/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/double_req_bl_1031.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:18:45,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:18:45,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:18:45,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:18:45,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:18:45,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:18:45,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:18:45,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:18:45,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:18:45,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:18:45,087 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:18:45,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:18:45,088 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:18:45,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:18:45,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:18:45,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:18:45,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:18:45,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:18:45,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:18:45,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:18:45,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:18:45,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:18:45,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:18:45,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:18:45,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:18:45,117 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:18:45,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:18:45,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:18:45,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:18:45,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:18:45,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:18:45,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:18:45,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:18:45,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:18:45,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:18:45,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:18:45,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:18:45,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:18:45,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:18:45,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:18:45,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:18:45,135 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 10:18:45,179 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:18:45,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:18:45,184 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:18:45,184 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:18:45,184 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:18:45,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:18:45,185 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:18:45,185 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:18:45,185 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:18:45,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:18:45,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:18:45,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:18:45,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:18:45,187 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:18:45,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:18:45,187 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:18:45,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:18:45,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:18:45,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:18:45,188 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:18:45,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:18:45,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:18:45,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:18:45,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:18:45,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:18:45,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:18:45,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:18:45,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:18:45,190 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:18:45,190 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 10:18:45,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:18:45,524 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:18:45,529 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:18:45,531 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:18:45,531 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:18:45,532 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1031.c [2020-10-13 10:18:45,588 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9bd14430f/db76bf69010d41719be3d11bdb1a01fa/FLAG641502fc4 [2020-10-13 10:18:46,028 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:18:46,029 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1031.c [2020-10-13 10:18:46,036 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9bd14430f/db76bf69010d41719be3d11bdb1a01fa/FLAG641502fc4 [2020-10-13 10:18:46,429 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9bd14430f/db76bf69010d41719be3d11bdb1a01fa [2020-10-13 10:18:46,437 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:18:46,439 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:18:46,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:18:46,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:18:46,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:18:46,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:18:46" (1/1) ... [2020-10-13 10:18:46,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c1aa6c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:46, skipping insertion in model container [2020-10-13 10:18:46,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:18:46" (1/1) ... [2020-10-13 10:18:46,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:18:46,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:18:46,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:18:46,670 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:18:46,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:18:46,726 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:18:46,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:46 WrapperNode [2020-10-13 10:18:46,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:18:46,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:18:46,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:18:46,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:18:46,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:46" (1/1) ... [2020-10-13 10:18:46,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:46" (1/1) ... [2020-10-13 10:18:46,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:46" (1/1) ... [2020-10-13 10:18:46,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:46" (1/1) ... [2020-10-13 10:18:46,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:46" (1/1) ... [2020-10-13 10:18:46,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:46" (1/1) ... [2020-10-13 10:18:46,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:46" (1/1) ... [2020-10-13 10:18:46,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:18:46,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:18:46,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:18:46,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:18:46,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:18:46,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:18:46,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:18:46,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-13 10:18:46,918 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2020-10-13 10:18:46,918 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:18:46,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:18:46,918 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-13 10:18:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2020-10-13 10:18:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:18:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 10:18:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:18:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:18:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:18:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 10:18:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:18:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:18:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:18:47,301 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:18:47,301 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-13 10:18:47,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:18:47 BoogieIcfgContainer [2020-10-13 10:18:47,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:18:47,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:18:47,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:18:47,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:18:47,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:18:46" (1/3) ... [2020-10-13 10:18:47,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1a43e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:18:47, skipping insertion in model container [2020-10-13 10:18:47,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:46" (2/3) ... [2020-10-13 10:18:47,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1a43e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:18:47, skipping insertion in model container [2020-10-13 10:18:47,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:18:47" (3/3) ... [2020-10-13 10:18:47,314 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2020-10-13 10:18:47,325 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:18:47,332 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:18:47,346 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:18:47,371 