/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 SingleStatement --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=SMALLEST --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_1051.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:11:06,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:11:06,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:11:06,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:11:06,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:11:06,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:11:06,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:11:06,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:11:06,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:11:06,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:11:06,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:11:06,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:11:06,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:11:06,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:11:06,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:11:06,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:11:06,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:11:06,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:11:06,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:11:06,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:11:06,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:11:06,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:11:06,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:11:06,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:11:06,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:11:06,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:11:06,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:11:06,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:11:06,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:11:06,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:11:06,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:11:06,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:11:06,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:11:06,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:11:06,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:11:06,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:11:06,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:11:06,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:11:06,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:11:06,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:11:06,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:11:06,464 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 [2020-09-24 18:11:06,490 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:11:06,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:11:06,492 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:11:06,492 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:11:06,492 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:11:06,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:11:06,492 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:11:06,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:11:06,493 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:11:06,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:11:06,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:11:06,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:11:06,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:11:06,494 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:11:06,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:11:06,494 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:11:06,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:11:06,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:11:06,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:11:06,495 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:11:06,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:11:06,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:11:06,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:11:06,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:11:06,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:11:06,497 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:11:06,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:11:06,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:11:06,497 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:11:06,497 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 -> SingleStatement 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=SMALLEST;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;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;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;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;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;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;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;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:11:07,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:11:07,042 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:11:07,049 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:11:07,051 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:11:07,053 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:11:07,054 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1051.c [2020-09-24 18:11:07,133 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66c50e9c6/010f4f7d78114cd6840b85a03d47486c/FLAG7df1a5d3f [2020-09-24 18:11:07,660 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:11:07,662 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1051.c [2020-09-24 18:11:07,672 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66c50e9c6/010f4f7d78114cd6840b85a03d47486c/FLAG7df1a5d3f [2020-09-24 18:11:07,969 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66c50e9c6/010f4f7d78114cd6840b85a03d47486c [2020-09-24 18:11:07,984 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:11:07,990 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:11:07,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:11:07,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:11:07,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:11:07,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:11:07" (1/1) ... [2020-09-24 18:11:08,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cf7e795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:07, skipping insertion in model container [2020-09-24 18:11:08,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:11:07" (1/1) ... [2020-09-24 18:11:08,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:11:08,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:11:08,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:11:08,345 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:11:08,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:11:08,499 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:11:08,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:08 WrapperNode [2020-09-24 18:11:08,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:11:08,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:11:08,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:11:08,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:11:08,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:08" (1/1) ... [2020-09-24 18:11:08,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:08" (1/1) ... [2020-09-24 18:11:08,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:08" (1/1) ... [2020-09-24 18:11:08,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:08" (1/1) ... [2020-09-24 18:11:08,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:08" (1/1) ... [2020-09-24 18:11:08,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:08" (1/1) ... [2020-09-24 18:11:08,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:08" (1/1) ... [2020-09-24 18:11:08,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:11:08,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:11:08,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:11:08,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:11:08,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:08" (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 [2020-09-24 18:11:08,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:11:08,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:11:08,638 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2020-09-24 18:11:08,638 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-09-24 18:11:08,638 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:11:08,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:11:08,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-24 18:11:08,639 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2020-09-24 18:11:08,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 18:11:08,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 18:11:08,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 18:11:08,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 18:11:08,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 18:11:08,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 18:11:08,640 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-09-24 18:11:08,640 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:11:08,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:11:08,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:11:09,026 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:11:09,027 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 18:11:09,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:11:09 BoogieIcfgContainer [2020-09-24 18:11:09,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:11:09,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:11:09,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:11:09,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:11:09,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:11:07" (1/3) ... [2020-09-24 18:11:09,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781a5590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:11:09, skipping insertion in model container [2020-09-24 18:11:09,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:08" (2/3) ... [2020-09-24 18:11:09,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781a5590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:11:09, skipping