/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=LOWLEXORDER --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/double_req_bl_1251b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:30:20,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:30:20,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:30:20,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:30:20,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:30:20,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:30:20,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:30:20,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:30:20,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:30:20,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:30:20,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:30:20,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:30:20,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:30:20,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:30:20,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:30:20,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:30:20,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:30:20,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:30:20,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:30:20,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:30:20,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:30:20,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:30:20,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:30:20,828 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:30:20,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:30:20,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:30:20,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:30:20,836 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:30:20,837 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:30:20,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:30:20,839 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:30:20,840 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:30:20,841 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:30:20,842 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:30:20,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:30:20,844 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:30:20,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:30:20,845 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:30:20,845 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:30:20,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:30:20,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:30:20,849 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 21:30:20,900 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:30:20,900 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:30:20,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:30:20,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:30:20,903 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:30:20,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:30:20,904 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:30:20,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:30:20,904 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:30:20,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:30:20,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:30:20,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:30:20,906 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:30:20,906 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:30:20,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:30:20,907 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:30:20,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:30:20,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:30:20,907 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:30:20,908 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:30:20,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:30:20,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:30:20,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:30:20,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:30:20,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:30:20,909 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:30:20,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:30:20,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:30:20,909 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:30:20,910 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:30:21,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:30:21,375 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:30:21,379 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:30:21,382 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:30:21,382 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:30:21,383 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c [2020-09-24 21:30:21,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09740af8d/4c726e6c3fb74c4199c1fc7b5643fc1c/FLAGc8dadf13a [2020-09-24 21:30:22,036 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:30:22,037 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c [2020-09-24 21:30:22,046 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09740af8d/4c726e6c3fb74c4199c1fc7b5643fc1c/FLAGc8dadf13a [2020-09-24 21:30:22,368 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09740af8d/4c726e6c3fb74c4199c1fc7b5643fc1c [2020-09-24 21:30:22,383 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:30:22,389 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:30:22,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:30:22,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:30:22,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:30:22,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:30:22" (1/1) ... [2020-09-24 21:30:22,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@377d8449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22, skipping insertion in model container [2020-09-24 21:30:22,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:30:22" (1/1) ... [2020-09-24 21:30:22,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:30:22,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:30:22,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:30:22,673 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:30:22,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:30:22,737 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:30:22,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22 WrapperNode [2020-09-24 21:30:22,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:30:22,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:30:22,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:30:22,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:30:22,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22" (1/1) ... [2020-09-24 21:30:22,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22" (1/1) ... [2020-09-24 21:30:22,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22" (1/1) ... [2020-09-24 21:30:22,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22" (1/1) ... [2020-09-24 21:30:22,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22" (1/1) ... [2020-09-24 21:30:22,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22" (1/1) ... [2020-09-24 21:30:22,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22" (1/1) ... [2020-09-24 21:30:22,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:30:22,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:30:22,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:30:22,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:30:22,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:30:22,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:30:22,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:30:22,969 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-24 21:30:22,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-09-24 21:30:22,969 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-09-24 21:30:22,970 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:30:22,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:30:22,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-24 21:30:22,971 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-24 21:30:22,971 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-09-24 21:30:22,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 21:30:22,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 21:30:22,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:30:22,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:30:22,972 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-09-24 21:30:22,973 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:30:22,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:30:22,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:30:22,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:30:22,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 21:30:23,440 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:30:23,441 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 21:30:23,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:30:23 BoogieIcfgContainer [2020-09-24 21:30:23,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:30:23,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:30:23,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:30:23,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:30:23,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:30:22" (1/3) ... [2020-09-24 21:30:23,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c081c9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:30:23, skipping insertion in model container [2020-09-24 21:30:23,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22" (2/3) ... [2020-09-24 21:30:23,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c081c9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:30:23, skipping insertion in model container [2020-09-24 21:30:23,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:30:23" (3/3) ... [2020-09-24 21:30:23,457 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b.c [2020-09-24 21:30:23,470 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:30:23,482 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:30:23,506 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:30:23,536 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:30:23,536 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:30:23,537 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:30:23,537 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:30:23,537 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:30:23,537 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:30:23,537 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:30:23,537 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:30:23,560 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states. [2020-09-24 21:30:23,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-24 21:30:23,569 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:23,570 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] [2020-09-24 21:30:23,571 