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:18:47,371 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:18:47,372 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:18:47,372 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:18:47,372 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:18:47,372 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:18:47,372 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:18:47,372 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:18:47,392 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-10-13 10:18:47,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-13 10:18:47,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:18:47,402 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] [2020-10-13 10:18:47,403 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:18:47,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:18:47,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1071653874, now seen corresponding path program 1 times [2020-10-13 10:18:47,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:18:47,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919757018] [2020-10-13 10:18:47,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:18:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:47,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:47,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:47,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 10:18:47,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:47,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 10:18:47,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:47,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:47,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 10:18:47,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:47,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:18:47,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:18:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:47,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:47,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:47,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:18:47,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:47,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 10:18:47,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:47,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:47,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:18:47,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:47,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:18:47,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:18:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:47,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:47,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:47,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 10:18:47,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:47,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 10:18:47,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:47,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:47,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:18:47,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:47,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:18:47,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 10:18:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:47,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:47,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:47,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:18:47,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:47,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:18:47,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:47,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:47,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:18:47,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:47,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:18:47,814 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 10:18:47,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919757018] [2020-10-13 10:18:47,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:18:47,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:18:47,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946257460] [2020-10-13 10:18:47,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:18:47,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:18:47,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:18:47,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:18:47,846 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2020-10-13 10:18:48,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:18:48,030 INFO L93 Difference]: Finished difference Result 70 states and 94 transitions. [2020-10-13 10:18:48,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:18:48,032 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-13 10:18:48,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:18:48,043 INFO L225 Difference]: With dead ends: 70 [2020-10-13 10:18:48,044 INFO L226 Difference]: Without dead ends: 35 [2020-10-13 10:18:48,047 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 [2020-10-13 10:18:48,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-13 10:18:48,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-13 10:18:48,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 10:18:48,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2020-10-13 10:18:48,092 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 23 [2020-10-13 10:18:48,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:18:48,093 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2020-10-13 10:18:48,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:18:48,093 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2020-10-13 10:18:48,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 10:18:48,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:18:48,095 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] [2020-10-13 10:18:48,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:18:48,095 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:18:48,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:18:48,096 INFO L82 PathProgramCache]: Analyzing trace with hash -308920579, now seen corresponding path program 1 times [2020-10-13 10:18:48,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:18:48,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308282936] [2020-10-13 10:18:48,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:18:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:18:48,134 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:18:48,135 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:18:48,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:18:48,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:18:48 BoogieIcfgContainer [2020-10-13 10:18:48,161 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:18:48,164 INFO L168 Benchmark]: Toolchain (without parser) took 1724.58 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 100.8 MB in the beginning and 103.0 MB in the end (delta: -2.2 MB). Peak memory consumption was 59.1 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:48,165 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-13 10:18:48,166 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.50 ms. Allocated memory is still 138.9 MB. Free memory was 100.6 MB in the beginning and 88.9 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:48,167 INFO L168 Benchmark]: Boogie Preprocessor took 121.28 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 88.9 MB in the beginning and 177.4 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:48,168 INFO L168 Benchmark]: RCFGBuilder took 456.89 ms. Allocated memory is still 200.3 MB. Free memory was 177.4 MB in the beginning and 157.2 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:48,169 INFO L168 Benchmark]: TraceAbstraction took 854.32 ms. Allocated memory is still 200.3 MB. Free memory was 156.5 MB in the beginning and 103.0 MB in the end (delta: 53.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:48,174 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 287.50 ms. Allocated memory is still 138.9 MB. Free memory was 100.6 MB in the beginning and 88.9 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.28 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 88.9 MB in the beginning and 177.4 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 456.89 ms. Allocated memory is still 200.3 MB. Free memory was 177.4 MB in the beginning and 157.2 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 854.32 ms. Allocated memory is still 200.3 MB. Free memory was 156.5 MB in the beginning and 103.0 MB in the end (delta: 53.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 34, overapproximation of someBinaryArithmeticDOUBLEoperation at line 74, overapproximation of bitwiseAnd at line 35, overapproximation of someBinaryDOUBLEComparisonOperation at line 15. Possible FailurePath: [L74] double x = 0.0 / 0.0; [L75] CALL, EXPR round_double(x) [L18] __int32_t msw, exponent_less_1023; [L19] __uint32_t lsw; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L26] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L27] COND TRUE exponent_less_1023 < 20 [L28] COND FALSE !(exponent_less_1023 < 0) [L34] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; [L35] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L36] return x; [L75] RET, EXPR round_double(x) [L75] double res = round_double(x); [L78] CALL, EXPR isnan_double(res) [L15] return x != x; [L78] RET, EXPR isnan_double(res) [L78] COND TRUE !isnan_double(res) [L79] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 37 SDslu, 5 SDs, 0 SdLazy, 43 SolverSat, 9 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=39occurred 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, 0.2s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 946 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...