insertion in model container [2020-09-24 18:11:09,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:11:09" (3/3) ... [2020-09-24 18:11:09,043 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1051.c [2020-09-24 18:11:09,056 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:11:09,066 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:11:09,096 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:11:09,132 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:11:09,132 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:11:09,132 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:11:09,132 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:11:09,132 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:11:09,133 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:11:09,133 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:11:09,133 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:11:09,158 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-09-24 18:11:09,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 18:11:09,166 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:09,167 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, 1, 1, 1, 1, 1, 1] [2020-09-24 18:11:09,168 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:09,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:09,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1118854884, now seen corresponding path program 1 times [2020-09-24 18:11:09,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:09,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86837431] [2020-09-24 18:11:09,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:09,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:09,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:09,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 18:11:09,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:09,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-09-24 18:11:09,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:09,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:09,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 18:11:09,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:09,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-24 18:11:09,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:09,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:09,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:09,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:11:09,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:09,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:11:09,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:09,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:09,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:09,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:09,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:09,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 18:11:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:09,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:09,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:09,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 18:11:09,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:09,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 18:11:09,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:09,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:09,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 18:11:09,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:09,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:09,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 18:11:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:09,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:09,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:09,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:11:09,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:09,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:11:09,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:09,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:09,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:11:09,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:09,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:09,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:11:09,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86837431] [2020-09-24 18:11:09,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:11:09,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:11:09,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170000548] [2020-09-24 18:11:09,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:11:09,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:09,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:11:09,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:11:09,808 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2020-09-24 18:11:10,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:10,058 INFO L93 Difference]: Finished difference Result 136 states and 162 transitions. [2020-09-24 18:11:10,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 18:11:10,061 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-09-24 18:11:10,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:10,077 INFO L225 Difference]: With dead ends: 136 [2020-09-24 18:11:10,078 INFO L226 Difference]: Without dead ends: 69 [2020-09-24 18:11:10,082 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 [2020-09-24 18:11:10,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-24 18:11:10,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-09-24 18:11:10,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-24 18:11:10,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2020-09-24 18:11:10,144 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 34 [2020-09-24 18:11:10,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:10,144 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2020-09-24 18:11:10,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:11:10,145 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2020-09-24 18:11:10,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 18:11:10,147 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:10,148 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:11:10,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:11:10,148 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:10,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:10,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1275579326, now seen corresponding path program 1 times [2020-09-24 18:11:10,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:10,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591874404] [2020-09-24 18:11:10,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 18:11:10,227 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 18:11:10,228 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 18:11:10,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:11:10,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:11:10 BoogieIcfgContainer [2020-09-24 18:11:10,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:11:10,278 INFO L168 Benchmark]: Toolchain (without parser) took 2290.08 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 102.9 MB in the beginning and 91.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 66.5 MB. Max. memory is 7.1 GB. [2020-09-24 18:11:10,284 INFO L168 Benchmark]: CDTParser took 0.25 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: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 18:11:10,289 INFO L168 Benchmark]: CACSL2BoogieTranslator took 508.28 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 102.2 MB in the beginning and 181.3 MB in the end (delta: -79.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-09-24 18:11:10,290 INFO L168 Benchmark]: Boogie Preprocessor took 62.94 ms. Allocated memory is still 202.4 MB. Free memory was 181.3 MB in the beginning and 178.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-09-24 18:11:10,293 INFO L168 Benchmark]: RCFGBuilder took 470.07 ms. Allocated memory is still 202.4 MB. Free memory was 178.9 MB in the beginning and 156.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-09-24 18:11:10,294 INFO L168 Benchmark]: TraceAbstraction took 1238.96 ms. Allocated memory is still 202.4 MB. Free memory was 156.2 MB in the beginning and 91.9 MB in the end (delta: 64.3 MB). Peak memory consumption was 64.3 MB. Max. memory is 7.1 GB. [2020-09-24 18:11:10,297 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 508.28 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 102.2 MB in the beginning and 181.3 MB in the end (delta: -79.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.94 ms. Allocated memory is still 202.4 MB. Free memory was 181.3 MB in the beginning and 178.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 470.07 ms. Allocated memory is still 202.4 MB. Free memory was 178.9 MB in the beginning and 156.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1238.96 ms. Allocated memory is still 202.4 MB. Free memory was 156.2 MB in the beginning and 91.9 MB in the end (delta: 64.3 MB). Peak memory consumption was 64.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 71]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 58, overapproximation of someBinaryArithmeticFLOAToperation at line 45, overapproximation of bitwiseAnd at line 22. Possible FailurePath: [L12] static const float huge_floor = 1.0e30; [L66] float x = 0.0f / 0.0f; [L67] CALL, EXPR floor_float(x) [L15] __int32_t i0, j0; [L16] __uint32_t i, ix; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (i0) = gf_u.word [L22] ix = (i0 & 0x7fffffff) [L23] j0 = (ix >> 23) - 0x7f [L24] COND FALSE !(j0 < 23) [L44] COND TRUE !((ix) < 0x7f800000L) [L45] return x + x; [L67] RET, EXPR floor_float(x) [L67] float res = floor_float(x); [L70] CALL, EXPR isnan_float(res) [L58] return x != x; [L70] RET, EXPR isnan_float(res) [L70] COND TRUE !isnan_float(res) [L71] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 81 SDtfs, 19 SDslu, 58 SDs, 0 SdLazy, 83 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred 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, 0.4s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 1881 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...