/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:18:49,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:18:49,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:18:50,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:18:50,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:18:50,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:18:50,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:18:50,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:18:50,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:18:50,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:18:50,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:18:50,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:18:50,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:18:50,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:18:50,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:18:50,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:18:50,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:18:50,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:18:50,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:18:50,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:18:50,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:18:50,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:18:50,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:18:50,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:18:50,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:18:50,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:18:50,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:18:50,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:18:50,076 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:18:50,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:18:50,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:18:50,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:18:50,083 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:18:50,084 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:18:50,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:18:50,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:18:50,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:18:50,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:18:50,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:18:50,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:18:50,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:18:50,090 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 [2020-09-25 02:18:50,131 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:18:50,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:18:50,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:18:50,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:18:50,134 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:18:50,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:18:50,135 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:18:50,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:18:50,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:18:50,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:18:50,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:18:50,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:18:50,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:18:50,137 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:18:50,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:18:50,138 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:18:50,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:18:50,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:18:50,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:18:50,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:18:50,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:18:50,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:18:50,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:18:50,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:18:50,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:18:50,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:18:50,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:18:50,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:18:50,140 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:18:50,141 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:18:50,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:18:50,625 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:18:50,630 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:18:50,632 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:18:50,632 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:18:50,634 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/array-1.c [2020-09-25 02:18:50,717 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4e1dd5e5/8d21c26ff7e34e9995d97ad84b55dabf/FLAG8657a21a3 [2020-09-25 02:18:51,305 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:18:51,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/array-1.c [2020-09-25 02:18:51,315 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4e1dd5e5/8d21c26ff7e34e9995d97ad84b55dabf/FLAG8657a21a3 [2020-09-25 02:18:51,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4e1dd5e5/8d21c26ff7e34e9995d97ad84b55dabf [2020-09-25 02:18:51,656 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:18:51,663 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:18:51,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:18:51,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:18:51,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:18:51,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:18:51" (1/1) ... [2020-09-25 02:18:51,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69d5d771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:51, skipping insertion in model container [2020-09-25 02:18:51,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:18:51" (1/1) ... [2020-09-25 02:18:51,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:18:51,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:18:51,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:18:52,003 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:18:52,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:18:52,051 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:18:52,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:52 WrapperNode [2020-09-25 02:18:52,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:18:52,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:18:52,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:18:52,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:18:52,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:52" (1/1) ... [2020-09-25 02:18:52,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:52" (1/1) ... [2020-09-25 02:18:52,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:52" (1/1) ... [2020-09-25 02:18:52,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:52" (1/1) ... [2020-09-25 02:18:52,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:52" (1/1) ... [2020-09-25 02:18:52,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:52" (1/1) ... [2020-09-25 02:18:52,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:52" (1/1) ... [2020-09-25 02:18:52,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:18:52,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:18:52,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:18:52,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:18:52,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:52" (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 [2020-09-25 02:18:52,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:18:52,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:18:52,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 02:18:52,271 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:18:52,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:18:52,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 02:18:52,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:18:52,273 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:18:52,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 02:18:52,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 02:18:52,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 02:18:52,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 02:18:52,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:18:52,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:18:52,610 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:18:52,611 