/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Fibonacci01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:16:43,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:16:43,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:16:43,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:16:43,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:16:43,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:16:43,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:16:43,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:16:43,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:16:43,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:16:43,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:16:43,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:16:43,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:16:43,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:16:43,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:16:43,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:16:43,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:16:43,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:16:43,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:16:43,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:16:43,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:16:43,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:16:43,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:16:43,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:16:43,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:16:43,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:16:43,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:16:43,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:16:43,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:16:43,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 13:16:43,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:16:43,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:16:43,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:16:43,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:16:43,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:16:43,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:16:43,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:16:43,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:16:43,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:16:43,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:16:43,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:16:43,358 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 [2020-08-21 13:16:43,394 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:16:43,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:16:43,396 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:16:43,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:16:43,396 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:16:43,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:16:43,397 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:16:43,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:16:43,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:16:43,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:16:43,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:16:43,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:16:43,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:16:43,399 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:16:43,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:16:43,400 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:16:43,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:16:43,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:16:43,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:16:43,401 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:16:43,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:16:43,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:16:43,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:16:43,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:16:43,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:16:43,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:16:43,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:16:43,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:16:43,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:16:43,403 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-21 13:16:43,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:16:43,749 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:16:43,754 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:16:43,757 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:16:43,757 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:16:43,758 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci01-1.c [2020-08-21 13:16:43,817 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/51f73baf7/123a7cf300b44c8e81b8333a2aca4d6f/FLAG0a6c3ba51 [2020-08-21 13:16:44,255 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:16:44,256 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Fibonacci01-1.c [2020-08-21 13:16:44,263 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/51f73baf7/123a7cf300b44c8e81b8333a2aca4d6f/FLAG0a6c3ba51 [2020-08-21 13:16:44,594 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/51f73baf7/123a7cf300b44c8e81b8333a2aca4d6f [2020-08-21 13:16:44,603 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:16:44,604 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:16:44,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:16:44,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:16:44,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:16:44,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:16:44" (1/1) ... [2020-08-21 13:16:44,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b821aed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:44, skipping insertion in model container [2020-08-21 13:16:44,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:16:44" (1/1) ... [2020-08-21 13:16:44,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:16:44,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:16:44,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:16:44,845 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:16:44,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:16:44,874 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:16:44,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:44 WrapperNode [2020-08-21 13:16:44,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:16:44,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:16:44,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:16:44,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:16:44,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:44" (1/1) ... [2020-08-21 13:16:44,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:44" (1/1) ... [2020-08-21 13:16:44,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:44" (1/1) ... [2020-08-21 13:16:44,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:44" (1/1) ... [2020-08-21 13:16:44,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:44" (1/1) ... [2020-08-21 13:16:44,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:44" (1/1) ... [2020-08-21 13:16:44,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:44" (1/1) ... [2020-08-21 13:16:44,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:16:44,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:16:44,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:16:44,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:16:44,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:44" (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 [2020-08-21 13:16:45,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:16:45,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:16:45,045 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-08-21 13:16:45,045 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:16:45,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:16:45,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 13:16:45,047 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-08-21 13:16:45,048 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:16:45,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:16:45,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:16:45,231 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:16:45,232 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 13:16:45,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:16:45 BoogieIcfgContainer [2020-08-21 13:16:45,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:16:45,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:16:45,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:16:45,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:16:45,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:16:44" (1/3) ... [2020-08-21 13:16:45,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f6be5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:16:45, skipping insertion in model container [2020-08-21 13:16:45,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:44" (2/3) ... [2020-08-21 13:16:45,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f6be5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:16:45, skipping insertion in model container [2020-08-21 13:16:45,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:16:45" (3/3) ... [2020-08-21 