/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=0.4 --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 -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1121b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:48:36,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:48:36,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:48:36,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:48:36,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:48:36,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:48:36,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:48:36,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:48:36,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:48:36,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:48:36,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:48:36,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:48:36,260 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:48:36,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:48:36,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:48:36,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:48:36,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:48:36,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:48:36,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:48:36,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:48:36,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:48:36,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:48:36,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:48:36,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:48:36,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:48:36,277 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:48:36,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:48:36,278 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:48:36,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:48:36,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:48:36,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:48:36,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:48:36,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:48:36,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:48:36,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:48:36,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:48:36,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:48:36,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:48:36,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:48:36,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:48:36,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:48:36,287 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 [2020-10-14 04:48:36,310 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:48:36,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:48:36,312 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:48:36,312 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:48:36,312 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:48:36,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:48:36,313 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:48:36,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:48:36,316 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:48:36,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:48:36,316 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:48:36,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:48:36,317 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:48:36,317 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:48:36,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:48:36,317 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:48:36,318 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:48:36,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:48:36,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:48:36,318 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:48:36,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:48:36,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:48:36,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:48:36,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:48:36,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:48:36,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:48:36,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:48:36,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:48:36,322 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:48:36,322 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:48:36,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:48:36,671 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:48:36,675 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:48:36,676 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:48:36,677 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:48:36,678 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1121b.c [2020-10-14 04:48:36,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aac487421/6075d1abc06a4157ad37881578b982c7/FLAG457e6302c [2020-10-14 04:48:37,210 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:48:37,211 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1121b.c [2020-10-14 04:48:37,218 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aac487421/6075d1abc06a4157ad37881578b982c7/FLAG457e6302c [2020-10-14 04:48:37,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aac487421/6075d1abc06a4157ad37881578b982c7 [2020-10-14 04:48:37,606 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:48:37,607 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:48:37,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:48:37,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:48:37,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:48:37,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:48:37" (1/1) ... [2020-10-14 04:48:37,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243026c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:37, skipping insertion in model container [2020-10-14 04:48:37,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:48:37" (1/1) ... [2020-10-14 04:48:37,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:48:37,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:48:37,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:48:37,874 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:48:38,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:48:38,129 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:48:38,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38 WrapperNode [2020-10-14 04:48:38,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:48:38,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:48:38,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:48:38,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:48:38,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38" (1/1) ... [2020-10-14 04:48:38,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38" (1/1) ... [2020-10-14 04:48:38,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38" (1/1) ... [2020-10-14 04:48:38,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38" (1/1) ... [2020-10-14 04:48:38,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38" (1/1) ... [2020-10-14 04:48:38,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38" (1/1) ... [2020-10-14 04:48:38,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38" (1/1) ... [2020-10-14 04:48:38,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:48:38,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:48:38,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:48:38,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:48:38,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38" (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 [2020-10-14 04:48:38,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:48:38,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:48:38,246 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-10-14 04:48:38,246 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-14 04:48:38,246 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:48:38,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:48:38,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-14 04:48:38,246 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-10-14 04:48:38,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 04:48:38,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 04:48:38,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:48:38,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:48:38,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 04:48:38,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:48:38,247 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-14 04:48:38,248 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:48:38,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:48:38,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-14 04:48:38,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:48:38,672 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:48:38,672 INFO L295 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-14 04:48:38,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:48:38 BoogieIcfgContainer [2020-10-14 04:48:38,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:48:38,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:48:38,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:48:38,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:48:38,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:48:37" (1/3) ... [2020-10-14 04:48:38,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c7af98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:48:38, skipping insertion in model container [2020-10-14 04:48:38,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:38" (2/3) ... [2020-10-14 04:48:38,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c7af98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:48:38, skipping insertion in model container [2020-10-14 04:48:38,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:48:38" (3/3) ... [2020-10-14 04:48:38,685 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1121b.c [2020-10-14 04:48:38,696 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:48:38,708 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:48:38,725 