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 02:18:52,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:18:52 BoogieIcfgContainer [2020-09-25 02:18:52,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:18:52,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:18:52,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:18:52,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:18:52,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:18:51" (1/3) ... [2020-09-25 02:18:52,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@adb5eec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:18:52, skipping insertion in model container [2020-09-25 02:18:52,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:52" (2/3) ... [2020-09-25 02:18:52,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@adb5eec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:18:52, skipping insertion in model container [2020-09-25 02:18:52,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:18:52" (3/3) ... [2020-09-25 02:18:52,627 INFO L109 eAbstractionObserver]: Analyzing ICFG array-1.c [2020-09-25 02:18:52,642 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:18:52,652 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:18:52,675 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:18:52,704 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:18:52,705 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:18:52,705 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:18:52,705 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:18:52,705 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:18:52,705 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:18:52,705 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:18:52,705 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:18:52,729 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-09-25 02:18:52,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-25 02:18:52,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:52,737 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] [2020-09-25 02:18:52,738 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:52,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:52,745 INFO L82 PathProgramCache]: Analyzing trace with hash 683487989, now seen corresponding path program 1 times [2020-09-25 02:18:52,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:52,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850756271] [2020-09-25 02:18:52,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:52,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:53,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:53,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 02:18:53,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:53,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-09-25 02:18:53,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:53,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:18:53,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 02:18:53,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 02:18:53,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 02:18:53,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:53,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:53,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:53,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:18:53,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:53,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 02:18:53,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:53,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:53,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:53,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:53,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:53,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:18:53,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850756271] [2020-09-25 02:18:53,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:18:53,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:18:53,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131590413] [2020-09-25 02:18:53,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:18:53,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:53,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:18:53,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:18:53,596 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 5 states. [2020-09-25 02:18:53,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:53,877 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2020-09-25 02:18:53,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:18:53,879 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-09-25 02:18:53,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:53,891 INFO L225 Difference]: With dead ends: 75 [2020-09-25 02:18:53,891 INFO L226 Difference]: Without dead ends: 49 [2020-09-25 02:18:53,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:18:53,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-25 02:18:53,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 37. [2020-09-25 02:18:53,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-25 02:18:53,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2020-09-25 02:18:53,952 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 22 [2020-09-25 02:18:53,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:53,953 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2020-09-25 02:18:53,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:18:53,953 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2020-09-25 02:18:53,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 02:18:53,955 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:53,955 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] [2020-09-25 02:18:53,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:18:53,956 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:53,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:53,957 INFO L82 PathProgramCache]: Analyzing trace with hash 403649603, now seen corresponding path program 1 times [2020-09-25 02:18:53,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:53,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902546912] [2020-09-25 02:18:53,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:54,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:54,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:54,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:54,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 02:18:54,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:18:54,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 937 [2020-09-25 02:18:54,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:54,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:18:54,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 02:18:54,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 02:18:54,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:55,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:55,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:55,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:55,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:18:55,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:55,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:18:55,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:55,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:55,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:55,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:55,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:55,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:18:55,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902546912] [2020-09-25 02:18:55,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:18:55,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 02:18:55,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013587158] [2020-09-25 02:18:55,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:18:55,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:55,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:18:55,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:18:55,117 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 9 states. [2020-09-25 02:18:55,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:55,421 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2020-09-25 02:18:55,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:18:55,422 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-09-25 02:18:55,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:55,424 