/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 --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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:19:05,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:19:05,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:19:05,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:19:05,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:19:05,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:19:05,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:19:05,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:19:05,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:19:05,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:19:05,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:19:05,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:19:05,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:19:05,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:19:05,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:19:05,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:19:05,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:19:05,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:19:05,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:19:05,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:19:05,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:19:05,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:19:05,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:19:05,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:19:05,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:19:05,326 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:19:05,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:19:05,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:19:05,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:19:05,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:19:05,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:19:05,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:19:05,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:19:05,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:19:05,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:19:05,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:19:05,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:19:05,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:19:05,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:19:05,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:19:05,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:19:05,342 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 [2020-09-21 11:19:05,392 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:19:05,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:19:05,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:19:05,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:19:05,396 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:19:05,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:19:05,397 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:19:05,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:19:05,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:19:05,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:19:05,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:19:05,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:19:05,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:19:05,399 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:19:05,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:19:05,400 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:19:05,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:19:05,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:19:05,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:19:05,401 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:19:05,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:19:05,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:19:05,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:19:05,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:19:05,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:19:05,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:19:05,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:19:05,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:19:05,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:19:05,403 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.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;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:19:05,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:19:05,938 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:19:05,945 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:19:05,948 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:19:05,948 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:19:05,950 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-09-21 11:19:06,051 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8aff5e4f/c429be52562244b5bcbd6d5d2cf44672/FLAG728ac64ff [2020-09-21 11:19:06,609 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:19:06,610 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-09-21 11:19:06,626 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8aff5e4f/c429be52562244b5bcbd6d5d2cf44672/FLAG728ac64ff [2020-09-21 11:19:06,947 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8aff5e4f/c429be52562244b5bcbd6d5d2cf44672 [2020-09-21 11:19:06,965 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:19:06,971 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:19:06,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:19:06,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:19:06,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:19:06,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:19:06" (1/1) ... [2020-09-21 11:19:06,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@257a0311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:06, skipping insertion in model container [2020-09-21 11:19:06,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:19:06" (1/1) ... [2020-09-21 11:19:06,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:19:07,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:19:07,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:19:07,350 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:19:07,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:19:07,509 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:19:07,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:07 WrapperNode [2020-09-21 11:19:07,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:19:07,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:19:07,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:19:07,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:19:07,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:07" (1/1) ... [2020-09-21 11:19:07,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:07" (1/1) ... [2020-09-21 11:19:07,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:07" (1/1) ... [2020-09-21 11:19:07,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:07" (1/1) ... [2020-09-21 11:19:07,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:07" (1/1) ... [2020-09-21 11:19:07,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:07" (1/1) ... [2020-09-21 11:19:07,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:07" (1/1) ... [2020-09-21 11:19:07,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:19:07,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:19:07,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:19:07,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:19:07,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:07" (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 [2020-09-21 11:19:07,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:19:07,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:19:07,658 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-09-21 11:19:07,658 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-09-21 11:19:07,658 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:19:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:19:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-21 11:19:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-09-21 11:19:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:19:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 11:19:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:19:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:19:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 11:19:07,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:19:07,661 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-09-21 11:19:07,662 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:19:07,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:19:07,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-21 11:19:07,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:19:08,143 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:19:08,144 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-09-21 11:19:08,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:19:08 BoogieIcfgContainer [2020-09-21 11:19:08,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:19:08,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:19:08,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:19:08,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:19:08,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:19:06" (1/3) ... [2020-09-21 11:19:08,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59505ee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:19:08, skipping insertion in model container [2020-09-21 11:19:08,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:07" (2/3) ... [2020-09-21 11:19:08,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59505ee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:19:08, skipping insertion in model container [2020-09-21 11:19:08,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:19:08" (3/3) ... [2020-09-21 11:19:08,159 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-09-21 11:19:08,171 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:19:08,183 