/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/stateful_check.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 01:26:06,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:26:06,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:26:06,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:26:07,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:26:07,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:26:07,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:26:07,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:26:07,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:26:07,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:26:07,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:26:07,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:26:07,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:26:07,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:26:07,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:26:07,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:26:07,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:26:07,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:26:07,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:26:07,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:26:07,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:26:07,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:26:07,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:26:07,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:26:07,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:26:07,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:26:07,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:26:07,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:26:07,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:26:07,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 01:26:07,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 01:26:07,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 01:26:07,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 01:26:07,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 01:26:07,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 01:26:07,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 01:26:07,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 01:26:07,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 01:26:07,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:26:07,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:26:07,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:26:07,081 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 [2020-08-22 01:26:07,103 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:26:07,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:26:07,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:26:07,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:26:07,105 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:26:07,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:26:07,105 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:26:07,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:26:07,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:26:07,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:26:07,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:26:07,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:26:07,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:26:07,107 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:26:07,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:26:07,107 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:26:07,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:26:07,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:26:07,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:26:07,108 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:26:07,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:26:07,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:26:07,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:26:07,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:26:07,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:26:07,109 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:26:07,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:26:07,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:26:07,110 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:26:07,110 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-08-22 01:26:07,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:26:07,431 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:26:07,434 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:26:07,436 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:26:07,436 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:26:07,437 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-08-22 01:26:07,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0bb60aa3/cbcb8c0743534430b326ed17adf7a101/FLAG852723550 [2020-08-22 01:26:07,972 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:26:07,973 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-08-22 01:26:07,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0bb60aa3/cbcb8c0743534430b326ed17adf7a101/FLAG852723550 [2020-08-22 01:26:08,392 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0bb60aa3/cbcb8c0743534430b326ed17adf7a101 [2020-08-22 01:26:08,410 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:26:08,414 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:26:08,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:26:08,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:26:08,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:26:08,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:26:08" (1/1) ... [2020-08-22 01:26:08,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b3ac5cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:26:08, skipping insertion in model container [2020-08-22 01:26:08,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:26:08" (1/1) ... [2020-08-22 01:26:08,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:26:08,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:26:08,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:26:08,804 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:26:08,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:26:08,863 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:26:08,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:26:08 WrapperNode [2020-08-22 01:26:08,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:26:08,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:26:08,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:26:08,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:26:08,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:26:08" (1/1) ... [2020-08-22 01:26:08,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:26:08" (1/1) ... [2020-08-22 01:26:08,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:26:08" (1/1) ... [2020-08-22 01:26:08,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:26:08" (1/1) ... [2020-08-22 01:26:08,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:26:08" (1/1) ... [2020-08-22 01:26:08,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:26:08" (1/1) ... [2020-08-22 01:26:09,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:26:08" (1/1) ... [2020-08-22 01:26:09,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:26:09,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:26:09,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:26:09,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:26:09,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:26:08" (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 [2020-08-22 01:26:09,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:26:09,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:26:09,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-08-22 01:26:09,071 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-08-22 01:26:09,072 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-08-22 01:26:09,072 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2020-08-22 01:26:09,072 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2020-08-22 01:26:09,072 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2020-08-22 01:26:09,072 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2020-08-22 01:26:09,072 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2020-08-22 01:26:09,073 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2020-08-22 01:26:09,073 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:26:09,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:26:09,073 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-08-22 01:26:09,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 01:26:09,073 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-08-22 01:26:09,074 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-08-22 01:26:09,074 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2020-08-22 