INFO L225 Difference]: With dead ends: 61 [2020-09-25 02:18:55,424 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 02:18:55,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:18:55,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 02:18:55,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 47. [2020-09-25 02:18:55,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-25 02:18:55,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-09-25 02:18:55,436 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 32 [2020-09-25 02:18:55,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:55,436 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-09-25 02:18:55,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:18:55,437 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-09-25 02:18:55,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 02:18:55,438 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:55,438 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] [2020-09-25 02:18:55,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:18:55,439 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:55,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:55,440 INFO L82 PathProgramCache]: Analyzing trace with hash -913737726, now seen corresponding path program 1 times [2020-09-25 02:18:55,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:55,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146690689] [2020-09-25 02:18:55,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:55,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:55,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:56,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:56,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 02:18:56,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:18:56,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 770 [2020-09-25 02:18:56,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:56,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:18:56,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 02:18:56,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 02:18:56,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:56,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:56,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:56,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:56,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:18:56,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:56,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:18:56,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:56,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:56,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:56,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:56,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:56,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:18:56,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146690689] [2020-09-25 02:18:56,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:18:56,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 02:18:56,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728155722] [2020-09-25 02:18:56,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:18:56,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:56,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:18:56,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:18:56,383 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 9 states. [2020-09-25 02:18:56,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:56,630 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2020-09-25 02:18:56,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:18:56,631 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-25 02:18:56,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:56,632 INFO L225 Difference]: With dead ends: 63 [2020-09-25 02:18:56,632 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 02:18:56,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:18:56,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 02:18:56,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2020-09-25 02:18:56,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 02:18:56,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-09-25 02:18:56,641 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 35 [2020-09-25 02:18:56,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:56,641 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-09-25 02:18:56,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:18:56,642 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-09-25 02:18:56,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 02:18:56,643 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:56,643 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:18:56,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:18:56,644 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:56,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:56,644 INFO L82 PathProgramCache]: Analyzing trace with hash -884839407, now seen corresponding path program 2 times [2020-09-25 02:18:56,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:56,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320725275] [2020-09-25 02:18:56,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:56,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:56,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:56,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:57,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:57,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:57,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:58,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:59,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:59,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 02:18:59,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 02:18:59,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3282 [2020-09-25 02:18:59,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:59,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:18:59,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 02:18:59,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:18:59,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:00,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:00,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:00,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:00,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:19:00,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:00,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:19:00,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:00,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:00,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:00,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:00,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:00,058 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:19:00,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320725275] [2020-09-25 02:19:00,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:19:00,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:19:00,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462114405] [2020-09-25 02:19:00,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:19:00,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:00,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:19:00,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:19:00,061 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 7 states. [2020-09-25 02:19:00,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:19:00,213 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2020-09-25 02:19:00,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 02:19:00,214 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-09-25 02:19:00,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:19:00,215 INFO L225 Difference]: With dead ends: 51 [2020-09-25 02:19:00,215 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 02:19:00,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:19:00,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 02:19:00,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 02:19:00,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 02:19:00,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 02:19:00,217 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2020-09-25 02:19:00,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:19:00,217 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 02:19:00,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:19:00,218 