13:16:45,244 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci01-1.c [2020-08-21 13:16:45,255 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:16:45,263 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:16:45,279 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:16:45,331 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:16:45,331 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:16:45,331 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:16:45,332 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:16:45,332 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:16:45,332 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:16:45,332 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:16:45,332 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:16:45,370 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-08-21 13:16:45,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-21 13:16:45,378 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:16:45,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:16:45,381 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:16:45,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:16:45,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1900973920, now seen corresponding path program 1 times [2020-08-21 13:16:45,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:16:45,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599836297] [2020-08-21 13:16:45,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:16:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:45,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:16:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:45,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:16:45,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:45,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:16:45,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599836297] [2020-08-21 13:16:45,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:16:45,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 13:16:45,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322777006] [2020-08-21 13:16:45,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 13:16:45,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:16:45,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 13:16:45,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 13:16:45,685 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 6 states. [2020-08-21 13:16:45,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:16:45,837 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2020-08-21 13:16:45,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 13:16:45,840 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-08-21 13:16:45,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:16:45,851 INFO L225 Difference]: With dead ends: 36 [2020-08-21 13:16:45,851 INFO L226 Difference]: Without dead ends: 22 [2020-08-21 13:16:45,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 13:16:45,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-08-21 13:16:45,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-08-21 13:16:45,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-21 13:16:45,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-08-21 13:16:45,901 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 14 [2020-08-21 13:16:45,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:16:45,901 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-08-21 13:16:45,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 13:16:45,902 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-08-21 13:16:45,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-21 13:16:45,904 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:16:45,904 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:16:45,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:16:45,905 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:16:45,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:16:45,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1203666899, now seen corresponding path program 1 times [2020-08-21 13:16:45,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:16:45,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190644829] [2020-08-21 13:16:45,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:16:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:45,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:16:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:45,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:16:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:46,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 13:16:46,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:46,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:16:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:46,065 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 13:16:46,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190644829] [2020-08-21 13:16:46,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:16:46,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-21 13:16:46,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493814408] [2020-08-21 13:16:46,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 13:16:46,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:16:46,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 13:16:46,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 13:16:46,070 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 6 states. [2020-08-21 13:16:46,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:16:46,167 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2020-08-21 13:16:46,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 13:16:46,167 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-08-21 13:16:46,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:16:46,169 INFO L225 Difference]: With dead ends: 39 [2020-08-21 13:16:46,169 INFO L226 Difference]: Without dead ends: 24 [2020-08-21 13:16:46,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:16:46,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-08-21 13:16:46,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-08-21 13:16:46,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-08-21 13:16:46,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-08-21 13:16:46,179 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 27 [2020-08-21 13:16:46,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:16:46,180 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-08-21 13:16:46,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 13:16:46,180 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-08-21 13:16:46,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-21 13:16:46,182 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:16:46,182 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:16:46,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:16:46,182 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:16:46,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:16:46,183 INFO L82 PathProgramCache]: Analyzing trace with hash -603082491, now seen corresponding path program 1 times [2020-08-21 13:16:46,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:16:46,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513394491] [2020-08-21 13:16:46,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:16:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:46,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:16:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:46,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:16:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:46,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 13:16:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:46,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:16:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:46,365 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-21 13:16:46,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513394491] [2020-08-21 13:16:46,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:16:46,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 13:16:46,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78699798] [2020-08-21 13:16:46,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 13:16:46,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:16:46,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 13:16:46,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-21 13:16:46,369 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 10 states. [2020-08-21 13:16:46,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:16:46,575 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2020-08-21 13:16:46,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 13:16:46,576 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-08-21 13:16:46,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:16:46,578 INFO L225 Difference]: With dead ends: 34 [2020-08-21 13:16:46,578 INFO L226 Difference]: Without dead ends: 30 [2020-08-21 13:16:46,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-08-21 13:16:46,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-21 13:16:46,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-08-21 13:16:46,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-21 13:16:46,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2020-08-21 