01:26:09,074 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2020-08-22 01:26:09,074 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2020-08-22 01:26:09,074 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2020-08-22 01:26:09,074 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2020-08-22 01:26:09,075 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2020-08-22 01:26:09,075 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:26:09,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:26:09,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:26:09,490 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:26:09,490 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 01:26:09,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:26:09 BoogieIcfgContainer [2020-08-22 01:26:09,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:26:09,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:26:09,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:26:09,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:26:09,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:26:08" (1/3) ... [2020-08-22 01:26:09,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570a32b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:26:09, skipping insertion in model container [2020-08-22 01:26:09,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:26:08" (2/3) ... [2020-08-22 01:26:09,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570a32b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:26:09, skipping insertion in model container [2020-08-22 01:26:09,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:26:09" (3/3) ... [2020-08-22 01:26:09,504 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2020-08-22 01:26:09,514 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:26:09,523 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:26:09,538 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:26:09,565 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:26:09,565 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:26:09,566 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:26:09,566 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:26:09,566 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:26:09,566 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:26:09,566 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:26:09,566 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:26:09,584 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-08-22 01:26:09,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-22 01:26:09,592 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:26:09,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:26:09,594 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:26:09,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:26:09,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1865767033, now seen corresponding path program 1 times [2020-08-22 01:26:09,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:26:09,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787278281] [2020-08-22 01:26:09,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:26:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:09,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:26:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:09,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:26:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:09,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:26:09,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787278281] [2020-08-22 01:26:09,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:26:09,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 01:26:09,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254089542] [2020-08-22 01:26:09,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 01:26:09,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:26:09,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 01:26:09,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 01:26:09,825 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-08-22 01:26:10,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:26:10,017 INFO L93 Difference]: Finished difference Result 140 states and 185 transitions. [2020-08-22 01:26:10,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 01:26:10,019 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-08-22 01:26:10,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:26:10,033 INFO L225 Difference]: With dead ends: 140 [2020-08-22 01:26:10,033 INFO L226 Difference]: Without dead ends: 70 [2020-08-22 01:26:10,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 01:26:10,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-08-22 01:26:10,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2020-08-22 01:26:10,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-08-22 01:26:10,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2020-08-22 01:26:10,093 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 16 [2020-08-22 01:26:10,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:26:10,094 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2020-08-22 01:26:10,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 01:26:10,095 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2020-08-22 01:26:10,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-22 01:26:10,096 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:26:10,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:26:10,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:26:10,097 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:26:10,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:26:10,097 INFO L82 PathProgramCache]: Analyzing trace with hash 6927045, now seen corresponding path program 1 times [2020-08-22 01:26:10,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:26:10,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280321529] [2020-08-22 01:26:10,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:26:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:10,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:26:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:10,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:26:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:10,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:26:10,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280321529] [2020-08-22 01:26:10,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:26:10,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:26:10,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698273266] [2020-08-22 01:26:10,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:26:10,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:26:10,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:26:10,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:26:10,211 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand 5 states. [2020-08-22 01:26:10,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:26:10,516 INFO L93 Difference]: Finished difference Result 112 states and 143 transitions. [2020-08-22 01:26:10,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 01:26:10,517 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-08-22 01:26:10,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:26:10,520 INFO L225 Difference]: With dead ends: 112 [2020-08-22 01:26:10,520 INFO L226 Difference]: Without dead ends: 106 [2020-08-22 01:26:10,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:26:10,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-08-22 01:26:10,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2020-08-22 01:26:10,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-08-22 01:26:10,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 132 transitions. [2020-08-22 01:26:10,559 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 132 transitions. Word has length 17 [2020-08-22 01:26:10,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:26:10,560 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 132 transitions. [2020-08-22 01:26:10,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:26:10,560 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 132 transitions. [2020-08-22 01:26:10,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-22 01:26:10,562 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:26:10,562 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] [2020-08-22 01:26:10,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:26:10,562 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:26:10,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:26:10,563 INFO L82 PathProgramCache]: Analyzing trace with hash -695621135, now seen corresponding path program 1 times [2020-08-22 01:26:10,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:26:10,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294705837] [2020-08-22 