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:23,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:23,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1770687738, now seen corresponding path program 1 times [2020-09-24 21:30:23,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:23,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112361535] [2020-09-24 21:30:23,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:23,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:23,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:24,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:24,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 21:30:24,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:30:24,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-09-24 21:30:24,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:24,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:24,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 21:30:24,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:24,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:30:24,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:30:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:24,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:24,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:24,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:30:24,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:24,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 21:30:24,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:24,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:24,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:24,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:24,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:24,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:30:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:24,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:24,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:24,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:30:24,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:24,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:30:24,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:24,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:24,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:24,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:24,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:24,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 21:30:24,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:24,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:24,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:24,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:24,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:30:24,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:30:24,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 21:30:24,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:24,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:24,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:30:24,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:24,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:24,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:30:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:24,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:24,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:24,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:30:24,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:24,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:30:24,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:24,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:24,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 21:30:24,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:24,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:24,393 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 21:30:24,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112361535] [2020-09-24 21:30:24,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:30:24,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:30:24,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209715719] [2020-09-24 21:30:24,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:30:24,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:30:24,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:30:24,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:30:24,428 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 4 states. [2020-09-24 21:30:24,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:30:24,740 INFO L93 Difference]: Finished difference Result 141 states and 163 transitions. [2020-09-24 21:30:24,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 21:30:24,743 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-09-24 21:30:24,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:30:24,757 INFO L225 Difference]: With dead ends: 141 [2020-09-24 21:30:24,757 INFO L226 Difference]: Without dead ends: 74 [2020-09-24 21:30:24,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 21:30:24,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-24 21:30:24,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-24 21:30:24,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 21:30:24,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2020-09-24 21:30:24,819 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 40 [2020-09-24 21:30:24,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:30:24,819 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2020-09-24 21:30:24,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:30:24,820 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2020-09-24 21:30:24,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 21:30:24,823 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:24,823 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:30:24,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:30:24,824 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:24,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:24,825 INFO L82 PathProgramCache]: Analyzing trace with hash 524719120, now seen corresponding path program 1 times [2020-09-24 21:30:24,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:24,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585292449] [2020-09-24 21:30:24,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:24,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:25,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:25,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 21:30:25,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:25,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-24 21:30:25,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:25,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:25,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-24 21:30:25,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:30:25,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:25,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:30:25,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:25,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:25,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:25,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:30:25,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:25,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:30:25,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:25,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:25,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:25,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:25,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:25,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:30:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:25,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:25,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:25,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:30:25,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:25,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:30:25,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:25,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:25,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:25,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:25,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:25,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 21:30:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:25,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:25,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:25,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 21:30:25,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:25,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-24 21:30:25,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:25,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:25,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 21:30:25,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:30:25,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:25,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:30:25,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:25,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:25,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:25,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 21:30:25,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:25,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 21:30:25,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:25,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:25,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:25,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 21:30:25,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:25,368 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 21:30:25,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585292449] [2020-09-24 21:30:25,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:30:25,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:30:25,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308282936] [2020-09-24 21:30:25,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:30:25,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:30:25,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:30:25,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:30:25,373 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand 6 states. [2020-09-24 21:30:25,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:30:25,605 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2020-09-24 21:30:25,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:30:25,605 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-09-24 21:30:25,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:30:25,610 INFO L225 Difference]: With dead ends: 88 [2020-09-24 21:30:25,610 INFO L226 Difference]: Without dead ends: 79 [2020-09-24 21:30:25,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:30:25,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-24 21:30:25,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2020-09-24 21:30:25,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-24 21:30:25,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-09-24 21:30:25,629 