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 02:19:00,218 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 02:19:00,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:19:00,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 02:19:00,420 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 02:19:00,420 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 02:19:00,420 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 02:19:00,421 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-25 02:19:00,421 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 02:19:00,421 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 02:19:00,421 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 02:19:00,421 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 02:19:00,421 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 02:19:00,422 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 29) no Hoare annotation was computed. [2020-09-25 02:19:00,422 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-25 02:19:00,422 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-25 02:19:00,422 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-25 02:19:00,422 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 02:19:00,422 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 02:19:00,422 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 02:19:00,423 INFO L268 CegarLoopResult]: For program point L19-3(lines 19 24) no Hoare annotation was computed. [2020-09-25 02:19:00,423 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 02:19:00,423 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-25 02:19:00,423 INFO L268 CegarLoopResult]: For program point L19-4(line 19) no Hoare annotation was computed. [2020-09-25 02:19:00,423 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 02:19:00,423 INFO L268 CegarLoopResult]: For program point L19-5(line 19) no Hoare annotation was computed. [2020-09-25 02:19:00,424 INFO L264 CegarLoopResult]: At program point L19-6(lines 19 24) the Hoare annotation is: (let ((.cse0 (<= main_~SIZE~0 1)) (.cse1 (div main_~j~0 4294967296))) (or (and (<= (+ main_~j~0 1) main_~SIZE~0) .cse0 (< 0 (+ .cse1 1))) (and (<= main_~SIZE~0 main_~j~0) .cse0 (let ((.cse2 (<= 1 main_~SIZE~0)) (.cse3 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|))) (or (and .cse2 (= main_~menor~0 .cse3)) (and .cse2 (<= (+ main_~menor~0 1) .cse3)))) (< .cse1 (+ (div main_~SIZE~0 4294967296) 1))))) [2020-09-25 02:19:00,424 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 02:19:00,424 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 29) no Hoare annotation was computed. [2020-09-25 02:19:00,424 INFO L268 CegarLoopResult]: For program point L19-7(lines 19 24) no Hoare annotation was computed. [2020-09-25 02:19:00,424 INFO L268 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-09-25 02:19:00,424 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 29) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-25 02:19:00,424 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 02:19:00,426 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (<= 1 main_~SIZE~0)) (.cse2 (<= main_~SIZE~0 1)) (.cse1 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|))) (or (and .cse0 (= main_~menor~0 .cse1) .cse2 (= main_~menor~0 |main_#t~mem5|)) (and .cse0 (<= main_~menor~0 |main_#t~mem5|) .cse2 (<= (+ main_~menor~0 1) .cse1)))) [2020-09-25 02:19:00,426 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-09-25 02:19:00,426 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 02:19:00,426 INFO L268 CegarLoopResult]: For program point L22-1(lines 22 23) no Hoare annotation was computed. [2020-09-25 02:19:00,426 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 02:19:00,426 INFO L268 CegarLoopResult]: For program point L22-2(line 22) no Hoare annotation was computed. [2020-09-25 02:19:00,427 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-25 02:19:00,427 INFO L268 CegarLoopResult]: For program point L20-2(line 20) no Hoare annotation was computed. [2020-09-25 02:19:00,427 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-25 02:19:00,427 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 02:19:00,427 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-25 02:19:00,427 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-25 02:19:00,428 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-25 02:19:00,428 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 02:19:00,428 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-25 02:19:00,428 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-25 02:19:00,428 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-25 02:19:00,445 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 02:19:00,446 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 02:19:00,455 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 02:19:00,455 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 02:19:00,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:19:00 BoogieIcfgContainer [2020-09-25 02:19:00,476 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:19:00,482 INFO L168 Benchmark]: Toolchain (without parser) took 8820.21 ms. Allocated memory was 147.3 MB in the beginning and 281.0 MB in the end (delta: 133.7 MB). Free memory was 104.0 MB in the beginning and 108.5 MB in the end (delta: -4.5 MB). Peak memory consumption was 129.2 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:00,483 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 02:19:00,483 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.49 ms. Allocated memory is still 147.3 MB. Free memory was 103.3 MB in the beginning and 93.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:00,485 INFO L168 Benchmark]: Boogie Preprocessor took 134.43 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 93.5 MB in the beginning and 181.8 MB in the end (delta: -88.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:00,486 INFO L168 Benchmark]: RCFGBuilder took 428.35 ms. Allocated memory is still 203.9 MB. Free memory was 181.8 MB in the beginning and 165.3 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:00,487 INFO L168 Benchmark]: TraceAbstraction took 7858.97 ms. Allocated memory was 203.9 MB in the beginning and 281.0 MB in the end (delta: 77.1 MB). Free memory was 165.3 MB in the beginning and 108.5 MB in the end (delta: 56.8 MB). Peak memory consumption was 133.9 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:00,491 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 388.49 ms. Allocated memory is still 147.3 MB. Free memory was 103.3 MB in the beginning and 93.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.43 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 93.5 MB in the beginning and 181.8 MB in the end (delta: -88.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 428.35 ms. Allocated memory is still 203.9 MB. Free memory was 181.8 MB in the beginning and 165.3 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7858.97 ms. Allocated memory was 203.9 MB in the beginning and 281.0 MB in the end (delta: 77.1 MB). Free memory was 165.3 MB in the beginning and 108.5 MB in the end (delta: 56.8 MB). Peak memory consumption was 133.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant [2020-09-25 02:19:00,501 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 02:19:00,501 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 02:19:00,502 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 02:19:00,502 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((j + 1 <= SIZE && SIZE <= 1) && 0 < j / 4294967296 + 1) || (((SIZE <= j && SIZE <= 1) && ((1 <= SIZE && menor == unknown-#memory_int-unknown[array][array]) || (1 <= SIZE && menor + 1 <= unknown-#memory_int-unknown[array][array]))) && j / 4294967296 < SIZE / 4294967296 + 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.5s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 125 SDtfs, 123 SDslu, 381 SDs, 0 SdLazy, 410 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=3, 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, 4 MinimizatonAttempts, 26 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 111 HoareAnnotationTreeSize, 10 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 49 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 131 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 127 ConstructedInterpolants, 0 QuantifiedInterpolants, 21796 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 11/14 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 correct! Received shutdown request...