01:26:10,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:26:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:10,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:26:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:10,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:26:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:10,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 01:26:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:10,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:26:10,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294705837] [2020-08-22 01:26:10,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:26:10,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 01:26:10,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504644744] [2020-08-22 01:26:10,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 01:26:10,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:26:10,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 01:26:10,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 01:26:10,661 INFO L87 Difference]: Start difference. First operand 102 states and 132 transitions. Second operand 6 states. [2020-08-22 01:26:10,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:26:10,914 INFO L93 Difference]: Finished difference Result 253 states and 356 transitions. [2020-08-22 01:26:10,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 01:26:10,915 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-08-22 01:26:10,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:26:10,918 INFO L225 Difference]: With dead ends: 253 [2020-08-22 01:26:10,918 INFO L226 Difference]: Without dead ends: 162 [2020-08-22 01:26:10,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:26:10,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-22 01:26:10,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 126. [2020-08-22 01:26:10,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-22 01:26:10,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 169 transitions. [2020-08-22 01:26:10,951 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 169 transitions. Word has length 29 [2020-08-22 01:26:10,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:26:10,951 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 169 transitions. [2020-08-22 01:26:10,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 01:26:10,952 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 169 transitions. [2020-08-22 01:26:10,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 01:26:10,953 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:26:10,953 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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] [2020-08-22 01:26:10,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 01:26:10,954 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:26:10,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:26:10,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1328709660, now seen corresponding path program 1 times [2020-08-22 01:26:10,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:26:10,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236025928] [2020-08-22 01:26:10,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:26:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:11,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:26:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:11,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:26:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:11,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:26:11,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:11,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-22 01:26:11,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:11,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:26:11,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236025928] [2020-08-22 01:26:11,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:26:11,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 01:26:11,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500108810] [2020-08-22 01:26:11,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 01:26:11,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:26:11,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 01:26:11,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:26:11,114 INFO L87 Difference]: Start difference. First operand 126 states and 169 transitions. Second operand 7 states. [2020-08-22 01:26:11,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:26:11,409 INFO L93 Difference]: Finished difference Result 350 states and 513 transitions. [2020-08-22 01:26:11,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 01:26:11,410 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-08-22 01:26:11,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:26:11,415 INFO L225 Difference]: With dead ends: 350 [2020-08-22 01:26:11,416 INFO L226 Difference]: Without dead ends: 235 [2020-08-22 01:26:11,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:26:11,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-08-22 01:26:11,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 150. [2020-08-22 01:26:11,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-22 01:26:11,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 208 transitions. [2020-08-22 01:26:11,460 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 208 transitions. Word has length 40 [2020-08-22 01:26:11,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:26:11,465 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 208 transitions. [2020-08-22 01:26:11,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 01:26:11,465 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 208 transitions. [2020-08-22 01:26:11,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 01:26:11,469 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:26:11,470 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 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] [2020-08-22 01:26:11,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 01:26:11,471 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:26:11,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:26:11,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1520942249, now seen corresponding path program 1 times [2020-08-22 01:26:11,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:26:11,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463623418] [2020-08-22 01:26:11,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:26:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:11,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:26:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:11,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:26:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:11,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:26:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:11,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 01:26:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:11,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 01:26:11,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:11,639 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:26:11,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463623418] [2020-08-22 01:26:11,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:26:11,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 01:26:11,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103370878] [2020-08-22 01:26:11,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 01:26:11,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:26:11,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 01:26:11,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:26:11,642 INFO L87 Difference]: Start difference. First operand 150 states and 208 transitions. Second operand 8 states. [2020-08-22 01:26:11,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:26:11,983 INFO L93 Difference]: Finished difference Result 447 states and 675 transitions. [2020-08-22 01:26:11,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 01:26:11,983 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 01:26:11,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:26:11,987 INFO L225 Difference]: With dead ends: 447 [2020-08-22 01:26:11,987 INFO L226 Difference]: Without dead ends: 308 [2020-08-22 01:26:11,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-08-22 01:26:11,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-08-22 01:26:12,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 174. [2020-08-22 01:26:12,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-08-22 01:26:12,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 249 transitions. [2020-08-22 01:26:12,008 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 249 transitions. Word has length 51 [2020-08-22 01:26:12,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:26:12,008 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 249 transitions. [2020-08-22 