/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=NARROWEST --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_1130b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:20:20,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:20:20,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:20:20,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:20:20,257 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:20:20,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:20:20,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:20:20,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:20:20,273 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:20:20,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:20:20,277 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:20:20,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:20:20,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:20:20,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:20:20,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:20:20,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:20:20,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:20:20,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:20:20,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:20:20,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:20:20,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:20:20,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:20:20,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:20:20,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:20:20,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:20:20,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:20:20,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:20:20,319 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:20:20,320 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:20:20,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:20:20,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:20:20,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:20:20,327 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:20:20,328 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:20:20,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:20:20,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:20:20,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:20:20,331 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:20:20,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:20:20,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:20:20,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:20:20,333 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 [2020-10-13 10:20:20,355 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:20:20,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:20:20,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:20:20,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:20:20,357 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:20:20,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:20:20,357 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:20:20,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:20:20,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:20:20,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:20:20,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:20:20,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:20:20,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:20:20,359 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:20:20,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:20:20,359 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:20:20,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:20:20,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:20:20,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:20:20,360 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:20:20,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:20:20,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:20:20,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:20:20,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:20:20,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:20:20,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:20:20,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:20:20,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:20:20,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:20:20,362 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:20:20,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:20:20,721 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:20:20,725 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:20:20,727 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:20:20,727 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:20:20,728 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130b.c [2020-10-13 10:20:20,800 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d5899b6d/6366d23d128e47a29f6de9c4422f5cf8/FLAG12dc49b83 [2020-10-13 10:20:21,260 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:20:21,261 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1130b.c [2020-10-13 10:20:21,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d5899b6d/6366d23d128e47a29f6de9c4422f5cf8/FLAG12dc49b83 [2020-10-13 10:20:21,618 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d5899b6d/6366d23d128e47a29f6de9c4422f5cf8 [2020-10-13 10:20:21,628 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:20:21,630 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:20:21,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:20:21,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:20:21,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:20:21,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:20:21" (1/1) ... [2020-10-13 10:20:21,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e04f8f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:21, skipping insertion in model container [2020-10-13 10:20:21,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:20:21" (1/1) ... [2020-10-13 10:20:21,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:20:21,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:20:21,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:20:21,950 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:20:22,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:20:22,110 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:20:22,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:22 WrapperNode [2020-10-13 10:20:22,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:20:22,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:20:22,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:20:22,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:20:22,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:22" (1/1) ... [2020-10-13 10:20:22,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:22" (1/1) ... [2020-10-13 10:20:22,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:22" (1/1) ... [2020-10-13 10:20:22,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:22" (1/1) ... [2020-10-13 10:20:22,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:22" (1/1) ... [2020-10-13 10:20:22,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:22" (1/1) ... [2020-10-13 10:20:22,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:22" (1/1) ... [2020-10-13 10:20:22,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:20:22,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:20:22,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:20:22,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:20:22,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:22" (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 [2020-10-13 10:20:22,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:20:22,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:20:22,223 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-10-13 10:20:22,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-13 10:20:22,224 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:20:22,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:20:22,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-13 10:20:22,224 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-10-13 10:20:22,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:20:22,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 10:20:22,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:20:22,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:20:22,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 10:20:22,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:20:22,225 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-13 10:20:22,225 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:20:22,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:20:22,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-13 10:20:22,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:20:22,682 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:20:22,682 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-13 10:20:22,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:20:22 BoogieIcfgContainer [2020-10-13 10:20:22,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:20:22,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:20:22,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:20:22,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:20:22,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:20:21" (1/3) ... [2020-10-13 10:20:22,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e480a40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:20:22, skipping insertion in model container [2020-10-13 10:20:22,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:22" (2/3) ... [2020-10-13 