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:19:08,203 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:19:08,230 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:19:08,230 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:19:08,230 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:19:08,231 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:19:08,231 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:19:08,231 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:19:08,231 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:19:08,231 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:19:08,256 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-09-21 11:19:08,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 11:19:08,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:08,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:08,267 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:08,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:08,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1081724134, now seen corresponding path program 1 times [2020-09-21 11:19:08,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:08,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958255432] [2020-09-21 11:19:08,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:08,451 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:08,452 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:08,452 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:08,452 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:08,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-21 11:19:08,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:08,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:19:08,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:08,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:08,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:19:08,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:08,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:08,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:08,554 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:08,554 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:08,555 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:08,555 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:08,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:19:08,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:08,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:19:08,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:08,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:08,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:08,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:08,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:08,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:19:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:08,616 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:08,616 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:08,617 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:08,617 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:08,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:08,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:08,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:19:08,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:08,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:08,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:19:08,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:08,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:08,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 11:19:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:08,630 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:08,630 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:08,630 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:08,631 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:08,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:19:08,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:08,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:19:08,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:08,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:08,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:19:08,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:08,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:08,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:19:08,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958255432] [2020-09-21 11:19:08,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:19:08,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:19:08,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477140585] [2020-09-21 11:19:08,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:19:08,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:08,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:19:08,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:19:08,674 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states. [2020-09-21 11:19:08,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:08,965 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2020-09-21 11:19:08,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:19:08,967 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-09-21 11:19:08,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:08,981 INFO L225 Difference]: With dead ends: 112 [2020-09-21 11:19:08,982 INFO L226 Difference]: Without dead ends: 55 [2020-09-21 11:19:08,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:19:09,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-21 11:19:09,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-21 11:19:09,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-21 11:19:09,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-09-21 11:19:09,049 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2020-09-21 11:19:09,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:09,050 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-09-21 11:19:09,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:19:09,050 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-09-21 11:19:09,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 11:19:09,052 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:09,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:09,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:19:09,053 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:09,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:09,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1695884658, now seen corresponding path program 1 times [2020-09-21 11:19:09,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:09,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297491394] [2020-09-21 11:19:09,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:19:09,252 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:19:09,252 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:19:09,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:19:09,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:19:09 BoogieIcfgContainer [2020-09-21 11:19:09,310 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:19:09,317 INFO L168 Benchmark]: Toolchain (without parser) took 2346.09 ms. Allocated memory was 140.0 MB in the beginning and 236.5 MB in the end (delta: 96.5 MB). Free memory was 102.9 MB in the beginning and 200.8 MB in the end (delta: -97.9 MB). Peak memory consumption was 84.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:09,319 INFO L168 Benchmark]: CDTParser took 0.99 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:19:09,321 INFO L168 Benchmark]: CACSL2BoogieTranslator took 538.46 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.2 MB in the beginning and 178.5 MB in the end (delta: -76.3 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:09,322 INFO L168 Benchmark]: Boogie Preprocessor took 62.57 ms. Allocated memory is still 202.4 MB. Free memory was 178.5 MB in the beginning and 176.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:09,322 INFO L168 Benchmark]: RCFGBuilder took 575.51 ms. Allocated memory is still 202.4 MB. Free memory was 176.5 MB in the beginning and 147.9 MB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:09,325 INFO L168 Benchmark]: TraceAbstraction took 1159.65 ms. Allocated memory was 202.4 MB in the beginning and 236.5 MB in the end (delta: 34.1 MB). Free memory was 147.3 MB in the beginning and 200.8 MB in the end (delta: -53.5 MB). Peak memory consumption was 66.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:09,331 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.99 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 538.46 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.2 MB in the beginning and 178.5 MB in the end (delta: -76.3 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.57 ms. Allocated memory is still 202.4 MB. Free memory was 178.5 MB in the beginning and 176.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 575.51 ms. Allocated memory is still 202.4 MB. Free memory was 176.5 MB in the beginning and 147.9 MB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1159.65 ms. Allocated memory was 202.4 MB in the beginning and 236.5 MB in the end (delta: 34.1 MB). Free memory was 147.3 MB in the beginning and 200.8 MB in the end (delta: -53.5 MB). Peak memory consumption was 66.2 MB. 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 someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L126] float x = __VERIFIER_nondet_float(); [L127] float y = -1.0f / 0.0f; [L129] CALL isfinite_float(x) [L109] __int32_t ix; [L111] ieee_float_shape_type gf_u; [L112] gf_u.value = (x) [L113] EXPR gf_u.word [L113] (ix) = gf_u.word [L115] ix &= 0x7fffffff [L116] return (((ix) < 0x7f800000L)); [L129] RET isfinite_float(x) [L129] COND TRUE isfinite_float(x) [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] COND TRUE res != x [L135] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 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: 73 SDtfs, 6 SDslu, 63 SDs, 0 SdLazy, 78 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 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...