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:48:38,749 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:48:38,749 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:48:38,749 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:48:38,749 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:48:38,750 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:48:38,750 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:48:38,750 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:48:38,750 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:48:38,772 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-10-14 04:48:38,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 04:48:38,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:48:38,781 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] [2020-10-14 04:48:38,782 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:48:38,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:48:38,789 INFO L82 PathProgramCache]: Analyzing trace with hash 527256461, now seen corresponding path program 1 times [2020-10-14 04:48:38,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:48:38,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717103087] [2020-10-14 04:48:38,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:48:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:38,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:39,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:39,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:39,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 04:48:39,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:48:39,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-14 04:48:39,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:39,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:39,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:39,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 04:48:39,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:39,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:48:39,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:48:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:39,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:39,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:39,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:48:39,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:39,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 04:48:39,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:39,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:39,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:39,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:48:39,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:39,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:39,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:48:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:39,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:39,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:39,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:39,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:48:39,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:48:39,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 04:48:39,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:39,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:39,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:39,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-14 04:48:39,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:39,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:39,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:48:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:39,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:39,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:39,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:48:39,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:39,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:48:39,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:39,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:39,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:39,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:48:39,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:39,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:39,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:48:39,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717103087] [2020-10-14 04:48:39,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:48:39,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:48:39,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770618625] [2020-10-14 04:48:39,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:48:39,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:48:39,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:48:39,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:48:39,391 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 4 states. [2020-10-14 04:48:39,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:48:39,700 INFO L93 Difference]: Finished difference Result 102 states and 158 transitions. [2020-10-14 04:48:39,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 04:48:39,703 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-14 04:48:39,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:48:39,717 INFO L225 Difference]: With dead ends: 102 [2020-10-14 04:48:39,718 INFO L226 Difference]: Without dead ends: 51 [2020-10-14 04:48:39,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:48:39,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-14 04:48:39,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-14 04:48:39,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 04:48:39,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2020-10-14 04:48:39,766 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 22 [2020-10-14 04:48:39,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:48:39,766 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2020-10-14 04:48:39,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:48:39,767 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2020-10-14 04:48:39,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 04:48:39,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:48:39,768 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] [2020-10-14 04:48:39,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:48:39,769 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:48:39,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:48:39,769 INFO L82 PathProgramCache]: Analyzing trace with hash 847326186, now seen corresponding path program 1 times [2020-10-14 04:48:39,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:48:39,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906274157] [2020-10-14 04:48:39,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:48:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 04:48:39,821 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 04:48:39,821 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 04:48:39,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:48:39,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:48:39 BoogieIcfgContainer [2020-10-14 04:48:39,864 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 04:48:39,867 INFO L168 Benchmark]: Toolchain (without parser) took 2258.59 ms. Allocated memory was 146.8 MB in the beginning and 232.3 MB in the end (delta: 85.5 MB). Free memory was 102.4 MB in the beginning and 191.9 MB in the end (delta: -89.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-14 04:48:39,870 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 04:48:39,871 INFO L168 Benchmark]: CACSL2BoogieTranslator took 522.58 ms. Allocated memory was 146.8 MB in the beginning and 207.6 MB in the end (delta: 60.8 MB). Free memory was 102.0 MB in the beginning and 183.7 MB in the end (delta: -81.7 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:39,872 INFO L168 Benchmark]: Boogie Preprocessor took 51.33 ms. Allocated memory is still 207.6 MB. Free memory was 183.7 MB in the beginning and 181.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:39,873 INFO L168 Benchmark]: RCFGBuilder took 494.08 ms. Allocated memory is still 207.6 MB. Free memory was 180.8 MB in the beginning and 155.3 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:39,874 INFO L168 Benchmark]: TraceAbstraction took 1185.69 ms. Allocated memory was 207.6 MB in the beginning and 232.3 MB in the end (delta: 24.6 MB). Free memory was 154.3 MB in the beginning and 191.9 MB in the end (delta: -37.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-14 04:48:39,886 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 522.58 ms. Allocated memory was 146.8 MB in the beginning and 207.6 MB in the end (delta: 60.8 MB). Free memory was 102.0 MB in the beginning and 183.7 MB in the end (delta: -81.7 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.33 ms. Allocated memory is still 207.6 MB. Free memory was 183.7 MB in the beginning and 181.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 494.08 ms. Allocated memory is still 207.6 MB. Free memory was 180.8 MB in the beginning and 155.3 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1185.69 ms. Allocated memory was 207.6 MB in the beginning and 232.3 MB in the end (delta: 24.6 MB). Free memory was 154.3 MB in the beginning and 191.9 MB in the end (delta: -37.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 122]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 108, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of someUnaryFLOAToperation at line 117, overapproximation of bitwiseXor at line 31, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L116] float x = __VERIFIER_nondet_float(); [L117] float y = -0.0f; [L118] CALL, EXPR fmod_float(x, y) [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); [L118] RET, EXPR fmod_float(x, y) [L118] float res = fmod_float(x, y); [L121] CALL, EXPR isnan_float(res) [L108] return x != x; [L121] RET, EXPR isnan_float(res) [L121] COND TRUE !isnan_float(res) [L122] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 68 SDtfs, 8 SDslu, 55 SDs, 0 SdLazy, 71 SolverSat, 6 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 1134 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...