10:20:22,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e480a40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:20:22, skipping insertion in model container [2020-10-13 10:20:22,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:20:22" (3/3) ... [2020-10-13 10:20:22,694 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130b.c [2020-10-13 10:20:22,704 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:20:22,711 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:20:22,725 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:20:22,750 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:20:22,750 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:20:22,751 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:20:22,751 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:20:22,751 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:20:22,751 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:20:22,752 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:20:22,752 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:20:22,773 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-10-13 10:20:22,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-13 10:20:22,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:20:22,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:20:22,782 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:20:22,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:20:22,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1920116781, now seen corresponding path program 1 times [2020-10-13 10:20:22,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:20:22,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032223107] [2020-10-13 10:20:22,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:20:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:22,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:22,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:23,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:23,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 10:20:23,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:20:23,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-13 10:20:23,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:23,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:23,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 10:20:23,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:23,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:20:23,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:20:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:23,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:23,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:23,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:23,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:23,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:20:23,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:23,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:23,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:23,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:23,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:23,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 10:20:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:23,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:23,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:23,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:23,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:20:23,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:20:23,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 10:20:23,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:23,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:23,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:20:23,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:23,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:23,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:20:23,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032223107] [2020-10-13 10:20:23,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:20:23,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:20:23,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270831223] [2020-10-13 10:20:23,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:20:23,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:20:23,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:20:23,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:20:23,317 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 4 states. [2020-10-13 10:20:23,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:20:23,593 INFO L93 Difference]: Finished difference Result 116 states and 180 transitions. [2020-10-13 10:20:23,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:20:23,595 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-13 10:20:23,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:20:23,607 INFO L225 Difference]: With dead ends: 116 [2020-10-13 10:20:23,607 INFO L226 Difference]: Without dead ends: 56 [2020-10-13 10:20:23,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:20:23,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-13 10:20:23,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-13 10:20:23,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-13 10:20:23,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2020-10-13 10:20:23,678 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 19 [2020-10-13 10:20:23,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:20:23,679 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2020-10-13 10:20:23,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:20:23,680 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2020-10-13 10:20:23,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 10:20:23,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:20:23,684 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] [2020-10-13 10:20:23,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:20:23,684 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:20:23,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:20:23,685 INFO L82 PathProgramCache]: Analyzing trace with hash -2095475350, now seen corresponding path program 1 times [2020-10-13 10:20:23,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:20:23,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645587363] [2020-10-13 10:20:23,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:20:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:20:23,761 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:20:23,761 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:20:23,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:20:23,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:20:23 BoogieIcfgContainer [2020-10-13 10:20:23,786 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:20:23,789 INFO L168 Benchmark]: Toolchain (without parser) took 2158.33 ms. Allocated memory was 146.8 MB in the beginning and 235.9 MB in the end (delta: 89.1 MB). Free memory was 103.1 MB in the beginning and 195.1 MB in the end (delta: -92.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 10:20:23,790 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 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-13 10:20:23,791 INFO L168 Benchmark]: CACSL2BoogieTranslator took 475.35 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 102.9 MB in the beginning and 180.1 MB in the end (delta: -77.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-10-13 10:20:23,792 INFO L168 Benchmark]: Boogie Preprocessor took 54.14 ms. Allocated memory is still 203.4 MB. Free memory was 180.1 MB in the beginning and 177.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-13 10:20:23,793 INFO L168 Benchmark]: RCFGBuilder took 520.91 ms. Allocated memory is still 203.4 MB. Free memory was 177.4 MB in the beginning and 149.2 MB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2020-10-13 10:20:23,794 INFO L168 Benchmark]: TraceAbstraction took 1098.73 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 148.6 MB in the beginning and 195.1 MB in the end (delta: -46.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 10:20:23,798 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 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 475.35 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 102.9 MB in the beginning and 180.1 MB in the end (delta: -77.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.14 ms. Allocated memory is still 203.4 MB. Free memory was 180.1 MB in the beginning and 177.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 520.91 ms. Allocated memory is still 203.4 MB. Free memory was 177.4 MB in the beginning and 149.2 MB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1098.73 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 148.6 MB in the beginning and 195.1 MB in the end (delta: -46.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of someUnaryFLOAToperation at line 126, 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, }; [L126] float x = -0.0f; [L127] float y = __VERIFIER_nondet_float(); [L129] COND TRUE (y < 0.0f || y > 0.0f) [L131] 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); [L131] RET, EXPR fmod_float(x, y) [L131] float res = fmod_float(x, y); [L134] EXPR res == -0.0f && __signbit_float(res) == 1 [L134] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L135] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 61 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: 75 SDtfs, 14 SDslu, 61 SDs, 0 SdLazy, 80 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred 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, 0.3s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 918 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...