01:26:12,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 01:26:12,009 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 249 transitions. [2020-08-22 01:26:12,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-22 01:26:12,011 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:26:12,011 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 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] [2020-08-22 01:26:12,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 01:26:12,012 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:26:12,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:26:12,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1574199465, now seen corresponding path program 1 times [2020-08-22 01:26:12,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:26:12,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649797582] [2020-08-22 01:26:12,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:26:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:12,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:26:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:12,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:26:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:12,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:26:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:12,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 01:26:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:12,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 01:26:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:12,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 01:26:12,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:12,128 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-22 01:26:12,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649797582] [2020-08-22 01:26:12,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:26:12,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 01:26:12,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723708543] [2020-08-22 01:26:12,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 01:26:12,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:26:12,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 01:26:12,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 01:26:12,131 INFO L87 Difference]: Start difference. First operand 174 states and 249 transitions. Second operand 6 states. [2020-08-22 01:26:12,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:26:12,282 INFO L93 Difference]: Finished difference Result 318 states and 465 transitions. [2020-08-22 01:26:12,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 01:26:12,283 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-08-22 01:26:12,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:26:12,285 INFO L225 Difference]: With dead ends: 318 [2020-08-22 01:26:12,285 INFO L226 Difference]: Without dead ends: 155 [2020-08-22 01:26:12,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:26:12,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-22 01:26:12,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 98. [2020-08-22 01:26:12,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-22 01:26:12,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 130 transitions. [2020-08-22 01:26:12,297 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 130 transitions. Word has length 63 [2020-08-22 01:26:12,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:26:12,297 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 130 transitions. [2020-08-22 01:26:12,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 01:26:12,298 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 130 transitions. [2020-08-22 01:26:12,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-22 01:26:12,300 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:26:12,300 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 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] [2020-08-22 01:26:12,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 01:26:12,300 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:26:12,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:26:12,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1192820603, now seen corresponding path program 1 times [2020-08-22 01:26:12,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:26:12,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353473496] [2020-08-22 01:26:12,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:26:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 01:26:12,322 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 01:26:12,323 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 01:26:12,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 01:26:12,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 01:26:12 BoogieIcfgContainer [2020-08-22 01:26:12,353 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 01:26:12,357 INFO L168 Benchmark]: Toolchain (without parser) took 3941.66 ms. Allocated memory was 140.5 MB in the beginning and 243.8 MB in the end (delta: 103.3 MB). Free memory was 102.8 MB in the beginning and 130.1 MB in the end (delta: -27.2 MB). Peak memory consumption was 76.1 MB. Max. memory is 7.1 GB. [2020-08-22 01:26:12,359 INFO L168 Benchmark]: CDTParser took 0.25 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. [2020-08-22 01:26:12,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 432.86 ms. Allocated memory is still 140.5 MB. Free memory was 102.6 MB in the beginning and 92.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-08-22 01:26:12,367 INFO L168 Benchmark]: Boogie Preprocessor took 141.22 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 92.2 MB in the beginning and 180.3 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-08-22 01:26:12,368 INFO L168 Benchmark]: RCFGBuilder took 485.48 ms. Allocated memory is still 202.4 MB. Free memory was 180.3 MB in the beginning and 160.5 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-08-22 01:26:12,369 INFO L168 Benchmark]: TraceAbstraction took 2855.88 ms. Allocated memory was 202.4 MB in the beginning and 243.8 MB in the end (delta: 41.4 MB). Free memory was 159.8 MB in the beginning and 130.1 MB in the end (delta: 29.8 MB). Peak memory consumption was 71.2 MB. Max. memory is 7.1 GB. [2020-08-22 01:26:12,380 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 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 432.86 ms. Allocated memory is still 140.5 MB. Free memory was 102.6 MB in the beginning and 92.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 141.22 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 92.2 MB in the beginning and 180.3 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 485.48 ms. Allocated memory is still 202.4 MB. Free memory was 180.3 MB in the beginning and 160.5 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2855.88 ms. Allocated memory was 202.4 MB in the beginning and 243.8 MB in the end (delta: 41.4 MB). Free memory was 159.8 MB in the beginning and 130.1 MB in the end (delta: 29.8 MB). Peak memory consumption was 71.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] int ldv_mutex = 1; [L11] int open_called = 0; [L74] int ldv_s_misc_fops_file_operations = 0; [L75] CALL my_init() [L69] open_called = 0 [L70] return 0; [L75] RET my_init() [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L81] COND TRUE ldv_s_misc_fops_file_operations==0 [L82] CALL misc_open() [L57] COND TRUE __VERIFIER_nondet_int() [L59] return 1; [L82] RET misc_open() [L83] ldv_s_misc_fops_file_operations++ [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L89] COND TRUE ldv_s_misc_fops_file_operations==1 [L90] CALL misc_read() [L52] return 0; [L90] RET misc_read() [L91] ldv_s_misc_fops_file_operations++ [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L97] COND TRUE ldv_s_misc_fops_file_operations==2 [L98] CALL misc_llseek() [L48] return 0; [L98] RET misc_llseek() [L99] ldv_s_misc_fops_file_operations++ [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L104] case 3: [L105] COND TRUE ldv_s_misc_fops_file_operations==3 [L106] CALL misc_release() [L34] COND FALSE !(\read(open_called)) [L41] CALL mutex_lock() [L16] (ldv_mutex == 1) ? 0 : __blast_assert() [L17] ldv_mutex = 2 [L41] RET mutex_lock() [L42] CALL mutex_lock() [L16] (ldv_mutex == 1) ? 0 : __blast_assert() [L16] CALL __blast_assert() [L4] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.7s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 408 SDtfs, 599 SDslu, 753 SDs, 0 SdLazy, 707 SolverSat, 229 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 321 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 279 NumberOfCodeBlocks, 279 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 210 ConstructedInterpolants, 0 QuantifiedInterpolants, 16438 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 25/39 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 proved your program to be incorrect! Received shutdown request...