13:16:46,589 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 28 [2020-08-21 13:16:46,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:16:46,590 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2020-08-21 13:16:46,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 13:16:46,590 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2020-08-21 13:16:46,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-21 13:16:46,592 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:16:46,592 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:16:46,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 13:16:46,593 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:16:46,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:16:46,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1293014720, now seen corresponding path program 2 times [2020-08-21 13:16:46,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:16:46,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493351097] [2020-08-21 13:16:46,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:16:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:46,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:16:46,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:46,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:16:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:46,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 13:16:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:46,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:16:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:46,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 13:16:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:46,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:16:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:46,712 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-21 13:16:46,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493351097] [2020-08-21 13:16:46,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:16:46,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-21 13:16:46,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933138585] [2020-08-21 13:16:46,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 13:16:46,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:16:46,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 13:16:46,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 13:16:46,715 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand 6 states. [2020-08-21 13:16:46,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:16:46,835 INFO L93 Difference]: Finished difference Result 54 states and 78 transitions. [2020-08-21 13:16:46,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 13:16:46,836 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-08-21 13:16:46,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:16:46,837 INFO L225 Difference]: With dead ends: 54 [2020-08-21 13:16:46,838 INFO L226 Difference]: Without dead ends: 31 [2020-08-21 13:16:46,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-08-21 13:16:46,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-08-21 13:16:46,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-08-21 13:16:46,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-21 13:16:46,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2020-08-21 13:16:46,847 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 42 [2020-08-21 13:16:46,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:16:46,848 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2020-08-21 13:16:46,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 13:16:46,848 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2020-08-21 13:16:46,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-21 13:16:46,850 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:16:46,850 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:16:46,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 13:16:46,851 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:16:46,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:16:46,851 INFO L82 PathProgramCache]: Analyzing trace with hash -2046185202, now seen corresponding path program 3 times [2020-08-21 13:16:46,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:16:46,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957116722] [2020-08-21 13:16:46,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:16:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:46,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:16:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:46,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:16:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:46,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 13:16:46,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:46,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 13:16:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:46,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:16:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:46,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 13:16:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:46,973 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-21 13:16:46,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957116722] [2020-08-21 13:16:46,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:16:46,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 13:16:46,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832935010] [2020-08-21 13:16:46,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 13:16:46,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:16:46,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 13:16:46,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-21 13:16:46,976 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 7 states. [2020-08-21 13:16:47,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:16:47,077 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-08-21 13:16:47,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 13:16:47,079 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-08-21 13:16:47,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:16:47,080 INFO L225 Difference]: With dead ends: 55 [2020-08-21 13:16:47,080 INFO L226 Difference]: Without dead ends: 31 [2020-08-21 13:16:47,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-08-21 13:16:47,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-08-21 13:16:47,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-08-21 13:16:47,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-21 13:16:47,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-08-21 13:16:47,099 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 41 [2020-08-21 13:16:47,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:16:47,099 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-08-21 13:16:47,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 13:16:47,099 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-08-21 13:16:47,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-21 13:16:47,105 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:16:47,105 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:16:47,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 13:16:47,109 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:16:47,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:16:47,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1391487784, now seen corresponding path program 4 times [2020-08-21 13:16:47,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:16:47,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573878457] [2020-08-21 13:16:47,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:16:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:47,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:16:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:47,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:16:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:47,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 13:16:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:47,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 13:16:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:47,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:16:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:47,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 13:16:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:47,364 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-08-21 13:16:47,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573878457] [2020-08-21 13:16:47,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:16:47,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 13:16:47,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315915388] [2020-08-21 13:16:47,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 13:16:47,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:16:47,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 13:16:47,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:16:47,367 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 12 states. [2020-08-21 13:16:47,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:16:47,610 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2020-08-21 13:16:47,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 13:16:47,611 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2020-08-21 