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 54 [2020-09-24 21:30:25,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:30:25,630 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-09-24 21:30:25,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:30:25,630 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-09-24 21:30:25,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-24 21:30:25,632 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:25,632 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:30:25,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:30:25,633 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:25,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:25,633 INFO L82 PathProgramCache]: Analyzing trace with hash 449549248, now seen corresponding path program 1 times [2020-09-24 21:30:25,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:25,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403049403] [2020-09-24 21:30:25,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:25,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:25,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:25,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 21:30:25,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:25,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-24 21:30:25,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:25,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:25,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-24 21:30:25,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:30:25,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:25,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:30:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:25,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:25,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:25,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:30:25,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:25,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:30:25,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:25,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:25,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:25,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:30:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:25,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:25,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:25,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:30:25,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:25,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:30:25,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:25,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:25,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:25,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:25,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:25,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 21:30:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:25,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:25,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:25,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 21:30:25,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:25,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-24 21:30:25,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:25,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:25,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 21:30:25,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:30:25,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:26,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:30:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:26,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:26,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:26,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 21:30:26,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:26,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 21:30:26,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:26,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:26,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:26,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 21:30:26,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:26,124 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 21:30:26,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403049403] [2020-09-24 21:30:26,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:30:26,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:30:26,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752907651] [2020-09-24 21:30:26,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:30:26,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:30:26,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:30:26,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:30:26,127 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 6 states. [2020-09-24 21:30:26,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:30:26,349 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2020-09-24 21:30:26,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:30:26,350 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-09-24 21:30:26,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:30:26,352 INFO L225 Difference]: With dead ends: 92 [2020-09-24 21:30:26,352 INFO L226 Difference]: Without dead ends: 83 [2020-09-24 21:30:26,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:30:26,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-24 21:30:26,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2020-09-24 21:30:26,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-24 21:30:26,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-09-24 21:30:26,364 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 55 [2020-09-24 21:30:26,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:30:26,365 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-09-24 21:30:26,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:30:26,365 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-09-24 21:30:26,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 21:30:26,367 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:26,367 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:30:26,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:30:26,368 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:26,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:26,368 INFO L82 PathProgramCache]: Analyzing trace with hash 947235477, now seen corresponding path program 1 times [2020-09-24 21:30:26,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:26,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399958382] [2020-09-24 21:30:26,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:26,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:26,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:26,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 21:30:26,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:26,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-24 21:30:26,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:26,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:26,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-24 21:30:26,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:30:26,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:26,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:30:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:26,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:26,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:26,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:30:26,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:26,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:30:26,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:26,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:26,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:26,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:26,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:26,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:30:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:26,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:26,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:26,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:30:26,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:26,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:30:26,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:26,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:26,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:26,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:26,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:26,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 21:30:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:26,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:26,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:26,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 21:30:26,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:26,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-24 21:30:26,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:26,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:26,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 21:30:26,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:30:26,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:26,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:30:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:26,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:26,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:26,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 21:30:26,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:26,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 21:30:26,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:26,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:26,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:26,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 21:30:26,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:26,803 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 21:30:26,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399958382] [2020-09-24 21:30:26,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:30:26,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:30:26,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692529926] [2020-09-24 21:30:26,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:30:26,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:30:26,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:30:26,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:30:26,806 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 6 states. [2020-09-24 21:30:27,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:30:27,016 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2020-09-24 21:30:27,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:30:27,016 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-09-24 21:30:27,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:30:27,018 INFO L225 Difference]: With dead ends: 92 [2020-09-24 21:30:27,018 INFO L226 Difference]: Without dead ends: 83 [2020-09-24 21:30:27,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:30:27,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-24 21:30:27,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2020-09-24 21:30:27,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-24 21:30:27,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-09-24 21:30:27,028 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 56 [2020-09-24 21:30:27,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:30:27,029 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-09-24 21:30:27,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:30:27,029 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-09-24 21:30:27,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 21:30:27,030 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:27,030 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:30:27,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:30:27,031 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:27,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:27,031 INFO L82 PathProgramCache]: Analyzing trace with hash 2023591653, now seen corresponding path program 1 times [2020-09-24 21:30:27,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:27,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419618011] [2020-09-24 21:30:27,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:27,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:27,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:27,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 21:30:27,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:27,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-24 21:30:27,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:27,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:27,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-24 21:30:27,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:30:27,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:27,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:30:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:27,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:27,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:27,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:30:27,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:27,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:30:27,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:27,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:27,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:27,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:27,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:27,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:30:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:27,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:27,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:27,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:30:27,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:27,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:30:27,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:27,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:27,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:27,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:27,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:27,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 21:30:27,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:27,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:27,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:27,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 21:30:27,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:27,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-24 21:30:27,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:27,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:27,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 21:30:27,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:30:27,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:27,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:30:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:27,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:27,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:27,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 21:30:27,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:27,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 21:30:27,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:27,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:27,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:27,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 21:30:27,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:27,525 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 21:30:27,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419618011] [2020-09-24 21:30:27,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:30:27,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:30:27,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863761973] [2020-09-24 21:30:27,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:30:27,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:30:27,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:30:27,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:30:27,532 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 6 states. [2020-09-24 21:30:27,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:30:27,774 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2020-09-24 21:30:27,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:30:27,775 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-09-24 21:30:27,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:30:27,780 INFO L225 Difference]: With dead ends: 92 [2020-09-24 21:30:27,780 INFO L226 Difference]: Without dead ends: 83 [2020-09-24 21:30:27,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:30:27,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-24 21:30:27,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2020-09-24 21:30:27,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-24 21:30:27,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-09-24 21:30:27,805 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 57 [2020-09-24 21:30:27,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:30:27,805 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-09-24 21:30:27,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:30:27,805 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-09-24 21:30:27,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 21:30:27,808 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:27,808 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:30:27,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:30:27,811 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:27,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:27,812 INFO L82 PathProgramCache]: Analyzing trace with hash 425668389, now seen corresponding path program 1 times [2020-09-24 21:30:27,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:27,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745192820] [2020-09-24 21:30:27,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 21:30:27,840 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 21:30:27,840 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 21:30:27,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:30:27,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:30:27 BoogieIcfgContainer [2020-09-24 21:30:27,886 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:30:27,892 INFO L168 Benchmark]: Toolchain (without parser) took 5504.44 ms. Allocated memory was 140.5 MB in the beginning and 246.4 MB in the end (delta: 105.9 MB). Free memory was 103.9 MB in the beginning and 107.8 MB in the end (delta: -3.8 MB). Peak memory consumption was 102.1 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:27,896 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 21:30:27,897 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.93 ms. Allocated memory is still 140.5 MB. Free memory was 103.3 MB in the beginning and 92.0 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:27,906 INFO L168 Benchmark]: Boogie Preprocessor took 146.31 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 92.0 MB in the beginning and 181.3 MB in the end (delta: -89.3 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:27,907 INFO L168 Benchmark]: RCFGBuilder took 561.85 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 158.9 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:27,908 INFO L168 Benchmark]: TraceAbstraction took 4438.39 ms. Allocated memory was 203.9 MB in the beginning and 246.4 MB in the end (delta: 42.5 MB). Free memory was 158.3 MB in the beginning and 107.8 MB in the end (delta: 50.5 MB). Peak memory consumption was 93.0 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:27,925 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 347.93 ms. Allocated memory is still 140.5 MB. Free memory was 103.3 MB in the beginning and 92.0 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 146.31 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 92.0 MB in the beginning and 181.3 MB in the end (delta: -89.3 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 561.85 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 158.9 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4438.39 ms. Allocated memory was 203.9 MB in the beginning and 246.4 MB in the end (delta: 42.5 MB). Free memory was 158.3 MB in the beginning and 107.8 MB in the end (delta: 50.5 MB). Peak memory consumption was 93.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 78]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 77, overapproximation of someBinaryArithmeticDOUBLEoperation at line 65. Possible FailurePath: [L64] double x = __VERIFIER_nondet_double(); [L65] double y = 0.0 / 0.0; [L72] CALL, EXPR isnan_double(x) [L16] return x != x; [L72] RET, EXPR isnan_double(x) [L72] COND TRUE !isnan_double(x) [L74] CALL, EXPR fmax_double(x, y) [L55] CALL, EXPR __fpclassify_double(x) [L27] __uint32_t msw, lsw; [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (msw) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lsw) = ew_u.parts.lsw [L36-L37] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L39-L40] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L42-L43] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L46-L47] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L50] return 0; [L55] RET, EXPR __fpclassify_double(x) [L55] COND TRUE __fpclassify_double(x) == 0 [L56] return y; [L74] RET, EXPR fmax_double(x, y) [L74] double res = fmax_double(x, y); [L77] COND TRUE res != x [L78] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 401 SDtfs, 157 SDslu, 734 SDs, 0 SdLazy, 575 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred 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, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 319 NumberOfCodeBlocks, 319 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 257 ConstructedInterpolants, 0 QuantifiedInterpolants, 24072 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...