6666667163e-01, pS1_asin = -3.2556581497e-01, pS2_asin = 2.0121252537e-01, pS3_asin = -4.0055535734e-02, pS4_asin = 7.9153501429e-04, pS5_asin = 3.4793309169e-05, qS1_asin = -2.4033949375e+00, qS2_asin = 2.0209457874e+00, qS3_asin = -6.8828397989e-01, qS4_asin = 7.7038154006e-02; [L230] float x = 1.0f / 0.0f; [L231] CALL, EXPR __ieee754_asinf(x) [L156] float t, w, p, q, c, r, s; [L157] __int32_t hx, ix; [L159] ieee_float_shape_type gf_u; [L160] gf_u.value = (x) [L161] EXPR gf_u.word [L161] (hx) = gf_u.word [L163] ix = hx & 0x7fffffff [L164] COND TRUE ix == 0x3f800000 [L166] return x * pio2_hi_asin + x * pio2_lo_asin; [L231] RET, EXPR __ieee754_asinf(x) [L231] float res = __ieee754_asinf(x); [L234] CALL, EXPR isnan_float(res) [L60] return x != x; [L234] RET, EXPR isnan_float(res) [L234] COND TRUE !isnan_float(res) [L235] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0250a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 99 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 90 SDtfs, 14 SDslu, 75 SDs, 0 SdLazy, 89 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, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred 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, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 2457 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...