13:16:47,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:16:47,612 INFO L225 Difference]: With dead ends: 41 [2020-08-21 13:16:47,612 INFO L226 Difference]: Without dead ends: 37 [2020-08-21 13:16:47,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2020-08-21 13:16:47,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-21 13:16:47,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2020-08-21 13:16:47,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-21 13:16:47,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2020-08-21 13:16:47,622 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 42 [2020-08-21 13:16:47,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:16:47,622 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2020-08-21 13:16:47,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 13:16:47,622 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2020-08-21 13:16:47,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-21 13:16:47,624 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:16:47,624 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:16:47,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 13:16:47,625 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:16:47,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:16:47,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1554048393, now seen corresponding path program 5 times [2020-08-21 13:16:47,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:16:47,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610999754] [2020-08-21 13:16:47,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:16:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:47,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:16:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:47,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:16:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:47,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 13:16:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:47,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 13:16:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:47,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:16:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:47,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 13:16:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:47,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 13:16:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:47,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:16:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:47,757 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 33 proven. 35 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-21 13:16:47,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610999754] [2020-08-21 13:16:47,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:16:47,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 13:16:47,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586310467] [2020-08-21 13:16:47,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:16:47,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:16:47,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:16:47,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:16:47,760 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand 8 states. [2020-08-21 13:16:47,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:16:47,924 INFO L93 Difference]: Finished difference Result 70 states and 99 transitions. [2020-08-21 13:16:47,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 13:16:47,925 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2020-08-21 13:16:47,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:16:47,927 INFO L225 Difference]: With dead ends: 70 [2020-08-21 13:16:47,927 INFO L226 Difference]: Without dead ends: 44 [2020-08-21 13:16:47,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-08-21 13:16:47,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-21 13:16:47,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-08-21 13:16:47,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-21 13:16:47,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2020-08-21 13:16:47,937 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 55 [2020-08-21 13:16:47,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:16:47,937 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 53 transitions. [2020-08-21 13:16:47,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:16:47,937 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions. [2020-08-21 13:16:47,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 13:16:47,939 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:16:47,939 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:16:47,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 13:16:47,940 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:16:47,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:16:47,940 INFO L82 PathProgramCache]: Analyzing trace with hash -168777920, now seen corresponding path program 6 times [2020-08-21 13:16:47,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:16:47,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787561845] [2020-08-21 13:16:47,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:16:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:47,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:16:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:47,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:16:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:48,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 13:16:48,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:48,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 13:16:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:48,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 13:16:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:48,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:16:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:48,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 13:16:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:48,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:16:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:48,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 13:16:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:48,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 13:16:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:48,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 13:16:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:48,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:16:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:48,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 13:16:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:48,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:16:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:48,193 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 106 proven. 151 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2020-08-21 13:16:48,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787561845] [2020-08-21 13:16:48,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:16:48,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 13:16:48,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444853572] [2020-08-21 13:16:48,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 13:16:48,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:16:48,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 13:16:48,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 13:16:48,197 INFO L87 Difference]: Start difference. First operand 41 states and 53 transitions. Second operand 10 states. [2020-08-21 13:16:48,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:16:48,482 INFO L93 Difference]: Finished difference Result 92 states and 135 transitions. [2020-08-21 13:16:48,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 13:16:48,482 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 97 [2020-08-21 13:16:48,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:16:48,485 INFO L225 Difference]: With dead ends: 92 [2020-08-21 13:16:48,485 INFO L226 Difference]: Without dead ends: 58 [2020-08-21 13:16:48,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-08-21 13:16:48,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-21 13:16:48,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-08-21 13:16:48,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-21 13:16:48,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2020-08-21 13:16:48,498 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 97 [2020-08-21 13:16:48,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:16:48,498 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2020-08-21 13:16:48,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 13:16:48,498 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2020-08-21 13:16:48,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-21 13:16:48,500 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:16:48,500 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:16:48,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 13:16:48,500 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:16:48,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:16:48,501 INFO L82 PathProgramCache]: Analyzing trace with hash -865837754, now seen corresponding path program 7 times [2020-08-21 13:16:48,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:16:48,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649332582] [2020-08-21 13:16:48,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:16:48,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:48,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:16:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:48,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:16:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:48,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 13:16:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:48,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 13:16:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:48,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 13:16:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:48,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:16:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:48,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 13:16:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:48,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:16:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:48,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 13:16:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:48,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:16:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:48,757 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 8 proven. 98 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-08-21 13:16:48,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649332582] [2020-08-21 13:16:48,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:16:48,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 13:16:48,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099339094] [2020-08-21 13:16:48,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 13:16:48,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:16:48,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 13:16:48,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-08-21 13:16:48,764 INFO L87 Difference]: Start difference. First operand 52 states and 67 transitions. Second operand 14 states. [2020-08-21 13:16:48,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:16:48,974 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions. [2020-08-21 13:16:48,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 13:16:48,975 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 69 [2020-08-21 13:16:48,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:16:48,976 INFO L225 Difference]: With dead ends: 52 [2020-08-21 13:16:48,976 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 13:16:48,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2020-08-21 13:16:48,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 13:16:48,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 13:16:48,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 13:16:48,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 13:16:48,978 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2020-08-21 13:16:48,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:16:48,978 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 13:16:48,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 13:16:48,978 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 13:16:48,978 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 13:16:48,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 13:16:48,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 13:16:49,164 INFO L268 CegarLoopResult]: For program point fibonacciFINAL(lines 14 22) no Hoare annotation was computed. [2020-08-21 13:16:49,164 INFO L271 CegarLoopResult]: At program point fibonacciENTRY(lines 14 22) the Hoare annotation is: true [2020-08-21 13:16:49,165 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (= fibonacci_~n |fibonacci_#in~n|) (<= 2 |fibonacci_#in~n|)) [2020-08-21 13:16:49,165 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-08-21 13:16:49,165 INFO L264 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (let ((.cse0 (= fibonacci_~n |fibonacci_#in~n|))) (or (and (<= |fibonacci_#in~n| 2) (<= 1 |fibonacci_#t~ret0|) .cse0 (<= 2 |fibonacci_#in~n|)) (and (<= |fibonacci_#in~n| (+ |fibonacci_#t~ret0| 2)) .cse0 (<= 3 |fibonacci_#in~n|)))) [2020-08-21 13:16:49,165 INFO L268 CegarLoopResult]: For program point fibonacciEXIT(lines 14 22) no Hoare annotation was computed. [2020-08-21 13:16:49,165 INFO L268 CegarLoopResult]: For program point L17(lines 17 21) no Hoare annotation was computed. [2020-08-21 13:16:49,165 INFO L268 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-08-21 13:16:49,165 INFO L268 CegarLoopResult]: For program point L15(lines 15 21) no Hoare annotation was computed. [2020-08-21 13:16:49,166 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-21 13:16:49,166 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 13:16:49,166 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 13:16:49,166 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 13:16:49,166 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 13:16:49,166 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 13:16:49,166 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 34) no Hoare annotation was computed. [2020-08-21 13:16:49,166 INFO L268 CegarLoopResult]: For program point L31(lines 31 35) no Hoare annotation was computed. [2020-08-21 13:16:49,166 INFO L271 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: true [2020-08-21 13:16:49,166 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 25 36) the Hoare annotation is: true [2020-08-21 13:16:49,166 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-08-21 13:16:49,167 INFO L268 CegarLoopResult]: For program point L27(lines 27 29) no Hoare annotation was computed. [2020-08-21 13:16:49,167 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 25 36) no Hoare annotation was computed. [2020-08-21 13:16:49,167 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 25 36) no Hoare annotation was computed. [2020-08-21 13:16:49,167 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-08-21 13:16:49,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 01:16:49 BoogieIcfgContainer [2020-08-21 13:16:49,172 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 13:16:49,175 INFO L168 Benchmark]: Toolchain (without parser) took 4569.61 ms. Allocated memory was 140.5 MB in the beginning and 276.8 MB in the end (delta: 136.3 MB). Free memory was 104.1 MB in the beginning and 208.4 MB in the end (delta: -104.4 MB). Peak memory consumption was 31.9 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:49,176 INFO L168 Benchmark]: CDTParser took 0.17 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. [2020-08-21 13:16:49,177 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.36 ms. Allocated memory is still 140.5 MB. Free memory was 103.9 MB in the beginning and 94.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:49,177 INFO L168 Benchmark]: Boogie Preprocessor took 24.25 ms. Allocated memory is still 140.5 MB. Free memory was 94.5 MB in the beginning and 93.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:49,178 INFO L168 Benchmark]: RCFGBuilder took 336.49 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 93.1 MB in the beginning and 171.3 MB in the end (delta: -78.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:49,179 INFO L168 Benchmark]: TraceAbstraction took 3935.10 ms. Allocated memory was 203.4 MB in the beginning and 276.8 MB in the end (delta: 73.4 MB). Free memory was 170.6 MB in the beginning and 208.4 MB in the end (delta: -37.8 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:49,183 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 269.36 ms. Allocated memory is still 140.5 MB. Free memory was 103.9 MB in the beginning and 94.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.25 ms. Allocated memory is still 140.5 MB. Free memory was 94.5 MB in the beginning and 93.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 336.49 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 93.1 MB in the beginning and 171.3 MB in the end (delta: -78.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3935.10 ms. Allocated memory was 203.4 MB in the beginning and 276.8 MB in the end (delta: 73.4 MB). Free memory was 170.6 MB in the beginning and 208.4 MB in the end (delta: -37.8 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 34]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 9, TraceHistogramMax: 13, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 158 SDtfs, 139 SDslu, 543 SDs, 0 SdLazy, 728 SolverSat, 137 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 263 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=8, 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, 9 MinimizatonAttempts, 14 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 80 PreInvPairs, 99 NumberOfFragments, 39 HoareAnnotationTreeSize, 80 FomulaSimplifications, 291 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 215 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 415 NumberOfCodeBlocks, 415 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 406 ConstructedInterpolants, 0 QuantifiedInterpolants, 50421 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 550/894 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...